diff --git a/mmgen/autosign/__init__.py b/mmgen/autosign/__init__.py
index 3eed51b0..7fd872d8 100755
--- a/mmgen/autosign/__init__.py
+++ b/mmgen/autosign/__init__.py
@@ -18,440 +18,14 @@ from pathlib import Path
 from subprocess import run, PIPE, DEVNULL
 
 from ..cfg import Config
-from ..util import msg, msg_r, ymsg, rmsg, gmsg, bmsg, die, suf, fmt, fmt_list, is_int, have_sudo, capfirst
-from ..color import yellow, red, orange, brown, blue, gray
+from ..util import msg, msg_r, ymsg, rmsg, gmsg, bmsg, die, suf, fmt, fmt_list, is_int, cached_property
+from ..color import yellow, brown, gray
 from ..wallet import Wallet, get_wallet_cls
 from ..addrlist import AddrIdxList
 from ..filename import find_file_in_dir
 from ..fileutil import shred_file
 from ..ui import keypress_confirm
 
-def SwapMgr(*args, **kwargs):
-	match sys.platform:
-		case 'linux':
-			return SwapMgrLinux(*args, **kwargs)
-		case 'darwin':
-			return SwapMgrMacOS(*args, **kwargs)
-
-class SwapMgrBase:
-
-	def __init__(self, cfg, *, ignore_zram=False):
-		self.cfg = cfg
-		self.ignore_zram = ignore_zram
-		self.desc = 'disk swap' if ignore_zram else 'swap'
-
-	def enable(self, *, quiet=False):
-		ret = self.do_enable()
-		if not quiet:
-			self.cfg._util.qmsg(
-				f'{capfirst(self.desc)} successfully enabled' if ret else
-				f'{capfirst(self.desc)} is already enabled' if ret is None else
-				f'Could not enable {self.desc}')
-		return ret
-
-	def disable(self, *, quiet=False):
-		self.cfg._util.qmsg_r(f'Attempting to disable {self.desc}...')
-		ret = self.do_disable()
-		self.cfg._util.qmsg('success')
-		if not quiet:
-			self.cfg._util.qmsg(
-				f'{capfirst(self.desc)} successfully disabled ({fmt_list(ret, fmt="no_quotes")})'
-					if ret and isinstance(ret, list) else
-				f'{capfirst(self.desc)} successfully disabled' if ret else
-				f'No active {self.desc}')
-		return ret
-
-	def process_cmds(self, op, cmds):
-		if not cmds:
-			return
-		if have_sudo(silent=True) and not self.cfg.test_suite:
-			for cmd in cmds:
-				run(cmd.split(), check=True)
-		else:
-			pre = 'failure\n' if op == 'disable' else ''
-			fs = blue('{a} {b} manually by executing the following command{c}:\n{d}')
-			post = orange('[To prevent this message in the future, enable sudo without a password]')
-			m = pre + fs.format(
-				a = 'Please disable' if op == 'disable' else 'Enable',
-				b = self.desc,
-				c = suf(cmds),
-				d = fmt_list(cmds, indent='  ', fmt='col')) + '\n' + post
-			msg(m)
-			if not self.cfg.test_suite:
-				sys.exit(1)
-
-class SwapMgrLinux(SwapMgrBase):
-
-	def get_active(self):
-		for cmd in ('/sbin/swapon', 'swapon'):
-			try:
-				cp = run([cmd, '--show=NAME', '--noheadings'], stdout=PIPE, text=True, check=True)
-				break
-			except Exception:
-				if cmd == 'swapon':
-					raise
-		res = cp.stdout.splitlines()
-		return [e for e in res if not e.startswith('/dev/zram')] if self.ignore_zram else res
-
-	def do_enable(self):
-		if ret := self.get_active():
-			ymsg(f'Warning: {self.desc} is already enabled: ({fmt_list(ret, fmt="no_quotes")})')
-		self.process_cmds('enable', ['sudo swapon --all'])
-		return True
-
-	def do_disable(self):
-		swapdevs = self.get_active()
-		if not swapdevs:
-			return None
-		self.process_cmds('disable', [f'sudo swapoff {swapdev}' for swapdev in swapdevs])
-		return swapdevs
-
-class SwapMgrMacOS(SwapMgrBase):
-
-	def get_active(self):
-		cmd = 'launchctl print system/com.apple.dynamic_pager'
-		return run(cmd.split(), stdout=DEVNULL, stderr=DEVNULL).returncode == 0
-
-	def _do_action(self, active, op, cmd):
-		if self.get_active() is active:
-			return None
-		else:
-			cmd = f'sudo launchctl {cmd} -w /System/Library/LaunchDaemons/com.apple.dynamic_pager.plist'
-			self.process_cmds(op, [cmd])
-			return True
-
-	def do_enable(self):
-		return self._do_action(active=True, op='enable', cmd='load')
-
-	def do_disable(self):
-		return self._do_action(active=False, op='disable', cmd='unload')
-
-class Signable:
-
-	non_xmr_signables = (
-		'transaction',
-		'automount_transaction',
-		'message')
-
-	xmr_signables = (              # order is important!
-		'xmr_wallet_outputs_file', # import XMR wallet outputs BEFORE signing transactions
-		'xmr_transaction')
-
-	class base:
-
-		clean_all = False
-		multiple_ok = True
-		action_desc = 'signed'
-		fail_msg = 'failed to sign'
-
-		def __init__(self, parent):
-			self.parent = parent
-			self.cfg = parent.cfg
-			self.dir = getattr(parent, self.dir_name)
-			self.name = type(self).__name__
-
-		@property
-		def unsigned(self):
-			return self._unprocessed('_unsigned', self.rawext, self.sigext)
-
-		def _unprocessed(self, attrname, rawext, sigext):
-			if not hasattr(self, attrname):
-				dirlist = sorted(self.dir.iterdir())
