Summary:
Fixes T7731. When a user writes a "Send me an email" rule, always try send them an email, even if their notification settings would normally downgrade it to a notification.
In particular, this is stronger than these downgrades:
- Downgrades due to "self actions";
- downgrades due to "mail tags".
Test Plan:
- Wrote various Herald rules with "Send me an email" rules.
- Used `bin/mail list-outbound` / `show-outbound` to vet generated mail.
- Mail reacted properly to a variety of conditions (disabled accounts, settings, "send me an email" rule, forced delivery).
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7731
Differential Revision: https://secure.phabricator.com/D12300
Summary:
Ref T7731. Looking forward to T5791, I eventually anticipate writing an interface which looks like a webmail UI where users can review mail they've been sent and understand why they recieved (or did not receive) the mail. Roughly like `bin/mail list-outbound` / `bin/mail show-outbound` work today, but policy-aware (so you can only see messages where delivery was attempted to you).
We currently record a list of "reasons" why a mail is undeliverable, but this list is string-based (so it can not be translated once we start persisting it) and has only negative reasons (so it can not be used to fully understand reasons for delivery or nondelivery).
Make it code-based (so it can be translated) and allow both positive and negative reasons to be listed (so positive reasons can be understood).
Test Plan: Used `bin/mail show-outbound` to review mail delivery reasons, including the positive reason we currently have (forced delivery of authentication mail).
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7731
Differential Revision: https://secure.phabricator.com/D12297
Summary:
Fixes T7712. Currently, files sent via email get default policies, like they were dragged and dropped onto the home page.
User expectation is better aligned with giving files more restrictive policies, like they were draggged and dropped directly onto an object.
Make files sent via email have restricted default visibility. Once we identify the sender, set them as the file author. Later, the file will become visible to other users via attachment to a task, revision, etc.
Test Plan: Sent some files via email; verified they got restrictive policies, correct authorship, and appropriate object attachment.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7712
Differential Revision: https://secure.phabricator.com/D12255
Summary: Fixes T7377. We don't expand projects into members when sending notifications right now. Instead, expand them.
Test Plan:
- Added a project as a reviewer to a revision, made a comment, saw project members receive a read notification + email (with appropriate preferences).
- There's meaningful test coverage on the core mail stuff.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7377
Differential Revision: https://secure.phabricator.com/D12142
Summary:
Ref T7522. This is mostly useful in the cluster, but could be useful for external installs too.
If you want to import an instance into a test/dry-run state (in the cluster, to test an import; in the general case, to do something like test new hardware or configuration), you currently risk spamming users with a lot of duplicate notifications. In particular, if Phabricator tracks remotes, both instances will continue importing commits and sending email about them. Both instances will try to publish to mirrors, too, which could be bad news, and both instances will try to update linked services.
Instead, provide a flag to let an instance run in "silent mode", which disables all outbound messaging and data.
We need to remember to support this flag on any new outbound channels, but we add about one of those per year so I think that's reasonable.
Test Plan:
- Flipped config.
- Saw it void email, feed and mirroring.
- Didn't test SMS since it's not really in use yet and not convenient to test.
- (Can you think of any publishing I missed?)
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7522
Differential Revision: https://secure.phabricator.com/D12109
Summary:
Ref T7607. Ref T7522.
- For the import tools, I want to send from "Phacility Support <support@phacility.com>".
- In the general case, I want to send billing mail from merchants (T7607) later on.
Test Plan: Sent an email and saw the desired "From" address.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7607, T7522
Differential Revision: https://secure.phabricator.com/D12100
Summary: Ref T3404. The only mildly sketchy bit is these codepaths all load the application email directly, by-passing privacy. I think this is necessary because not getting to see an application doesn't mean you should be able to break the application by registering a colliding email address.
Test Plan:
Tried to add a registered application email to a user account via the web ui and got a pretty error.
Ran unit tests.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T3404
Differential Revision: https://secure.phabricator.com/D11565
Summary: Ref T5952. This adds support for a "default author" and deploys it on Maniphest.
