Provide for only showing folders that are subscribed on the server
(IMAP only)
Also:
Change default for Notification behavior to the old way. Make going
to the search for unread messages off by default.
Fix up some hiding of labels, etc. on the incoming server settings.
Check for message suppression in search results.
Fixes Issue 1664
Issue 1643: Some servers respond with an untagged EXISTS to every
NOOP. This change parses through all untagged responses in a loop
until no more are being generated, avoiding calling internalOpen each
time.
Issue 1664: I have never personally seen this error, and the log looks
like a thread safety problem. mMessageCount is being set in one
thread (the IDLE thread) but not properly visible in another thread
(the check mail thread). mMessageCount and other ImapFolder private
variables are now volatile in hopes of correcting this problem.
Enhance K-9 Mail to be more tolerant of non-compliant IMAP servers.
Do not require a space following the + in command continuation
requests. The rest of the token parser will swalow the space if it is
actually there but we don't really need it.
delimeter, but only if the server does not support NAMESPACE. Since
we've encountered non-compliant servers that freak out at the LIST
command, enclose in a try/catch structure so that failures do not
totally prevent IMAP communication.
- Created "controller" and "mail.filter" package
- Moved a lot of classes to new/other packages
- Removed unused classes: NoSuchProviderException, MessageDateComparator
Simplify WakeLocks use by pushing.
Correct fault in IMAP IDLE WakeLock usage. The ThreadLocal in
MessagingControllerPushReceiver meant that the WakeLock acquired when
the DONE was sent was not being released when entering back into IDLE
state.
Consolidate the account notification so that all Activities use the
methods in MessagingController.
Utilize cketti's AutoSyncHelper in order to provide a way to make K-9
Mail obey the global Auto-sync setting. K-9 Mail doesn't obey the
Auto-sync setting by default because K-9 Mail isn't listed as one of
the listed applications.
Fixes Issue 1577
Issue 1551:
Some IMAP servers send untagged EXPUNGEs to IDLEing
clients without ever haven't sent an untagged FETCH. The untagged
EXPUNGEs are harder to deal with because they don't have a UID. So,
if the user has elected to have the IDLE connection start with a poll,
we can maintain a map of message sequence numbers to UIDs that we can
use to figure out which message to delete. To mitigate the risk of
the map falling out of date, we do a UID SEARCH UID before removing
the local copy of the message, just to make sure the message is really
gone from the server. If we detect an error, do another poll to
resync the map.
Issue 1577:
Restore the removal of notifications for an account when the account's
unread message count goes to 0.
Fixes Issue 1562
Issue 1474:
Provide new facility to totally wipe all data for an account but leave
settings intact. This is useful because sometimes storage is so full
that SQLite cannot perform the usual VACUUM or message deletion.
Add confirmation dialogs to destructive Clear and Recreate operations.
Remove destructive Clear from FolderList so as not to have to
duplicate the confirmation dialogs.
Issue 1562:
Suppress notifications when new messages arrive in Trash, Sent or
Drafts special folders.
Fixes Issue 772
Fixes Issue 852
Issue 300: Handle incoming IMAP tokens in a case-insensitive manner
Issue 772: Add Yahoo workaround
Issue 852: Add configurable IMAP IDLE refresh frequency in Incoming
server settings
Also:
Add configuration option for whether push system executes a poll on
each connect.
Move the configuration for the maximum number of push folders to the
Incoming server Settings.
Fixes Issue 1105
Fixes Issue 1395
Fixes Issue 1421
Fixes Issue 1426
When the remote store is incapable of returning an unread message count (POP)
or a flagged message count (POP, WebDAV), count the number of local
messages with the desired atributes.
Keep search results in sync with newly arrived or deleted messages.
Intentionally does not remove messages from search results due to
flag (flagged/starred or read/unread) state changes, because that
would be awkward while manipulating messages in search results.
When connected to a server that does not automatically send an
untagged UIDNEXT with the responses to SELECT, explicitly SEARCH for
the currently highest UID in the folder on the server and then add 1
to it to get the UIDNEXT.
searchable folders, and the various search strategies.
Integration takes precedence over searchability. The Integrated Inbox
doesn't care about folder searchability. Nor does an unread or flag
search on specific folders.