-				names = {f.name for f in dirlist}
-				setattr(
-					self,
-					attrname,
-					tuple(f for f in dirlist
-						if f.name.endswith('.' + rawext)
-							and f.name[:-len(rawext)] + sigext not in names))
-			return getattr(self, attrname)
-
-		def print_bad_list(self, bad_files):
-			msg('\n{a}\n{b}'.format(
-				a = red(f'Failed {self.desc}s:'),
-				b = '  {}\n'.format('\n  '.join(
-					self.gen_bad_list(sorted(bad_files, key=lambda f: f.name))))))
-
-		def gen_bad_list(self, bad_files):
-			for f in bad_files:
-				yield red(f.name)
-
-	class transaction(base):
-		desc = 'non-automount transaction'
-		dir_name = 'tx_dir'
-		rawext = 'rawtx'
-		sigext = 'sigtx'
-		automount = False
-
-		async def sign(self, f):
-			from ..tx import UnsignedTX
-			tx1 = UnsignedTX(
-				cfg       = self.cfg,
-				filename  = f,
-				automount = self.automount)
-			if tx1.proto.coin == 'XMR':
-				ctx = Signable.xmr_compat_transaction(self.parent)
-				for k in ('desc', 'print_summary', 'print_bad_list'):
-					setattr(self, k, getattr(ctx, k))
-				return await ctx.sign(f, compat_call=True)
-			if tx1.proto.sign_mode == 'daemon':
-				from ..rpc import rpc_init
-				tx1.rpc = await rpc_init(self.cfg, tx1.proto, ignore_wallet=True)
-			from ..tx.keys import TxKeys
-			tx2 = await tx1.sign(
-				TxKeys(
-					self.cfg,
-					tx1,
-					seedfiles = self.parent.wallet_files[:],
-					keylist = self.parent.keylist,
-					passwdfile = str(self.parent.keyfile),
-					autosign = True).keys)
-			if tx2:
-				tx2.file.write(ask_write=False, outdir=self.dir)
-				return tx2
-			else:
-				return False
-
-		def print_summary(self, signables):
-
-			if self.cfg.full_summary:
-				bmsg('\nAutosign summary:\n')
-				msg_r('\n'.join(tx.info.format(terse=True) for tx in signables))
-				return
-
-			def gen():
-				for tx in signables:
-					non_mmgen = [o for o in tx.outputs if not o.mmid]
-					if non_mmgen:
-						yield (tx, non_mmgen)
-
-			body = list(gen())
-
-			if body:
-				bmsg('\nAutosign summary:')
-				fs = '{}  {} {}'
-				t_wid, a_wid = 6, 44
-
-				def gen():
-					yield fs.format('TX ID ', 'Non-MMGen outputs'+' '*(a_wid-17), 'Amount')
-					yield fs.format('-'*t_wid, '-'*a_wid, '-'*7)
-					for tx, non_mmgen in body:
-						for nm in non_mmgen:
-							yield fs.format(
-								tx.txid.fmt(t_wid, color=True) if nm is non_mmgen[0] else ' '*t_wid,
-								nm.addr.fmt(nm.addr.view_pref, a_wid, color=True),
-								nm.amt.hl() + ' ' + yellow(tx.coin))
-
-				msg('\n' + '\n'.join(gen()))
-			else:
-				msg('\nNo non-MMGen outputs')
-
-	class automount_transaction(transaction):
-		desc = 'automount transaction'
-		dir_name = 'txauto_dir'
-		rawext = 'arawtx'
-		sigext = 'asigtx'
-		subext = 'asubtx'
-		multiple_ok = False
-		automount = True
-
-		@property
-		def unsubmitted(self):
-			return self._unprocessed('_unsubmitted', self.sigext, self.subext)
-
-		@property
-		def unsubmitted_raw(self):
-			return self._unprocessed('_unsubmitted_raw', self.rawext, self.subext)
-
-		unsent = unsubmitted
-		unsent_raw = unsubmitted_raw
-
-		@property
-		def submitted(self):
-			return self._processed('_submitted', self.subext)
-
-		def _processed(self, attrname, ext):
-			if not hasattr(self, attrname):
-				setattr(self, attrname, tuple(f for f in sorted(self.dir.iterdir())
-					if f.name.endswith('.' + ext)))
-			return getattr(self, attrname)
-
-		def die_wrong_num_txs(self, tx_type, *, msg=None, desc=None, show_dir=False):
-			match len(getattr(self, tx_type)): # num_txs
-				case 0: subj, suf, pred = ('No', 's', 'present')
-				case 1: subj, suf, pred = ('One', '', 'already present')
-				case _: subj, suf, pred = ('More than one', '', 'already present')
-			die('AutosignTXError', '{m}{a} {b} transaction{c} {d} {e}!'.format(
-				m = msg + '\n' if msg else '',
-				a = subj,
-				b = desc or tx_type,
-				c = suf,
-				d = pred,
-				e = f'in ‘{getattr(self.parent, self.dir_name)}’'
-					if show_dir else 'on removable device'))
-
-		def check_create_ok(self):
-			if len(self.unsigned):
-				self.die_wrong_num_txs('unsigned', msg='Cannot create transaction')
-			if len(self.unsent):
-				die('AutosignTXError', 'Cannot create transaction: you have an unsent transaction')
-
-		def get_unsubmitted(self, tx_type='unsubmitted'):
-			if len(self.unsubmitted) == 1:
-				return self.unsubmitted[0]
-			else:
-				self.die_wrong_num_txs(tx_type)
-
-		def get_unsent(self):
-			return self.get_unsubmitted('unsent')
-
-		def get_submitted(self):
-			if len(self.submitted) == 0:
-				self.die_wrong_num_txs('submitted')
-			else:
-				return self.submitted
-
-		def get_abortable(self):
-			if len(self.unsent_raw) != 1:
-				self.die_wrong_num_txs('unsent_raw', desc='unsent')
