Summary:
Unmuck almost all of the we-sort-of-have-viewers-some-of-the-time mess.
There are a few notable cases here:
- I used Omnipotent users when indexing objects for search. I think this is correct; we do policy filtering when showing results.
- I cheated in a bad way in the Remarkup object rule, but fixing this requires fixing all the PhabricatorRemarkupEngine callsites (there are 85). I'll do that in the next diff.
- I cheated in a few random places, like when sending mail about package edits. These aren't a big deal.
Test Plan:
- Grepped for all PhabricatorObjectHandleData references.
- Gave them viewers.
Reviewers: vrana
Reviewed By: vrana
CC: aran, edward
Maniphest Tasks: T603
Differential Revision: https://secure.phabricator.com/D5151
Summary: This triggers mainly for SVN branch copy.
Test Plan: Ran this code separately.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D5126
Summary:
T2345
getConfig throws an Exception when the key does not exist.
Also removes dead code that throws an Exception.
Test Plan:
Reloaded the Phabricator home page. In the process, found
2 Exceptions thrown due to nonexistent keys. After addressing these problems,
the home page loads without Exceptions.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D4541
Summary: introducing a new friend called DifferentialHunkParser. Sort of like the DifferentialChangesetParser but works with hunks only. tried to grab hunk parsing type things from across the code base and move them into this new class.
Test Plan: unit tests and played around in Differential a bit.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T2009
Differential Revision: https://secure.phabricator.com/D4351
Summary:
This commit doesn't change license of any file. It just makes the license implicit (inherited from LICENSE file in the root directory).
We are removing the headers for these reasons:
- It wastes space in editors, less code is visible in editor upon opening a file.
- It brings noise to diff of the first change of any file every year.
- It confuses Git file copy detection when creating small files.
- We don't have an explicit license header in other files (JS, CSS, images, documentation).
- Using license header in every file is not obligatory: http://www.apache.org/dev/apply-license.html#new.
This change is approved by Alma Chao (Lead Open Source and IP Counsel at Facebook).
Test Plan: Verified that the license survived only in LICENSE file and that it didn't modify externals.
Reviewers: epriestley, davidrecordon
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T2035
Differential Revision: https://secure.phabricator.com/D3886
Summary: this makes notifications work better for folks who choose to handle things in Phabricator and not over email
Test Plan: had my test account and "real" account battle each other on a few tasks and divs. Noted that I received emails appropos to the respective settings.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T1977
Differential Revision: https://secure.phabricator.com/D3856
Summary: See D3789. Same thing for Differential.
Test Plan: Created a new revision and made a comment. Verified reviewer got popup notifications but the in-app notifications were delivered already marked as read.
Reviewers: vrana, btrahan
Reviewed By: vrana
CC: aran
Maniphest Tasks: T1403
Differential Revision: https://secure.phabricator.com/D3790
Summary: When we receive an email, figure out if any of the other tos and ccs are users. If they are, pass their phids through the stach as "exclude phids" and exclude them from getting the email.
Test Plan: used the various applications (audit, differential, maniphest) and noted emails were sent as expected.
Reviewers: epriestley, vrana
Reviewed By: vrana
CC: aran, Korvin, vrana
Maniphest Tasks: T1676
Differential Revision: https://secure.phabricator.com/D3645
Summary: This is a minor quality-of-life improvement to prevent D2968 from being as nasty as it is.
Test Plan: Ran unit tests; generated Differential, Maniphest and Diffusion emails and verified the bodies looked sensible.
Reviewers: btrahan, vrana
Reviewed By: vrana
CC: aran
Maniphest Tasks: T931
Differential Revision: https://secure.phabricator.com/D2986
Summary:
- Assigning $cc_phids clobbers the correct value assigned on line 80.
- Remove stack trace noise, the trace is always meaningless and well-known.
- Actually show the original body.
Test Plan: Piped mail to the mail receiver and verified the errors didn't CC revision CCs, no longer had traces, and included the original raw text body.