Searches on specific accounts always go for displayable folders. That
might need to change so that searches on specific accounts can be on
DISPLAYABLE or ALL, but never NEVER. But in the current approach,
account-specific searches are done from the Accounts Activity, which
has an unread counter based on displayable non-special folders, so the
present implementation is the most logical for now.
interfering with "unread" searches on POP3 accounts.
Flags really should be normalized in the database to eliminate the use
of LIKE while searching by Flags.
Pass around simple Serializable MessageReference objects containing
account UUID, folder name and message UID so that MessageView can
traverse lists of messages which span folders and accounts.
Fixes ClassCastException.
Also:
Envelope and star in Accounts Activity are now both "hot". Tapping
the main part of the search opens the full search; tapping the
envelope opens the search only for unread messages; tapping the star
opens the search but only for starred messages.
The envelope and star are a bit small to reliably tap. Both options
should be available via long-press, also.
Methodology will be extended to real accounts, as well.
Fixes Issue 1431
Present flagged message count inside a star, matching the visual
presentation on individual messages.
Provide display of unread and flagged message counts for canned
searches.
Perhaps the message counts for searches and account size display
should be defeatable for improved speed.
Computing the account size is pretty slow for big accounts, and making
this functionality optional should be considered.
Also, displays the number of flagged messages ("stars") in each
account in the Accounts list and each folder in the FolderList. Needs
better presentation of the flagged message counts, but this works as a
proof-of-concept and gets the data structures built.
Look for + as acknowledgement that we're in IDLE mode, not "idling"
string.
Also, to help with battery life:
1) Give up trying to IDLE after 10 failures.
2) Increase retry delays
Not done, yet, but available for developers to use.
Definite things to be done in the short term:
1) Allow user to hide canned searches in Accounts Activity
2) Make newly arrived mail immediately appear in search results.
Possible improvements:
3) User-definable searches
4) Make newly deleted mail immediately disappear search results.
5) Make message with flag changes immediately appear/disappear from
search results.
6) Show search result size in Accounts Activity.
Fixes Issue 1126
Apply skisters2's patch for the POP notifications. Also, add another
setRingNotified at the beginning of each poll to make sure the account
is in the right state.
Allow user to turn off gesture-based control.
Also, consolidate so that gestures could be used by other subclasses
of K9Activity. Probably should be made usable to K9ListActivity, too,
by making MyGestureDetector its own class and make it used by
K9Activity and K9ListActivity, and have the Activities implement a
callback interface for onNext and onPrevious.
Provides for the user to elect to have certain folders displayed first
in the FolderList. Folders so elected are displayed in alphabetical
order first, then folders not so elected are displayed alphabetical
order.
No special handling is done for Inbox any more, except that it is in
"top group" by default, to preserve current behavior until the user
changes the settings.
Implement DEFLATE compression for IMAP communication, enabled by
default. User can disable compression for Wi-Fi, Mobile, or Other
networks, if it causes problems or if uncompressed communication is
faster, which is possible on Wi-Fi and wired networks, especially.
"Other" is to allow for the Android platform to introduce new
networking types without having to immediately change K-9 Mail.
However, as those arise, new network types should be added as explicit
types in K-9 Mail.
Fixes Issue 1278
Fixes Issue 119
Fixes Issue 1077
Fixes Issue 1238
Worked performed by danapple0 and cketti in
https://k9mail.googlecode.com/svn/k9mail/branches/issue1116
Add support for most batch ops (except move and copy) in search
results. Add support for batch move and copy on real folders.
Increase efficiency of bulk IMAP moves and copies by doing as multiple
UID operations.
Eliminated serialization of Account objects.
Provide up-references in useful places to make all future code cleaner
and more efficient.
Fixed a bunch of draft handling
Merged from issue1116 branch, except for Account.java, which was
copied wholesale. Account.java was manually merged in issue1116
branch at r1489
svn merge -r 1459:1489 https://k9mail.googlecode.com/svn/k9mail/branches/issue1116 .
cp ../issue1116/src/com/fsck/k9/Account.java src/com/fsck/k9/Account.java
As a side effect of this fix sending mail could be slightly faster now due to less packets being sent.
Big thanks to Kevin Newland of Michigan Technological University for organizing a test account.
Fixes issue 799
Handle CAPABILITY response in following cases:
1) When sent as part of the banner, no longer sends explicit
CAPABILITY command
2) When sent as an UNTAGGED response to LOGIN, updates stored
capabilities.