-			if len(self.unsent) > 1:
-				self.die_wrong_num_txs('unsent')
-			if self.unsent:
-				if self.unsent[0].stem != self.unsent_raw[0].stem:
-					die(1, f'{self.unsent[0]}, {self.unsent_raw[0]}: file mismatch')
-			return self.unsent_raw + self.unsent
-
-		def shred_abortable(self):
-			files = self.get_abortable() # raises AutosignTXError if no unsent TXs available
-			keypress_confirm(
-				self.cfg,
-				'The following file{} will be securely deleted:\n{}\nOK?'.format(
-					suf(files),
-					fmt_list(map(str, files), fmt='col', indent='  ')),
-					do_exit = True)
-			for fn in files:
-				msg(f'Shredding file ‘{fn}’')
-				shred_file(self.cfg, fn, iterations=15)
-			sys.exit(0)
-
-		async def get_last_sent(self, *, tx_range):
-			return await self.get_last_created(
-				# compat fallback - ‘sent_timestamp’ attr is missing in some old TX files:
-				sort_key = lambda x: x.sent_timestamp or x.timestamp,
-				tx_range = tx_range)
-
-		async def get_last_created(self, *, tx_range, sort_key=lambda x: x.timestamp):
-			from ..tx import CompletedTX
-			fns = [f for f in self.dir.iterdir() if f.name.endswith(self.subext)]
-			files = sorted(
-				[await CompletedTX(cfg=self.cfg, filename=str(txfile), quiet_open=True)
-					for txfile in fns],
-				key = sort_key)
-			if files:
-				return files[len(files) - 1 - tx_range.last:len(files) - tx_range.first]
-			else:
-				die(1, 'No sent automount transactions!')
-
-	class xmr_signable: # mixin class
-		automount = True
-		summary_footer = ''
-
-		def need_daemon_restart(self, m, new_idx):
-			old_idx = self.parent.xmr_cur_wallet_idx
-			self.parent.xmr_cur_wallet_idx = new_idx
-			return old_idx != new_idx or m.wd.state != 'ready'
-
-		def print_summary(self, signables):
-			bmsg('\nAutosign summary:')
-			msg('\n'.join(s.get_info(indent='  ') for s in signables) + self.summary_footer)
-
-	class xmr_transaction(xmr_signable, automount_transaction):
-		desc = 'Monero non-compat transaction'
-		dir_name = 'xmr_tx_dir'
-		rawext = 'rawtx'
-		sigext = 'sigtx'
-		subext = 'subtx'
-
-		async def sign(self, f, compat_call=False):
-			from .. import xmrwallet
-			from ..xmrwallet.file.tx import MoneroMMGenTX
-			tx1 = MoneroMMGenTX.Completed(self.parent.xmrwallet_cfg, f)
-			m = xmrwallet.op(
-				'sign',
-				self.parent.xmrwallet_cfg,
-				infile  = str(self.parent.wallet_files[0]), # MMGen wallet file
-				wallets = str(tx1.src_wallet_idx),
-				compat_call = compat_call)
-			tx2 = await m.main(f, restart_daemon=self.need_daemon_restart(m, tx1.src_wallet_idx))
-			tx2.write(ask_write=False)
-			return tx2
-
-	class xmr_compat_transaction(xmr_transaction):
-		desc = 'Monero compat transaction'
-		dir_name = 'txauto_dir'
-		rawext = 'arawtx'
-		sigext = 'asigtx'
-		subext = 'asubtx'
-
-	class xmr_wallet_outputs_file(xmr_signable, base):
-		desc = 'Monero wallet outputs file'
-		dir_name = 'xmr_outputs_dir'
-		rawext = 'raw'
-		sigext = 'sig'
-		clean_all = True
-		summary_footer = '\n'
-
-		@property
-		def unsigned(self):
-			import json
-			return tuple(
-				f for f in super().unsigned
-					if not json.loads(f.read_text())['MoneroMMGenWalletOutputsFile']['data']['imported'])
-
-		async def sign(self, f):
-			from .. import xmrwallet
-			wallet_idx = xmrwallet.op_cls('wallet').get_idx_from_fn(f)
-			m = xmrwallet.op(
-				'import_outputs',
-				self.parent.xmrwallet_cfg,
-				infile  = str(self.parent.wallet_files[0]), # MMGen wallet file
-				wallets = str(wallet_idx))
-			obj = await m.main(f, wallet_idx, restart_daemon=self.need_daemon_restart(m, wallet_idx))
-			obj.write(quiet=not obj.data.sign)
-			self.action_desc = 'imported and signed' if obj.data.sign else 'imported'
-			return obj
-
-	class message(base):
-		desc = 'message file'
-		dir_name = 'msg_dir'
-		rawext = 'rawmsg.json'
-		sigext = 'sigmsg.json'
-		fail_msg = 'failed to sign or signed incompletely'
-
-		async def sign(self, f):
-			from ..msg import UnsignedMsg, SignedMsg
-			m = UnsignedMsg(self.cfg, infile=f)
-			await m.sign(wallet_files=self.parent.wallet_files[:], passwd_file=str(self.parent.keyfile))
-			m = SignedMsg(self.cfg, data=m.__dict__)
-			m.write_to_file(
-				outdir = self.dir.resolve(),
-				ask_overwrite = False)
-			if m.data.get('failed_sids'):
-				die(
-					'MsgFileFailedSID',
-					f'Failed Seed IDs: {fmt_list(m.data["failed_sids"], fmt="bare")}')
-			return m
-
-		def print_summary(self, signables):
-			gmsg('\nSigned message files:')
-			for message in signables:
-				gmsg('  ' + message.signed_filename)
-
-		def gen_bad_list(self, bad_files):
-			for f in bad_files:
-				sigfile = f.parent / (f.name[:-len(self.rawext)] + self.sigext)
-				yield orange(sigfile.name) if sigfile.exists() else red(f.name)
-
 class Autosign:
 