Reviewers: btrahan, jungejason
Reviewed By: jungejason
CC: aran
Differential Revision: https://secure.phabricator.com/D2969
Summary: People want to create filters checking if they are in CC which is almost impossible with multiplexing in Outlook.
Test Plan: Sent e-mail with multiple CCs, verified headers.
Reviewers: epriestley, nh
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D2829
Summary:
Works this way:
- Select users' language with multiplexing.
- Select default language otherwise (it can be different from current user's language).
- Build body and subject for each user individually.
- Set the original language after sending the mails.
Test Plan:
- Comment on a diff of user with custom translation.
- Set default to a custom translation. Comment on a diff of user with default translation.
- Set default to a default translation. Comment on a diff of user with default translation.
Repeat with/without multiplexing.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T1139
Differential Revision: https://secure.phabricator.com/D2774
Summary:
This is the first step in Phabricator internationalization.
It adds a translation selector and calls it at startup.
Installations can add custom selectors to override some texts.
We can add official translations in future.
Next step is to allow user to choose his translation which will override the global one.
This is currently used only for English plurals.
Test Plan: Displayed a diff with unit test error, verified that it says 'Detail' or 'Details' and not 'Detail(s)'.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T1139
Differential Revision: https://secure.phabricator.com/D2753
Summary:
Some e-mail clients display this header and it needs to be constant.
This is somehow involved but I doubt that there is a simpler solution.
Test Plan:
Applied SQL patch.
Commented on revision, commented on commit, changed package.
Verified that the `Thread-Topic` has constant and human readable value.
Reviewers: epriestley
Reviewed By: epriestley
CC: ola, aran, Korvin
Differential Revision: https://secure.phabricator.com/D2745
Summary: NOTE: This can break current ongoing conversations.
Test Plan: Commented on a revision and checked the header in the e-mail.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T1340
Differential Revision: https://secure.phabricator.com/D2723
Summary:
It seems that Outlook and Mail.app mostly ignores the threading headers and thread primarily by subject.
They are also very picky about the Re: part in the header.
I guess that's because users of these clients often hit Reply when they want to create a new message to the sender of an e-mail.
We need both of these applications to work with the same setting because we don't use multiplexing to prevent sending multiple e-mails to people in lists.
I also believe that the default behavior should just work in most setups.
I've tried several different combinations of putting "Re:" and none of them seems to always work in both clients.
This diff at least adds more abstraction to the code which should prevent copy/paste errors (two fixed by this diff!).
Test Plan: Sent several e-mails with varying subject, verified that they look as before in Outlook and Mail.app.
Reviewers: epriestley, nh
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D2709
Summary:
This also changes some stuff:
- Reviewers used to be at top, now they are under comments.
- Primary reviewer is now rendered as first.
Test Plan: Added `renderValueForMail()` to a custom field, created diff, commented on it and verified e-mails.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D2664
Summary:
- `kill_init.php` said "Moving 1000 files" - I hope that this is not some limit in `FileFinder`.
- [src/infrastructure/celerity] `git mv utils.php map.php; git mv api/utils.php api.php`
- Comment `phutil_libraries` in `.arcconfig` and run `arc liberate`.
NOTE: `arc diff` timed out so I'm pushing it without review.
Test Plan:
/D1234
Browsed around, especially in `applications/repository/worker/commitchangeparser` and `applications/` in general.
Auditors: epriestley
Maniphest Tasks: T1103
Summary:
This adds a link to [Closed] e-mail if it detects some changes.
It compares added and removed lines with 3 lines context.
The subtle form of informing is permissive to false negatives and positives.
I have an e-mail filter for [Closed] e-mails so I wouldn't personally notice this change - we should probably promote this feature a little bit.
Test Plan:
Reparse a diff with a change after last update.
Reparse a diff without a change after last update.
Reviewers: jungejason, epriestley
Reviewed By: jungejason
CC: aran, Koolvin, btrahan
Maniphest Tasks: T201
Differential Revision: https://secure.phabricator.com/D2540
Summary: "Committed" is SVN-specific language, and confusing in Git and Mercurial. Use neutral language instead.
Test Plan: Inspection.