3) When sent as part of the TAGGED response to LOGIN, updates stored
capabilities.
Due to odd implementation of the CRAM-MD5 authentication, the
capability updates will not happen as part of the CRAM-MD5
authentication.
a) is already known if the server supports the NAMESPACE capability.
b) is included in the prefix anyway (=also known if namespace was set manually).
c) isn't needed when selecting a mailbox because we currently don't support folder hierarchy. So the delimeter is included in the folder name.
Fixes issue 1217
At cketti's suggestion, change the methodology for counting
server-side unread messages on an IMAP server from STATUS (UNSEEN) to
SEARCH UNSEEN NOT DELETED. STATUS (UNSEEN) does not ignore DELETED
but unexpunged messages and leads to incorrect results.
http://www.mail-archive.com/c-client@u.washington.edu/msg00929.htmlhttp://www.mail-archive.com/c-client@u.washington.edu/msg00931.html
This variant only checks for unread messages in the last 300 messages
in the folder, so will be wrong if there are unread messages earlier
in the folder. However, it'll be more often correct than the old
version for the marjority of users.
Also, change the opening of folders for IMAP IDLE purposes to
read-only using EXAMINE instead of SELECT.
of the last successful periodic mail and computes the next start time
as an offset from that successful finish. The ramifications of this
new method is that changing polling interval on an account does not
force delaying all accounts to poll next in the future by the new
interval. Instead, K-9 Mail now adjusts the next poll time based on
what the next poll time should be based on the last poll finish and
the new interval.
Example 1: In the old way, if the old polling interval was 1 hour, and
the next poll was 50 minutes away (10 minutes have passed), and you
changed the interval to 15 minutes, the poll would happen 15 minutes
from now. In the new way, the next poll will happen only 5 minutes
from now, which is 15 minutes since the last poll.
Example 2: In the old way, if the old polling interval was 1 hour, and
the next poll was 10 minutes away (50 minutes have passed), and you
changed the interval to 30 minutes, the poll would happen 30 minutes
from now. The next poll would then happen actually 80 minutes after
the previous poll completed. In the new way, it'll actually happen
immediately, because the time for the next poll, based on the new
schedule, has already passed.
Similar scenarios happen when a loss of network connectivity
occurs. In the old way, polling would resume using the restoration of
connectivity as the starting point. Each time network connectivity
was lost and restored, the next poll would be further delayed. *If
connectivity was lost and restored frequently, a poll might never
happen!* In the new way, the next poll is rescheduled based on the
time of the last successful poll, so will be rescheduled just like it
was before the loss of connectivity. If the time has already been
passed, the poll will happen immediately.
Provide for setting Sent folder to -NONE- which suppresses actually
saving sent mail in any folder.
Also, eliminate logging which folders are not configured for pushing.
It was just too much logging.
Only reschedule polling and setup pushing when necessary due to
particular setting changes. Makes the K-9 Mail UI much more
responsive to setting changes that do not affect polling and pushing.
The poll schedule is deliberately only rescheduled when the period is
decreased. An increase in period will still allow the next scheduled
check to happen as originally scheduled.
Fixes Issue 1034
Refresh Account from Preferences, so that it'll have a fresh copy of
all information. Failure to do this caused the AccountSettings
Activity to show stale information when invoked repeatedly from the
same prior Activity.
Provides for menu items to quickly change the mode of displayed
folders. Also, reorganizes the menu to have an Advanced sub-menu,
like Accounts page has.
Desparately needs a new icon for the Folders menu item.
physical keyboards, though, and should be modified to only re-setup
pushers. Current implementation causes a wasteful reschedule of
polling.
Also gets the help Toast for the folder up-to-date after the
FolderList/MessageList split.
force-closes and inconsistent data on activity reuse. Also, removing
broken/unused code to preserve activity state across invocations.
across invocations.
Don't show messages that are already deleted on the server when we
first download them.
Also, correct item 1 from my comments on r1355. No longer notify for
mails I sent when I selected not to be notified for mails I sent.
* Add an explicit configuration option for stars
* Replace now-outdated "left handed" widgets config option, now that
select widgets are always on the left.
* since the multi-modality of the message list was now only a "toggle
stars" option, kill that, as it was lots of code and rather redundant
always-available select action. For the moment, this means
that widgets_on_left does nothing at all. based on feedback, I may kill
the preference and multi-mode behaviour entirely in favor of "show stars?"