 	dev_label = 'MMGEN_TX'
@@ -490,6 +64,15 @@ class Autosign:
 		'xmr_tx_dir':      'xmr/tx',
 		'xmr_outputs_dir': 'xmr/outputs'}
 
+	non_xmr_signables = (
+		'transaction',
+		'automount_transaction',
+		'message')
+
+	xmr_signables = (              # order is important!
+		'xmr_wallet_outputs_file', # import XMR wallet outputs BEFORE signing transactions
+		'xmr_transaction')
+
 	have_xmr = False
 	xmr_only = False
 
@@ -575,20 +158,23 @@ class Autosign:
 
 		if not self.xmr_only:
 			self.dirs |= self.non_xmr_dirs
-			self.signables += Signable.non_xmr_signables
+			self.signables += self.non_xmr_signables
 
 		if self.have_xmr:
 			self.dirs |= self.xmr_dirs | (
 				{'txauto_dir': 'txauto'} if cfg.xmrwallet_compat and self.xmr_only else {})
 			self.signables = (
-				Signable.xmr_signables # xmr_wallet_outputs_file must be signed before XMR TXs
+				self.xmr_signables # xmr_wallet_outputs_file must be signed before XMR TXs
 				+ (('automount_transaction',) if cfg.xmrwallet_compat and self.xmr_only else ())
 				+ self.signables)      # self.signables could contain compat XMR TXs
 
 		for name, path in self.dirs.items():
 			setattr(self, name, self.mountpoint / path)
 
-		self.swap = SwapMgr(self.cfg, ignore_zram=True)
+	@cached_property
+	def swap(self):
+		from .swap_mgr import SwapMgr
+		return SwapMgr(self.cfg, ignore_zram=True)
 
 	async def check_daemons_running(self):
 		from ..protocol import init_proto
@@ -683,6 +269,7 @@ class Autosign:
 		return not fails
 
 	async def sign_all(self, target_name):
+		from .signable import Signable
 		target = getattr(Signable, target_name)(self)
 		if target.unsigned:
 			good = []
@@ -892,6 +479,7 @@ class Autosign:
 						if raw.is_file():
 							do_shred(raw)
 
+			from .signable import Signable
 			s = getattr(Signable, s_name)(self)
 