Test Plan: used augmented (by this diff) bin/mail receive-test to test creation via an application email with a default author configured and no author specified. a task was created with the author as the default author i configured.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T5952
Differential Revision: https://secure.phabricator.com/D11446
Summary: Ref T5952, T3404. This lays the basic plumbing for how this will work, all the way to deploying on Maniphest. Aside from what is mentioned on T5952, I think page(s) on editing application emails could use a little more helpful text about what's going on, similar to how the config page that's getting deprecated works.
Test Plan: ran migration and noted my create email address migrated successfully. used bin/mail to make a task. added another email and used bin/mail to make a task. deleted an email. edited an email. invoked various error states and they all looked good.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T3404, T5952
Differential Revision: https://secure.phabricator.com/D11418
Summary: Ref T5402. This more or less "fixes" it but there's probably some polish to do?
Test Plan:
stopped and started daemons. error logs look good.
ran bin/storage upgrade. noted that `adjust` added the appropriate indices for active and archive task.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T5402
Differential Revision: https://secure.phabricator.com/D11044
Summary:
Ref T1191. Now that the whole database is covered, we don't need to do as much work to build expected schemata. Doing them database-by-database was helpful in converting, but is just reudndant work now.
Instead of requiring every application to build its Lisk objects, just build all Lisk objects.
I removed `harbormaster.lisk_counter` because it is unused.
It would be nice to autogenerate edge schemata, too, but that's a little trickier.
Test Plan: Database setup issues are all green.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley, hach-que
Maniphest Tasks: T1191
Differential Revision: https://secure.phabricator.com/D10620
Summary:
Ref T1191. Ref T6203. While generating expected schemata, I ran into these columns which seem to have sketchy nullability.
- Mark most of them for later resolution (T6203). They work fine today and don't need to block T1191. Changing them can break the application, so we can't autofix them.
- Forgive a couple of them that are sort-of reasonable or going to get wiped out.
Test Plan: Saw 94 remaining warnings.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: hach-que, epriestley
Maniphest Tasks: T1191, T6203
Differential Revision: https://secure.phabricator.com/D10593
Summary: Ref T1191. Handful of minor things here (T6150, T6149, T6148, T6147, T6146) but nothing very noteworthy.
Test Plan: Viewed web UI, saw fewer errors.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T1191
Differential Revision: https://secure.phabricator.com/D10527
Summary: Ref T3307. Only one I thought was tricky was Excel; I went with bytes there like it was email.
Test Plan: played around on a few endpoints but mostly thought carefully
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T3307
Differential Revision: https://secure.phabricator.com/D10392
Summary:
Ref T992.
- Format text/HTML bodies explicitly in `bin/mail show-outbound`.
- Provide `bin/mail show-outbound --dump-html` so you can do something like `bin/mail show-outbound --dump-html > dump.html; open dump.html` to get a browser preview somewhat easily.
Test Plan: Ran `bin/mail show-outbound` with and without `--dump-html` flag.
Reviewers: talshiri, btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T992
Differential Revision: https://secure.phabricator.com/D10272
Summary:
Added support for side-by-side HTML and plaintext email building.
We can control if the HTML stuff is sent by by a new config, metamta.html-emails
Test Plan:
Been running this in our deployment for a few months now.
====Well behaved clients====
- Gmail
- Mail.app
====Bad clients====
- [[ http://airmailapp.com/ | Airmail ]]. They confuse Gmail too, though.
====Need testing====
- Outlook (Windows + Mac)
Reviewers: chad, #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: webframp, taoqiping, chad, epriestley, Korvin
Maniphest Tasks: T992
Differential Revision: https://secure.phabricator.com/D9375
Summary:
Ref T5861. Ref T5769. If users don't care at all about something, allow them to ignore it.
We have some higher-volume notifications either built now (column changes) or coming (mentions) which users might reasonably want to ignore completely.
Test Plan:
Ignored some notifications, then took appropraite actions. Saw my user culled from the notification subscriber list.
{F189531}
Reviewers: chad, btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5769, T5861
Differential Revision: https://secure.phabricator.com/D10240
Summary: Ref T5861. Adds an option to opt out of all notification email. We'll still send you password resets, email verifications, etc.
Test Plan:
{F189484}
- Added unit tests.