(and possibly "show stars on left"
Stars, "checkboxes" and color bars updated to actually fit in wide mode.
Fixes Issue 806
Make sure to close opened folders in finally blocks in
MessagingController.
Don't make another connection when deleting or copying a
message. (Nicely speeds up copy and delete, as well.)
Another connection is still created for creating a folder while
copying or deleting (a pretty rare event), and the IMAP IDLE
connections are not re-used for user initiated activity.
Automatically build jar file for external applications.
Create convenience functions in K9RemoteControl so that external
applications do not need to know the details of handling the Intents
and broadcasts.
Send a permission string in the broadcasts so that unauthorized
applications cannot intercept communication to authorized
applications, such as K-9 Mail.
to accept control from other Android applications. Allows for
changing both Account-level and global settings. Account-level
settings can be applied to a single Account or to all Accounts.
The file class file derived from src/com/fsck/k9/K9RemoteControl.java
will be bundled into a JAR file for use by external applications.
This facility will be used for:
Issue 215
Issue 730
Issue 864
Issue 884
global config option rather than a per-account one. (But with a new
implementation.) - As we now have views that show messages across
accounts, this needed to become a global)
MessagingController was calling the MessagingListener twice for
deleted messages. By the time the second call was made, some
Activities already had removed the message holder, so a null holder
was being put on the list.
This change should prevent the double calls, and adds protection
against have the MessageList MessagingListener called with a message
that is no longer in the MessageList.
Also, some logical cleanups.
push technology. This provide a layer of safety in case of
misconfiguration (accidentally setting too many folders to push using
classes), which can bog down the device till it is unusable. On a G1,
25 folders is a very large load. Fixes Issue 871.
Also, move some pending commands to the background to make way for
more important user interface activity.
On each IMAP account, the expunge behavior can be set to expunge
messages in a folder as soon as a move or delete is performed on the
folder ("immediately"), each time the folder is polled, or only when
executed manually.
In the Message List, there is now an Expunge action in the option
menu.
In the Folder List, there is now an Expunge action in the context
menu (long-press on the folder).
For IMAP accounts, it is also possible to disable the copying of deleted messages to the
Trash folder, by setting the Trash folder to -NONE-.
Fixes Issue 536.
Separately, in WebDAV accounts, the user can now choose the
server-side equivalents of the special folders, just like for IMAP.
count, scoped for the Activity, the in-progress operation, the account
on which the operation is in progress, the folder for the operation,
when appropriate, and the progress of the operation, when it applies
to multiple items. For the MessageList, also use the determinate
progress bar to show progress for synchronization of the folder being
displayed.
Fixes Issue 924.
Also, a minor change that might help with Issue 913, by putting the
insertion of the pending command into a background thread.
from SQLite at once. The hope is that this will improve perceived
performance on large folders by starting message display sooner.
In the case of a background sync while we're loading, we _may_ end up
doing more work than necessary, since we implement paging by "date
received"
flag/unflag, mark as read/unread and delete. Also provides explicit
mode changing, and select/deselect all. Move and copy are partially
implemented, but disabled.
Desperately needs a new icon.
The "Sort by..." menu now toggles ascending/descending when the
currently selected sort mode is clicked.
Also, an ineffective change to setting the title in the Message List.
A bit more work is in order on that.
Tested to not break unix logfiles ;)
Comment #7 on issue 819 by jessev: Hide empty CC: lines in Message View
http://code.google.com/p/k9mail/issues/detail?id=819
My intent is to default to showing Subject. Date and From or To (depending on whether you're the sender) with a button/widget/hyperlink/something to fold down and show more detail.
--
You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue.
You may adjust your issue notification preferences at:
http://code.google.com/hosting/settings
Dec 1 19:15:48 mar-adentro kernel: [ 4291.016228] usb 1-6: reset high speed USB device using ehci_hcd and address 4
Dec 1 19:15:48 mar-adentro kernel: [ 4291.308225] usb 2-5: reset high speed USB device using ehci_hcd and address 2
Dec 1 19:15:48 mar-adentro kernel: [ 4291.552221] usb 3-1: reset full speed USB device using uhci_hcd and address 2
Dec 1 19:15:48 mar-adentro kernel: [ 4292.136224] usb 5-1: reset full speed USB device using uhci_hcd and address 2
Dec 1 19:15:48 mar-adentro kernel: [ 4292.425282] usb 3-1.1: reset full speed USB device using uhci_hcd and address 3
Dec 1 19:15:48 mar-adentro kernel: [ 4292.613282] usb 3-1.2: reset full speed USB device using uhci_hcd and address 4
Dec 1 19:15:48 mar-adentro kernel: [ 4292.780373] Restarting tasks ... done.