Reviewers: btrahan, Makinde, vrana, jungejason
Reviewed By: vrana
CC: aran
Maniphest Tasks: T909
Differential Revision: https://secure.phabricator.com/D2087
Summary:
- Add an explicit multiplexing option, and enable it by default. This is necessary for Mail.app to coexist with other clients ("Re:" breaks outlook at the very least, and generally sucks in the common case), and allows users with flexible clients to enable subject variance.
- Add an option for subject line variance. Default to not varying the subject, so mail no longer says [Committed], [Closed], etc. This is so the defaults thread correctly in Gmail (not entirely sure this actually works).
- Add a preference to enable subject line variance.
- Unless all mail is multiplexed, don't enable or respect the "Re" or "vary subject" preferences. These are currently shown and respected in non-multiplex cases, which creates inconsistent results.
NOTE: @jungejason @nh @vrana This changes the default behavior (from non-multiplexing to multiplexing), and might break Facebook's integration. You should be able to keep the same behavior by setting the options appropriately, although if you can get the new defaults working they're probably better.
Test Plan:
Send mail from Maniphest, Differential and Audit. Updated preferences. Enabled/disabled multiplexing. Things seem OK?
NOTE: I haven't actually been able to repro the Gmail threading issue so I'm not totally sure what's going on there, maybe it started respecting "Re:" (or always has), but @cpiro and @20after4 both reported it independently. This fixes a bunch of bugs in any case and gives us more conservative set of defaults.
I'll see if I can buff out the Gmail story a bit but every client is basically a giant black box of mystery. :/
Reviewers: btrahan, vrana, jungejason, nh
Reviewed By: btrahan
CC: cpiro, 20after4, aran
Maniphest Tasks: T1097, T847
Differential Revision: https://secure.phabricator.com/D2206
Summary:
When Phabricator is configured to generate patch email, we'll fatal if the patch contains binaries and is generating to Git because ArcanistBundle can't load the binary data. Provide a callback to load the data. See D2174.
(This may cause us to generate absolutely enormous emails, but you get what you asked for...)
Test Plan: Created a diff with an image under "send git patches" email configuration.
Reviewers: Makinde, btrahan, vrana, jungejason
Reviewed By: Makinde
CC: aran
Differential Revision: https://secure.phabricator.com/D2175
Summary: NOTE: This is not produced by a script so there might be errors. Please review carefully.
Test Plan: Browse around Differential.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran
Differential Revision: https://secure.phabricator.com/D2103
Summary: This header allows recipients to distinguish between CCs generated by Herald and CCs generated by humans.
Test Plan: Created a Herald rule to add a bunch of CC's to every revision. Created a revision. Added some CCs manually. Verified that only manual CCs appeared in the "Explicit" header.
Reviewers: btrahan, vrana
Reviewed By: btrahan
CC: aran, epriestley
Maniphest Tasks: T808
Differential Revision: https://secure.phabricator.com/D2018
Summary:
It is now possible to set config setting requiring class of certain implementation to something completely else.
The consequence is that your Phabricator may stop working after update because you didn't implement some new method.
This diff validates the class upon usage.
It throws exception which is better than fatal thrown currently after calling undefined method.
Better solution would be to validate classes when setting the config but it would be too expensive - respective class definitions would have to be loaded and checked by reflection.
I was also thinking about some check script but nobody would run it after changing config.
The same behavior should be implemented for these settings:
- metamta.mail-adapter
- metamta.maniphest.reply-handler
- metamta.differential.reply-handler
- metamta.diffusion.reply-handler
- storage.engine-selector
- search.engine-selector
- differential.field-selector
- maniphest.custom-task-extensions-class
- aphront.default-application-configuration-class
- controller.oauth-registration
Test Plan:
Send comment, verify that it pass.
Change `metamta.differential.reply-handler` to incompatible class, verify that sending comment shows nice red exception.
Set `metamta.differential.reply-handler` to empty string, verify that it throws.
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: aran, epriestley
Differential Revision: https://secure.phabricator.com/D1919
Summary: No big surprises here, delted the unused "DarkConsole" class.