 			msg_r(f'Cleaning directory ‘{s.dir}’..')
diff --git a/mmgen/autosign/signable.py b/mmgen/autosign/signable.py
new file mode 100755
index 00000000..3c05bcc0
--- /dev/null
+++ b/mmgen/autosign/signable.py
@@ -0,0 +1,337 @@
+#!/usr/bin/env python3
+#
+# MMGen Wallet, a terminal-based cryptocurrency wallet
+# Copyright (C)2013-2026 The MMGen Project <mmgen@tuta.io>
+# Licensed under the GNU General Public License, Version 3:
+#   https://www.gnu.org/licenses
+# Public project repositories:
+#   https://github.com/mmgen/mmgen-wallet
+#   https://gitlab.com/mmgen/mmgen-wallet
+
+"""
+autosign.signable: Signable class for MMGen Wallet autosigning
+"""
+
+import sys
+
+from ..util import msg, msg_r, gmsg, bmsg, die, suf, fmt_list
+from ..color import yellow, red, orange
+from ..fileutil import shred_file
+from ..ui import keypress_confirm
+
+class Signable:
+
+	class base:
+
+		clean_all = False
+		multiple_ok = True
+		action_desc = 'signed'
+		fail_msg = 'failed to sign'
+
+		def __init__(self, parent):
+			self.parent = parent
+			self.cfg = parent.cfg
+			self.dir = getattr(parent, self.dir_name)
+			self.name = type(self).__name__
+
+		@property
+		def unsigned(self):
+			return self._unprocessed('_unsigned', self.rawext, self.sigext)
+
+		def _unprocessed(self, attrname, rawext, sigext):
+			if not hasattr(self, attrname):
+				dirlist = sorted(self.dir.iterdir())
+				names = {f.name for f in dirlist}
+				setattr(
+					self,
+					attrname,
+					tuple(f for f in dirlist
+						if f.name.endswith('.' + rawext)
+							and f.name[:-len(rawext)] + sigext not in names))
+			return getattr(self, attrname)
+
+		def print_bad_list(self, bad_files):
+			msg('\n{a}\n{b}'.format(
+				a = red(f'Failed {self.desc}s:'),
+				b = '  {}\n'.format('\n  '.join(
+					self.gen_bad_list(sorted(bad_files, key=lambda f: f.name))))))
+
+		def gen_bad_list(self, bad_files):
+			for f in bad_files:
+				yield red(f.name)
+
+	class transaction(base):
+		desc = 'non-automount transaction'
+		dir_name = 'tx_dir'
+		rawext = 'rawtx'
+		sigext = 'sigtx'
+		automount = False
+
+		async def sign(self, f):
+			from ..tx import UnsignedTX
+			tx1 = UnsignedTX(
+				cfg       = self.cfg,
+				filename  = f,
+				automount = self.automount)
+			if tx1.proto.coin == 'XMR':
+				ctx = Signable.xmr_compat_transaction(self.parent)
+				for k in ('desc', 'print_summary', 'print_bad_list'):
+					setattr(self, k, getattr(ctx, k))
+				return await ctx.sign(f, compat_call=True)
+			if tx1.proto.sign_mode == 'daemon':
+				from ..rpc import rpc_init
+				tx1.rpc = await rpc_init(self.cfg, tx1.proto, ignore_wallet=True)
+			from ..tx.keys import TxKeys
+			tx2 = await tx1.sign(
+				TxKeys(
+					self.cfg,
+					tx1,
+					seedfiles = self.parent.wallet_files[:],
+					keylist = self.parent.keylist,
+					passwdfile = str(self.parent.keyfile),
+					autosign = True).keys)
+			if tx2:
+				tx2.file.write(ask_write=False, outdir=self.dir)
+				return tx2
+			else:
+				return False
+
+		def print_summary(self, signables):
+
+			if self.cfg.full_summary:
+				bmsg('\nAutosign summary:\n')
+				msg_r('\n'.join(tx.info.format(terse=True) for tx in signables))
+				return
+
+			def gen():
+				for tx in signables:
+					non_mmgen = [o for o in tx.outputs if not o.mmid]
+					if non_mmgen:
+						yield (tx, non_mmgen)
+
+			body = list(gen())
+
+			if body:
+				bmsg('\nAutosign summary:')
+				fs = '{}  {} {}'
+				t_wid, a_wid = 6, 44
+
+				def gen():
+					yield fs.format('TX ID ', 'Non-MMGen outputs'+' '*(a_wid-17), 'Amount')
+					yield fs.format('-'*t_wid, '-'*a_wid, '-'*7)
+					for tx, non_mmgen in body:
+						for nm in non_mmgen:
+							yield fs.format(
+								tx.txid.fmt(t_wid, color=True) if nm is non_mmgen[0] else ' '*t_wid,
+								nm.addr.fmt(nm.addr.view_pref, a_wid, color=True),
+								nm.amt.hl() + ' ' + yellow(tx.coin))
+
+				msg('\n' + '\n'.join(gen()))
+			else:
+				msg('\nNo non-MMGen outputs')
+
+	class automount_transaction(transaction):
+		desc = 'automount transaction'
+		dir_name = 'txauto_dir'
+		rawext = 'arawtx'
+		sigext = 'asigtx'
+		subext = 'asubtx'
+		multiple_ok = False
+		automount = True
+
+		@property
+		def unsubmitted(self):
+			return self._unprocessed('_unsubmitted', self.sigext, self.subext)
+
+		@property
+		def unsubmitted_raw(self):
+			return self._unprocessed('_unsubmitted_raw', self.rawext, self.subext)
+
+		unsent = unsubmitted
+		unsent_raw = unsubmitted_raw
+
+		@property
+		def submitted(self):
+			return self._processed('_submitted', self.subext)
+
+		def _processed(self, attrname, ext):
+			if not hasattr(self, attrname):
+				setattr(self, attrname, tuple(f for f in sorted(self.dir.iterdir())
+					if f.name.endswith('.' + ext)))
+			return getattr(self, attrname)
+
+		def die_wrong_num_txs(self, tx_type, *, msg=None, desc=None, show_dir=False):
+			match len(getattr(self, tx_type)): # num_txs
+				case 0: subj, suf, pred = ('No', 's', 'present')
+				case 1: subj, suf, pred = ('One', '', 'already present')