Dec 1 19:15:48 mar-adentro kernel: [ 4292.784292] usb 3-1.3: USB disconnect, address 7
Dec 1 19:15:49 mar-adentro kernel: [ 4293.230042] ADDRCONF(NETDEV_UP): eth0: link is not ready
Dec 1 19:15:49 mar-adentro kernel: [ 4293.987736] usb 3-1.3: new full speed USB device using uhci_hcd and address 8
Dec 1 19:15:50 mar-adentro kernel: [ 4294.141687] usb 3-1.3: configuration #1 chosen from 1 choice
Dec 1 19:15:54 mar-adentro pulseaudio[1548]: ratelimit.c: 82 events suppressed
Dec 1 19:16:06 mar-adentro kernel: [ 4310.825436] Registered led device: iwl-phy0::radio
Dec 1 19:16:06 mar-adentro kernel: [ 4310.825459] Registered led device: iwl-phy0::assoc
Dec 1 19:16:06 mar-adentro kernel: [ 4310.825479] Registered led device: iwl-phy0::RX
Dec 1 19:16:06 mar-adentro kernel: [ 4310.825500] Registered led device: iwl-phy0::TX
Dec 1 19:16:06 mar-adentro kernel: [ 4310.879827] ADDRCONF(NETDEV_UP): wlan0: link is not ready
Dec 1 19:16:20 mar-adentro kernel: [ 4324.261675] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Dec 1 19:16:22 mar-adentro kernel: [ 4326.254795] padlock: VIA PadLock not detected.
Dec 1 19:44:22 mar-adentro kernel: [ 6006.712166] usb 2-4: new high speed USB device using ehci_hcd and address 5
Dec 1 19:44:22 mar-adentro kernel: [ 6006.865987] usb 2-4: configuration #1 chosen from 1 choice
Dec 1 19:44:22 mar-adentro kernel: [ 6006.869856] scsi7 : SCSI emulation for USB Mass Storage devices
Dec 1 19:44:27 mar-adentro kernel: [ 6011.871419] scsi 7:0:0:0: Direct-Access HTC Android Phone 0100 PQ: 0 ANSI: 2
Dec 1 19:44:27 mar-adentro kernel: [ 6011.873138] sd 7:0:0:0: Attached scsi generic sg2 type 0
Dec 1 19:44:27 mar-adentro kernel: [ 6011.906600] sd 7:0:0:0: [sdb] Attached SCSI removable disk
Dec 1 19:44:34 mar-adentro kernel: [ 6018.102244] sd 7:0:0:0: [sdb] 3862528 512-byte logical blocks: (1.97 GB/1.84 GiB)
Dec 1 19:44:34 mar-adentro kernel: [ 6018.110282] sdb: sdb1
Dec 1 20:00:57 mar-adentro pulseaudio[1548]: ratelimit.c: 1 events suppressed
Dec 1 20:28:13 mar-adentro pulseaudio[1548]: ratelimit.c: 2 events suppressed
LocalStore.purgeToVisibleLimit only to work on undeleted messages.
Convert LocalStore.clear() to use the new DELETED column.
Make markAllAsRead only work on undeleted messages.
Message List batch ops wired to bulk flagging.
Manage batch button state when messages are deleted (from outside
agents) while in batch mode.
Remove throws clause from Folder.close() to make it easier to close
folders where necessary.
Eliminate some cruft from MessageList
Consolidate unreadMessageCount fetching in notifyAccount
Fixes Issue 734
On reconnection, IMAP IDLE folders will now fetch up to the most
recent 10 message that arrived while a IDLE connection was not
available.
Fixes Issue 232
A serving of NAMESPACE-based auto-configuration on the side. If the
IMAP prefix is empty, and the IMAP server supports NAMESPACE, use the
IMAP prefix supplied by NAMESPACE. Also, if the user manually puts
the separator as the last character in the prefix, don't append the
separator.