Test Plan: Ran 'testEverythingImplemented' to verify I wasn't finalizing anything we extend.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran, epriestley
Maniphest Tasks: T795
Differential Revision: https://secure.phabricator.com/D1876
Summary:
- Enforce proper workflow rules.
- Fix a derp-bug with patches.
Test Plan:
- Tried to mark a revision I didn't own.
- Tried to mark a revision already marked committed.
- Tried to mark a revision otherwise not accepted.
- Verified daemon can override workflow rules and mark from arbitrary states.
Reviewers: btrahan, Makinde
Reviewed By: Makinde
CC: aran, epriestley
Maniphest Tasks: T948
Differential Revision: https://secure.phabricator.com/D1809
Summary:
We already generate patches, but currently attach them. Allow them to be inlined instead (optionally, up to a certain size).
Also allow selection between unified and git patches.
Test Plan: Set these options in my local config, sent out a diff.
Reviewers: btrahan, Makinde
Reviewed By: Makinde
CC: aran, epriestley
Maniphest Tasks: T874
Differential Revision: https://secure.phabricator.com/D1759
Summary:
- We have a lot of headers now; document them.
- Remove the one random protip from like 3 years ago from all Differential
mail.
Test Plan: generated; read documentation
Reviewers: btrahan
Reviewed By: btrahan
CC: aran, epriestley
Maniphest Tasks: T931
Differential Revision: https://secure.phabricator.com/D1748
Summary:
I want to flag messages which require an immediate action from me in e-mail
client.
It is currently not possible because Author and Reviewers fields are both in
To:.
So the filtering rule cannot recognize if I am the person who should take the
action.
This diff adds these headers:
- X-Differential-Author
- X-Differential-Reviewers
- X-Differential-CCs
Test Plan:
Send comment to the diff.
Verify X-Differential-* headers.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, epriestley
Maniphest Tasks: T808
Differential Revision: https://secure.phabricator.com/D1724
Summary:
A few similar requests have come in across several tools and use cases that I
think this does a reasonable job of resolving.
We currently send one email for each update an object receives, but these aren't
always appreciated:
- Asana does post-commit review via Differential, so the "committed" mails are
useless.
- Quora wants to make project category edits to bugs without spamming people
attached to them.
- Some users in general are very sensitive to email volumes, and this gives us
a good way to reduce the volumes without incurring the complexity of
delayed-send-batching.
The technical mechanism is basically:
- Mail may optionally have "mail tags", which indicate content in the mail
(e.g., "maniphest-priority, maniphest-cc, maniphest-comment" for a mail which
contains a priority change, a CC change, and a comment).
- If a mail has tags, remove any recipients who have opted out of all the
tags.
- Some tags can't be opted out of via the UI, so this ensures that important
email is still delivered (e.g., cc + assign + comment is always delivered
because you can't opt out of "assign" or "comment").
Test Plan:
- Disabled all mail tags in the web UI.
- Used test console to send myself mail with an opt-outable tag, it was
immediately dropped.
- Used test console to send myself mail with an opt-outable tag and a custom
tag, it was delivered.
- Made Differential updates affecting CCs with and without comments, got
appropriate delivery.
- Made Maniphest updates affecting project, priority and CCs with and without
comments, got appropriate delivery.
- Verified mail headers in all cases.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran, epriestley, moskov
Maniphest Tasks: T616, T855
Differential Revision: https://secure.phabricator.com/D1635
Summary:
Reviews with empty summary are rendered like this:
Reviewers: ...
TEST PLAN
Test Plan:
Use empty summary.
Use non-empty summary.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, epriestley
Differential Revision: https://secure.phabricator.com/D1528
Summary:
I always forget a branch which I used for the diff so that I must open
my browser which takes some time. This diff adds the name of the branch to the
sent e-mails. But only if the diff is in the state Accepted or Needs Revision to
not pollute other e-mails.
Test Plan:
Comment
Request changes
Accept
Look at the e-mails
Reviewers: epriestley
Reviewed By: epriestley
CC: olivier, aran, epriestley, vrana
Differential Revision: https://secure.phabricator.com/D1396
Phabricator
Summary: ...this breaks without D1328. Used good ole "codemod" to do this
work, with lots of manual edits around 80 chars.