+				case _: subj, suf, pred = ('More than one', '', 'already present')
+			die('AutosignTXError', '{m}{a} {b} transaction{c} {d} {e}!'.format(
+				m = msg + '\n' if msg else '',
+				a = subj,
+				b = desc or tx_type,
+				c = suf,
+				d = pred,
+				e = f'in ‘{getattr(self.parent, self.dir_name)}’'
+					if show_dir else 'on removable device'))
+
+		def check_create_ok(self):
+			if len(self.unsigned):
+				self.die_wrong_num_txs('unsigned', msg='Cannot create transaction')
+			if len(self.unsent):
+				die('AutosignTXError', 'Cannot create transaction: you have an unsent transaction')
+
+		def get_unsubmitted(self, tx_type='unsubmitted'):
+			if len(self.unsubmitted) == 1:
+				return self.unsubmitted[0]
+			else:
+				self.die_wrong_num_txs(tx_type)
+
+		def get_unsent(self):
+			return self.get_unsubmitted('unsent')
+
+		def get_submitted(self):
+			if len(self.submitted) == 0:
+				self.die_wrong_num_txs('submitted')
+			else:
+				return self.submitted
+
+		def get_abortable(self):
+			if len(self.unsent_raw) != 1:
+				self.die_wrong_num_txs('unsent_raw', desc='unsent')
+			if len(self.unsent) > 1:
+				self.die_wrong_num_txs('unsent')
+			if self.unsent:
+				if self.unsent[0].stem != self.unsent_raw[0].stem:
+					die(1, f'{self.unsent[0]}, {self.unsent_raw[0]}: file mismatch')
+			return self.unsent_raw + self.unsent
+
+		def shred_abortable(self):
+			files = self.get_abortable() # raises AutosignTXError if no unsent TXs available
+			keypress_confirm(
+				self.cfg,
+				'The following file{} will be securely deleted:\n{}\nOK?'.format(
+					suf(files),
+					fmt_list(map(str, files), fmt='col', indent='  ')),
+					do_exit = True)
+			for fn in files:
+				msg(f'Shredding file ‘{fn}’')
+				shred_file(self.cfg, fn, iterations=15)
+			sys.exit(0)
+
+		async def get_last_sent(self, *, tx_range):
+			return await self.get_last_created(
+				# compat fallback - ‘sent_timestamp’ attr is missing in some old TX files:
+				sort_key = lambda x: x.sent_timestamp or x.timestamp,
+				tx_range = tx_range)
+
+		async def get_last_created(self, *, tx_range, sort_key=lambda x: x.timestamp):
+			from ..tx import CompletedTX
+			fns = [f for f in self.dir.iterdir() if f.name.endswith(self.subext)]
+			files = sorted(
+				[await CompletedTX(cfg=self.cfg, filename=str(txfile), quiet_open=True)
+					for txfile in fns],
+				key = sort_key)
+			if files:
+				return files[len(files) - 1 - tx_range.last:len(files) - tx_range.first]
+			else:
+				die(1, 'No sent automount transactions!')
+
+	class xmr_signable: # mixin class
+		automount = True
+		summary_footer = ''
+
+		def need_daemon_restart(self, m, new_idx):
+			old_idx = self.parent.xmr_cur_wallet_idx
+			self.parent.xmr_cur_wallet_idx = new_idx
+			return old_idx != new_idx or m.wd.state != 'ready'
+
+		def print_summary(self, signables):
+			bmsg('\nAutosign summary:')
+			msg('\n'.join(s.get_info(indent='  ') for s in signables) + self.summary_footer)
+
+	class xmr_transaction(xmr_signable, automount_transaction):
+		desc = 'Monero non-compat transaction'
+		dir_name = 'xmr_tx_dir'
+		rawext = 'rawtx'
+		sigext = 'sigtx'
+		subext = 'subtx'
+
+		async def sign(self, f, compat_call=False):
+			from .. import xmrwallet
+			from ..xmrwallet.file.tx import MoneroMMGenTX
+			tx1 = MoneroMMGenTX.Completed(self.parent.xmrwallet_cfg, f)
+			m = xmrwallet.op(
+				'sign',
+				self.parent.xmrwallet_cfg,
+				infile  = str(self.parent.wallet_files[0]), # MMGen wallet file
+				wallets = str(tx1.src_wallet_idx),
+				compat_call = compat_call)
+			tx2 = await m.main(f, restart_daemon=self.need_daemon_restart(m, tx1.src_wallet_idx))
+			tx2.write(ask_write=False)
+			return tx2
+
+	class xmr_compat_transaction(xmr_transaction):
+		desc = 'Monero compat transaction'
+		dir_name = 'txauto_dir'
+		rawext = 'arawtx'
+		sigext = 'asigtx'
+		subext = 'asubtx'
+
+	class xmr_wallet_outputs_file(xmr_signable, base):
+		desc = 'Monero wallet outputs file'
+		dir_name = 'xmr_outputs_dir'
+		rawext = 'raw'
+		sigext = 'sig'
+		clean_all = True
+		summary_footer = '\n'
+
+		@property
+		def unsigned(self):
+			import json
+			return tuple(
+				f for f in super().unsigned
+					if not json.loads(f.read_text())['MoneroMMGenWalletOutputsFile']['data']['imported'])
+
+		async def sign(self, f):
+			from .. import xmrwallet
+			wallet_idx = xmrwallet.op_cls('wallet').get_idx_from_fn(f)
+			m = xmrwallet.op(
+				'import_outputs',
+				self.parent.xmrwallet_cfg,
+				infile  = str(self.parent.wallet_files[0]), # MMGen wallet file
+				wallets = str(wallet_idx))
+			obj = await m.main(f, wallet_idx, restart_daemon=self.need_daemon_restart(m, wallet_idx))
+			obj.write(quiet=not obj.data.sign)
+			self.action_desc = 'imported and signed' if obj.data.sign else 'imported'
+			return obj
+
+	class message(base):
+		desc = 'message file'
+		dir_name = 'msg_dir'
+		rawext = 'rawmsg.json'
+		sigext = 'sigmsg.json'
+		fail_msg = 'failed to sign or signed incompletely'