Also:
Improved reliability of IMAP IDLE incoming message and flag state
change handling. Reduction (but not elimination) of multiple
connections under startup conditions.
1) Actual message sync on MessagingController uses same connection as
IDLE for faster and more efficient push operation. Uses fewer
connections to the server.
2) More aggressive handling of untagged responses should more reliably
get flag changes and new messages when many events happen at once.
3) Simplification of new mail notification
4) Push mail now respects the folder visible limit
5) When multiple untagged FETCH responses arrive en bloc, the actual
message flags and UIDs are fetched with a single request
Fixes Issue 394
Fixes Issue 763
Completely new Services architecture providing proper Service
lifecycle management.
Long running tasks in MailService are executed in a separate thread,
but the service is not stopped until the tasks are complete.
SleepService for providing synchronous sleeps with proper WakeLock
integration.
Mail polling logic moved from MailService to PollService
PushService to keep application from being killed while push is
running.
Improved logging of IMAP protocol, including logging folder name,
thread and connection hashcode.
Don't put a failed connection back into the IMAP mConnections
storage.
IMAP IDLE uses new SleepService for delaying between failed connection
attempts (allows phone to sleep and provides better reliability)
Use a ThreadLocal for ImapPusher wakelocks
Component enablement/disablement in Email is done only when components
are out of phase with desired state. (Issue 188)
. Added content-type detection using file name extension
. This adds better integration with OI File Manager which implements the ACTION_GET_CONTENT intent
Fixes Issue 133
Really, just displays a Toast and allows K-9 to continue in some
situations that otherwise cause a crash. Will hopefully allow users
of Android 2.0 to use K-9, but may just provide better info about what
is going wrong.
Fixes Issue 577
K-9 has earned its Canine Good Citizen.
K-9 now respects the Android-global Background data preference, by
default. However, there is an override, allowing K-9 to ignore the
global preference, by either always running around and synchronizing
in the background, or staying put and not synchronizing.
A user can now elect to turn off mail synchronization across all
accounts in either the K-9 Preferences page by setting Background
synchronization to Never, or leaving that value as "When 'Background
data' is checked" and deselecting the Android-global Background data
preference.
1) Automatically add / separators if not supplied by user. Fixes
Issue 290
2) Enable Move and Copy.
3) Enable setting a message to unread state.
4) Set authentication header for downloading and sending messages, so
that those functions work with sites using Basic authentication.
5) Don't swallow log Exceptions. Instead, allow Exceptions to
percolate up to higher levels so that they can be logged into
K9mail-errors.
6) Provide appendMessages function, so that Drafts get stored on the
server.
7) Enable server-side message deletion, using user-selected Trash
folder.
because a user that has auto-open set to a particular folder might
never get to the actual folder list which contains the option menu
containing Account Settings. (There's been one comment in the Market
pertaining to this.)
This commit contains the entirety of the changes performed in the
issue4-1.X branch from revision 718 through revision 851. Because the
issue4-1.X branch was up-to-date with trunk revision 847 at revision
849, the source of this commit was not an "svn merge". Instead, it is
merely a copy of all changed files from the issue4-1.X branch to my
trunk working copy and a straight commit.
Also:
Issue 551
Issue 628
Issue 650
Issue 654
Issue 656
Issue 682
Issue 696
Improve reliability of message viewing and composing while still using
MessagingController worker queues
svn merge -x -w -c 761 ../issue4-1.X/ .
Put loading a message from the LocalStore into a ThreadPool executor,
like was done previously in MessageView. Remote loading still goes
through the work queue.
Note: No putting 'Account Settints' and 'Accounts' menu option on MessageList as it does not belong there
TODO: Add more menu options: Mark All As Read, Folder Settings, etc...
Note: No putting 'Account Settints' and 'Accounts' menu option on MessageList as it does not belong there
TODO: Add more menu options: Mark All As Read, Folder Settings, etc...
Issue 30
Provide support for multiple identities. Identities can be managed in
the Account Settings. While composing a message, an identity can be
chosen for sending. Identity information and signature edits are
saved in a header field, so that they survive being synced to the
server and back.
Provide support for editing the quoted text, either for replies or
forwards. The quoted text is immediately editable, in a separate
editor from the main body. When saved in a draft, the two are
contatenated, but the length of the main body is saved with the
identity information, and is used to split the two parts again, when
opening the draft.