- With preference set to different things, tried to send myself mail. Mail respected preferences.
- Sent password reset email, which got through the preference.
Reviewers: btrahan, chad
Reviewed By: chad
Subscribers: rush898, epriestley
Maniphest Tasks: T5861
Differential Revision: https://secure.phabricator.com/D10237
Summary:
Fixes T5185. The fundamental issue is that this `excludePHIDs` property was not saved, so the logic went like this:
- Generate `excludePHIDs` correctly.
- Pass `excludePHIDs` through the stack.
- Perform some other computations correctly.
- Queue the mail for the daemons, throwing it away. {icon bomb}
- Daemons process mail with empty `excludePHIDs` list.
Store it in the persistent properties array instead.
Also remove the "override self mail" thing, since it's only used by `bin/mail send-test` and suffers from the same issue. I think it's too useless to fix, since even if you get caught by it, `bin/mail` makes it clear why the message was dropped.
Test Plan:
Notable:
- `exclude` present in properties
- Exclusion reason under RECIPIENTS header
{P1229}
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5185
Differential Revision: https://secure.phabricator.com/D10234
Summary:
Fixes T5233.
- The mail adapter API currently expects plain addresses (like `a@b.com`) in `addTos()`, and some adapters can not accept fancy verbose addresses (like `"name" <a@b.com>`).
- When we try to send error email, we pass the entire "From" header into the API. This is incorrect.
- Since it would be nice to make this just work in the future, fix it inside the API.
- Specifically, this is reached with: send email -> generates error -> we try to send you an email back -> we send it to your "From" -> some mailers choke on the fancy name if you have one.
Test Plan: Processed an errorneous email with a fancy "From", got a response error.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5233
Differential Revision: https://secure.phabricator.com/D10232
Summary:
Some mailers remove the duplicate entries themselves, but some (Mailgun) don't.
This affects installations with metamta.one-mail-per-recipient set to false, and will cause
- ugly looking "to" entries. Gmail, for example, collapses to+cc entries to one list, so you get something that looks like "to: me me john"
- It sometimes causes duplicate delivery of the same message when used in conjuction with Google Groups. I suspect that their message de-dup mechanism is confused by it (I fuzzed it directly with Mailgun, and saw the same message delivered twice - once directly through mailgun, and bounced again through Google Groups). This doesn't happen when the entries are not duplicated.
Test Plan: Created some tasks. Added subscribers. Things seem to work reasonably well.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D9978
Summary: Fixes T5336. Currently, `PhabricatorWorkerLeaseQuery` is basically FIFO. It makes more sense for the queue to be a priority-queue, and to assign higher priorities to alerts (email and SMS).
Test Plan: Created dummy tasks in the queue (with different priorities). Verified that the priority field was set correctly in the DB and that the priority was shown on the `/daemon/` page. Started a `PhabricatorTaskmasterDaemon` and verified that the higher priority tasks were executed before lower priority tasks.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin
Maniphest Tasks: T5336
Differential Revision: https://secure.phabricator.com/D9871
Summary: Ran `arc lint --apply-patches --everything` over rP, mainly to change double quotes to single quotes where appropriate. These changes also validate that the `ArcanistXHPASTLinter::LINT_DOUBLE_QUOTE` rule is working as expected.
Test Plan: Eyeballed it.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin, hach-que
Differential Revision: https://secure.phabricator.com/D9431
Summary:
- Support file attachments in Mailgun, after D8831.
- Fix `bin/mail send-test --attach ...` flag.
- Make `bin/mail send-test` route mail through the daemons.
- Remove the `workerTaskID` on MetaMTAMail, which is only used (needlessly) by `bin/mail resend` and creates a huge mess elsewhere.
- Currently, when mail fails, the daemon exits with a very generic and useless message. Instead, make `sendNow()` throw when it fails, so the real reason is surfaced. This is OK now because mail is always sent via the daemons.
- Now that Mailgun supports attachments, document it.
- Update a bunch of mail docs.
Test Plan:
- Sent mail.
- Sent mail with attachments.
- Read documentation.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D8832
Summary:
Fixes T4810. When a buildable completes, make an effort to update the corresponding object with a success or failure message. Commits don't support this yet, but revisions do.