+
+		async def sign(self, f):
+			from ..msg import UnsignedMsg, SignedMsg
+			m = UnsignedMsg(self.cfg, infile=f)
+			await m.sign(wallet_files=self.parent.wallet_files[:], passwd_file=str(self.parent.keyfile))
+			m = SignedMsg(self.cfg, data=m.__dict__)
+			m.write_to_file(
+				outdir = self.dir.resolve(),
+				ask_overwrite = False)
+			if m.data.get('failed_sids'):
+				die(
+					'MsgFileFailedSID',
+					f'Failed Seed IDs: {fmt_list(m.data["failed_sids"], fmt="bare")}')
+			return m
+
+		def print_summary(self, signables):
+			gmsg('\nSigned message files:')
+			for message in signables:
+				gmsg('  ' + message.signed_filename)
+
+		def gen_bad_list(self, bad_files):
+			for f in bad_files:
+				sigfile = f.parent / (f.name[:-len(self.rawext)] + self.sigext)
+				yield orange(sigfile.name) if sigfile.exists() else red(f.name)
diff --git a/mmgen/autosign/swap_mgr.py b/mmgen/autosign/swap_mgr.py
new file mode 100755
index 00000000..cfc0fde1
--- /dev/null
+++ b/mmgen/autosign/swap_mgr.py
@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+#
+# MMGen Wallet, a terminal-based cryptocurrency wallet
+# Copyright (C)2013-2026 The MMGen Project <mmgen@tuta.io>
+# Licensed under the GNU General Public License, Version 3:
+#   https://www.gnu.org/licenses
+# Public project repositories:
+#   https://github.com/mmgen/mmgen-wallet
+#   https://gitlab.com/mmgen/mmgen-wallet
+
+"""
+autosign.swap_mgr: swap management for MMGen Wallet autosigning
+"""
+
+import sys
+from subprocess import run, PIPE, DEVNULL
+
+from ..util import msg, ymsg, suf, fmt_list, have_sudo, capfirst
+from ..color import orange, blue
+
+def SwapMgr(*args, **kwargs):
+	match sys.platform:
+		case 'linux':
+			return SwapMgrLinux(*args, **kwargs)
+		case 'darwin':
+			return SwapMgrMacOS(*args, **kwargs)
+
+class SwapMgrBase:
+
+	def __init__(self, cfg, *, ignore_zram=False):
+		self.cfg = cfg
+		self.ignore_zram = ignore_zram
+		self.desc = 'disk swap' if ignore_zram else 'swap'
+
+	def enable(self, *, quiet=False):
+		ret = self.do_enable()
+		if not quiet:
+			self.cfg._util.qmsg(
+				f'{capfirst(self.desc)} successfully enabled' if ret else
+				f'{capfirst(self.desc)} is already enabled' if ret is None else
+				f'Could not enable {self.desc}')
+		return ret
+
+	def disable(self, *, quiet=False):
+		self.cfg._util.qmsg_r(f'Attempting to disable {self.desc}...')
+		ret = self.do_disable()
+		self.cfg._util.qmsg('success')
+		if not quiet:
+			self.cfg._util.qmsg(
+				f'{capfirst(self.desc)} successfully disabled ({fmt_list(ret, fmt="no_quotes")})'
+					if ret and isinstance(ret, list) else
+				f'{capfirst(self.desc)} successfully disabled' if ret else
+				f'No active {self.desc}')
+		return ret
+
+	def process_cmds(self, op, cmds):
+		if not cmds:
+			return
+		if have_sudo(silent=True) and not self.cfg.test_suite:
+			for cmd in cmds:
+				run(cmd.split(), check=True)
+		else:
+			pre = 'failure\n' if op == 'disable' else ''
+			fs = blue('{a} {b} manually by executing the following command{c}:\n{d}')
+			post = orange('[To prevent this message in the future, enable sudo without a password]')
+			m = pre + fs.format(
+				a = 'Please disable' if op == 'disable' else 'Enable',
+				b = self.desc,
+				c = suf(cmds),
+				d = fmt_list(cmds, indent='  ', fmt='col')) + '\n' + post
+			msg(m)
+			if not self.cfg.test_suite:
+				sys.exit(1)
+
+class SwapMgrLinux(SwapMgrBase):
+
+	def get_active(self):
+		for cmd in ('/sbin/swapon', 'swapon'):
+			try:
+				cp = run([cmd, '--show=NAME', '--noheadings'], stdout=PIPE, text=True, check=True)
+				break
+			except Exception:
+				if cmd == 'swapon':
+					raise
+		res = cp.stdout.splitlines()
+		return [e for e in res if not e.startswith('/dev/zram')] if self.ignore_zram else res
+
+	def do_enable(self):
+		if ret := self.get_active():
+			ymsg(f'Warning: {self.desc} is already enabled: ({fmt_list(ret, fmt="no_quotes")})')
+		self.process_cmds('enable', ['sudo swapon --all'])
+		return True
+
+	def do_disable(self):
+		swapdevs = self.get_active()
+		if not swapdevs:
+			return None
+		self.process_cmds('disable', [f'sudo swapoff {swapdev}' for swapdev in swapdevs])
+		return swapdevs
+
+class SwapMgrMacOS(SwapMgrBase):
+
+	def get_active(self):
+		cmd = 'launchctl print system/com.apple.dynamic_pager'
+		return run(cmd.split(), stdout=DEVNULL, stderr=DEVNULL).returncode == 0
+
+	def _do_action(self, active, op, cmd):
+		if self.get_active() is active:
+			return None
+		else:
+			cmd = f'sudo launchctl {cmd} -w /System/Library/LaunchDaemons/com.apple.dynamic_pager.plist'
+			self.process_cmds(op, [cmd])
+			return True
+
+	def do_enable(self):
+		return self._do_action(active=True, op='enable', cmd='load')
+
+	def do_disable(self):
+		return self._do_action(active=False, op='disable', cmd='unload')
diff --git a/mmgen/main_txbump.py b/mmgen/main_txbump.py
index 2b0ce7d6..3bdaced9 100755
--- a/mmgen/main_txbump.py
+++ b/mmgen/main_txbump.py
@@ -168,7 +168,7 @@ async def main():
 