Test Plan: clicked around phabricator tool suite, particular differential, a
bunch
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, epriestley
Differential Revision: https://secure.phabricator.com/D1351
Summary:
Move event framework from Phabricator to libphutil so it can be used in other
phutil projects, such as Arcanist.
Test plan:
Use along with path to libphutil, events should work as expected.
Reviewers: epriestley
Differential Revision: 1098
Summary: Allow tweaking Differential mail before sending.
Test Plan:
Wrote a listener renaming Differential attachments and it worked without
problems.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, epriestley, mareksapota, davidreuss
Differential Revision: 1091
transactional mail
Summary: See T571. SES refuses to deliver mail with this header and there are
various reports of other issues on the internet so I'm defaulting it to off.
Test Plan: Set config to true, tried to send mail, SES rejected it because of
"Precedence: bulk" header.
Reviewers: bmaurer, ola, jungejason, nh, aran
Reviewed By: aran
CC: aran, epriestley, bmaurer
Differential Revision: 1032
Test Plan:
Turn on sending patches, create a new revision - you should get a .patch file in
your mail instead of a .diff file.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, epriestley
Differential Revision: 1016
Summary: This used to be in the subject but there was a bunch of churn and now
it's nowhere.
Test Plan: Created, updated, and added CCs to a diff.
Reviewed By: moskov
Reviewers: moskov, avitaloliver, jungejason, tuomaspelkonen, aran
CC: aran, moskov
Differential Revision: 567
explicitly
Summary: You currently have to click through to figure out who got added.
Test Plan:
- Made a comment which added CCs.
- Made a comment which added reviewers.
- Made a comment which added nothing.
- Made a comment which added CCs and reviewers.
Reviewed By: tomo
Reviewers: tomo, jungejason, tuomaspelkonen, aran
CC: aran, tomo
Differential Revision: 562
Summary:
See T251. In Gmail, conversations split if you reply to them and the next email
does not "In-Reply-To" your message ID. When an action is triggered by an email,
carry its Message-ID through the stack and use it for "In-Reply-To" and
"References" on the subsequent message.
Test Plan:
Live-patched phabricator.com and replied to a Maniphest thread in Gmail without
disrupting the thread. Locally replied to Maniphest and Differential threads and
verified Message-ID was carried across the reply boundary.
Reviewed By: rm
Reviewers: tcook, jungejason, aran, tuomaspelkonen, rm
CC: aran, epriestley, rm
Differential Revision: 498
Summary:
This is just fluff to let me mailfilter my local sandbox. Would also allow the
Facebook install to return to "[diff]" if eletuchy is still unhappy about this
change.
Test Plan:
Triggered maniphest/differential emails, had normal prefixes. Overrode prefixes
in my custom config, got sandbox-unique prefixes.
Reviewed By: aran
Reviewers: jungejason, tuomaspelkonen, aran
CC: elgenie, aran
Differential Revision: 291
Phabricator
Summary:
Hook up the last pieces. This shouldn't impact the Facebook install, EXCEPT that
I removed "!accept" and added "!rethink" (plan changes). If you want to continue
supporting !accept, you should override the method in your subclass if you don't
already.
Test Plan:
Used the Mail Receiver test console to send mail to tasks and revisions.
Reviewed By: aran
Reviewers: jungejason, tuomaspelkonen, aran
CC: aran
Differential Revision: 289
Summary:
Provide a base PhabricatorMailReplyHandler class which handles the plumbing for
multiplexing email if necessary and supporting public and private reply handler
addressses. DifferentialReplyHandler now extends it, and a new
ManiphestReplyHandler also does.
The general approach here is that we have three supported cases:
- no reply handler, default config, same as what we're doing now
- public reply handler, requires overriding classes but just sets "reply-to"
to some address the install generates and still sends only one email
- private reply handler, provides a default generation mechanism or you can
override it and splits mail apart so we send one to each recipient
Test Plan:
Sent email from Maniphest and Differential with and without
reply-handler-domains set.