 	if cfg.autosign:
 		from .tx.util import mount_removable_device
-		from .autosign import Signable
+		from .autosign.signable import Signable
 		asi = mount_removable_device(cfg)
 		si = Signable.automount_transaction(asi)
 		if si.unsigned or si.unsent:
diff --git a/mmgen/main_txcreate.py b/mmgen/main_txcreate.py
index aa00f968..21e4e167 100755
--- a/mmgen/main_txcreate.py
+++ b/mmgen/main_txcreate.py
@@ -138,7 +138,7 @@ async def main():
 
 	if cfg.autosign:
 		from .tx.util import mount_removable_device
-		from .autosign import Signable
+		from .autosign.signable import Signable
 		asi = mount_removable_device(cfg, add_cfg={'xmrwallet_compat': True})
 		Signable.automount_transaction(asi).check_create_ok()
 
diff --git a/mmgen/main_txsend.py b/mmgen/main_txsend.py
index 791b742b..2df93583 100755
--- a/mmgen/main_txsend.py
+++ b/mmgen/main_txsend.py
@@ -109,7 +109,7 @@ def init_autosign(arg):
 	global asi, si, infile, tx_range
 	from .tx.util import mount_removable_device
 	from .tx.online import SentTXRange
-	from .autosign import Signable
+	from .autosign.signable import Signable
 	asi = mount_removable_device(cfg)
 	si = Signable.automount_transaction(asi)
 	if cfg.abort:
diff --git a/mmgen/xmrwallet/ops/submit.py b/mmgen/xmrwallet/ops/submit.py
index e1d0c657..6bfe9501 100755
--- a/mmgen/xmrwallet/ops/submit.py
+++ b/mmgen/xmrwallet/ops/submit.py
@@ -42,7 +42,7 @@ class OpSubmit(OpWallet):
 		if self.uargs.infile:
 			fn = Path(self.uargs.infile)
 		else:
-			from ...autosign import Signable
+			from ...autosign.signable import Signable
 			fn = Signable.xmr_transaction(self.asi).get_unsubmitted()
 		return self.get_tx_cls('ColdSigned')(cfg=self.cfg, fn=fn)
 
@@ -115,7 +115,7 @@ class OpResubmit(OpSubmit):
 			die(1, '--autosign is required for this operation')
 
 	def get_tx(self):
-		from ...autosign import Signable
+		from ...autosign.signable import Signable
 		fns = Signable.xmr_transaction(self.asi).get_submitted()
 		cls = self.get_tx_cls('Submitted')
 		return sorted((cls(self.cfg, Path(fn)) for fn in fns),
@@ -127,5 +127,5 @@ class OpAbort(OpBase):
 	def __init__(self, cfg, uarg_tuple):
 		super().__init__(cfg, uarg_tuple)
 		self.mount_removable_device()
-		from ...autosign import Signable
+		from ...autosign.signable import Signable
 		Signable.xmr_transaction(self.asi).shred_abortable() # prompts user, then raises exception or exits
diff --git a/test/cmdtest_d/autosign.py b/test/cmdtest_d/autosign.py
index 8519c5ac..df3354b5 100755
--- a/test/cmdtest_d/autosign.py
+++ b/test/cmdtest_d/autosign.py
@@ -28,7 +28,8 @@ from mmgen.cfg import Config
 from mmgen.color import red, blue, yellow, cyan, orange, purple, gray
 from mmgen.util import msg, suf, die, indent, fmt
 from mmgen.led import LEDControl
-from mmgen.autosign import Autosign, Signable
+from mmgen.autosign import Autosign
+from mmgen.autosign.signable import Signable
 
 from ..include.common import (
 	omsg,
@@ -998,11 +999,11 @@ class CmdTestAutosign(CmdTestAutosignBase):
 		res = t.read()
 		self.remove_device()
 		for signable_list in present:
-			for signable_clsname in getattr(Signable, signable_list):
+			for signable_clsname in getattr(Autosign, signable_list):
 				desc = getattr(Signable, signable_clsname).desc
 				assert f'No unsigned {desc}s' in res, f'‘No unsigned {desc}s’ missing in output'
 		for signable_list in absent:
-			for signable_clsname in getattr(Signable, signable_list):
+			for signable_clsname in getattr(Autosign, signable_list):
 				desc = getattr(Signable, signable_clsname).desc
 				assert not f'No unsigned {desc}s' in res, f'‘No unsigned {desc}s’ should be absent in output'
 		return t