Reviewed By: aran
Reviewers: jungejason, tuomaspelkonen, aran
CC: aran, epriestley
Differential Revision: 254
Summary:
These didn't get covered when we added square brackets to the rest of the emails
(so gmail can thread them properly).
Test Plan:
Created a local diff, got an email with brackets.
Reviewed By: tuomaspelkonen
Reviewers: rm, tuomaspelkonen, jungejason, aran
CC: aran, epriestley, tuomaspelkonen
Differential Revision: 256
Summary:
add email reply handler so that the user can reply to a
differential email to act on the revision. It generates the reply-to
email address, creates email body text with supported commands list, and
handle the action request on the differential revision.
Right now the reply-to handing is disabled in the config file. But a
site using Phabricator can enable it and implement a class
inheriting from DifferentialReplyHandler to enable customized email
handing.
Later we will need to add code to DifferentialMail.php to support
sending separate email to each email recipient to achieve better
security (see D226). The reply-to will be something like
D<revision_id>+<user_id>+<hash>@domain.com. We will create separate task
for it.
Test Plan:
tried comment on a revision from web UI and the email was
sent out as before without any change. When a subclass of
DifferentialReplyHandler is implemented and enabled, email's reply-to is
set and email text is added. Reply to the email with valid command did
create action to the revision.
Reviewed By: epriestley
Reviewers: tuomaspelkonen, epriestley, slawekbiel, dpepper
CC: aran, epriestley, jungejason
Differential Revision: 224
Summary:
Gmail ignores text inside of [square brackets] when deciding what to group
together. This diff does two things to create the right behavior for gmail:
1. put the verb text inside of [square brackets] so different verbs don't
break gmail threading.
2. Add the Diff ID to the email thread, so different diffs with the same name
don't group together.
Furthermore, to aid in distinguishing who is doing what when the from field
can't be spoofed, this diff adds the usename just before the verb. This works
quite well in the english language. For example:
[Differential] [rm requested a review of] D1: [admin] Create arcconfig for
code reviews
[Differential] [rm commented on] D1: [admin] Create arcconfig for code reviews
It's almost like a complete sentence. All it's missing is a period.
Test Plan:
Did it live on my test setup. Received emails with subjects that looked right.
Verified that gmail grouped the emails despite the different actions taking
place (tested: comments, planned changes, request review).
Reviewed By: epriestley
Reviewers: epriestley, jungejason
CC: aran, epriestley, rm
Differential Revision: 251
Summary:
I pretty shortsightedly made sending a side effect of save() in the case that a
server is configured for immediate sending. Move this out, make it explicit, and
get rid of all the tangles surrounding it.
The web tool now ignores the server setting and only repsects the checkbox,
which makes far more sense.
Test Plan:
Sent mails from Maniphest, Differential, and the web console. Also ran all the
unit tests. Verified headers from Maniphest.
Reviewed By: rm
Reviewers: aran, rm
CC: tuomaspelkonen, rm, jungejason, aran
Differential Revision: 200
Summary:
Amazon SES does not allow us to set a Message-ID header, which means
that threads are incorrect in Mail.app (and presumably other applications
which respect In-Reply-To and References) because the initial email does not
have anything which attaches it to the rest of the thread. To fix this, never
rely on Message-ID if the mailer doesn't support Message-ID.
(In the Amazon SES case, Amazon generates its own Message-ID which we can't
know ahead of time).
I additionally used all the Lisk isolation from the other tests to make this
testable and wrote tests for it.
I also moved the idea of a thread ID lower in the stack and out of
DifferentialMail, which should not be responsible for implementation details.
NOTE: If you push this, it will cause a one-time break of threading for
everyone using Outlook since I've changed the seed for generating Thread-Index.
I feel like this is okay to avoid introducing more complexity here.
Test Plan:
Created and then updated a revision, messages delivered over Amazon
SES threaded correctly in Mail.app. Verified headers. Unit tests.
Reviewed By: rm
Reviewers: aran, tuomaspelkonen, jungejason, rm
Commenters: aran
CC: aran, rm, epriestley
Differential Revision: 195