{F144614}
Test Plan:
- Used `bin/harbormaster build` and `bin/harbormaster update` to run a pile of builds.
- Tried good/bad builds.
- Sent some normal mail to make sure the mail reentrancy change didn't break stuff.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4810
Differential Revision: https://secure.phabricator.com/D8803
Summary: From IRC, this is sometimes helpful for debugging if there's a mailing list issue or something like that. For example, it can show "To" and "Cc".
Test Plan: Got some email, saw headers in it.
Reviewers: dctrwatson, btrahan
Reviewed By: btrahan
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D8708
Summary: Ref T4371. We can reuse more code for this "your stuff is empty" error, now, and benefit from global rate limiting and being able to reply to arbitrary addresses.
Test Plan: Sent valid, empty, and empty-ignored email via `mail_handler.php`, got appropriate actions/errors/states.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4371
Differential Revision: https://secure.phabricator.com/D8701
Summary:
Ref T4371. Ref T4699. Fixes T3994.
Currently, we're very conservative about sending errors back to users. A concern I had about this was that mistakes could lead to email loops, massive amounts of email spam, etc. Because of this, I was pretty hesitant about replying to email with more email when I wrote this stuff.
However, this was a long time ago. We now have Message-ID deduplication, "X-Phabricator-Sent-This-Mail", generally better mail infrastructure, and rate limiting. Together, these mechanisms should reasonably prevent anything crazy (primarily, infinite email loops) from happening.
Thus:
- When we hit any processing error after receiving a mail, try to send the author a reply with details about what went wrong. These are limited to 6 per hour per address.
- Rewrite most of the errors to be more detailed and informative.
- Rewrite most of the errors in a user-facing voice ("You sent this mail..." instead of "This mail was sent..").
- Remove the redundant, less sophisticated code which does something similar in Differential.
Test Plan:
- Using `scripts/mail/mail_receiver.php`, artificially received a pile of mail.
- Hit a bunch of different errors.
- Saw reasonable error mail get sent to me.
- Saw other reasonable error mail get rate limited.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T3994, T4371, T4699
Differential Revision: https://secure.phabricator.com/D8692
Summary:
There are quite a few tests in Arcanist, libphutil and Phabricator that do something similar to `$this->assertEqual(false, ...)` or `$this->assertEqual(true, ...)`.
This is unnecessarily verbose and it would be cleaner if we had `assertFalse` and `assertTrue` methods.
Test Plan: I contemplated adding a unit test for the `getCallerInfo` method but wasn't sure if it was required / where it should live.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley
CC: Korvin, epriestley, aran
Differential Revision: https://secure.phabricator.com/D8460
Summary:
Ref T4361. Before we figure out which To/CC are addressable, try to expand To/CC. Specifically, the supported expansion right now is project PHIDs expanding to all their members.
Because of the way multiplexing works, we have to do this in two places: explicitly in `multiplexMail()`, and when sending mail that wasn't multiplexed. This is messy; eventually we can get rid of it (after ApplicationTransactions are everywhere).
This has some rough edges, but should basically give us what we need to make stuff like projects mailable. Particularly, it deals with most issues in D7436:
- I got around the resolution/multiplexing issue by resolving aggregate mailables separately from mailable actors.
- We get to keep the Project PHID as a To/CC/Reviewer/Whatever until the last second.
- Users won't get two emails for being a CC and also a member of a CC'd project.
- We can degrade to the list stuff this way if we want, by having the project aggregate yield a single list PHID.
Test Plan: Added a comment to a revision with a project reviewer, got mail to all the project's members.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4361
Differential Revision: https://secure.phabricator.com/D8117
Summary:
Fixes T4202. We have old code in MetaMTA which implements gradual backoff and maximum retries.
However, we have more general code in the task queue which does this, too. We can just use the more general stuff in the task queue; it obsoletes the specific stuff in MetaMTA, which is more complex and ran into some kind of issue in T4202.
Remove `retryCount`, `nextRetry` (obsoleted by task queue retry mechanisms) and "simulated failures" (no longer in use).
Generally, modern infrastructure has replaced these mechanisms with more general ones.
Test Plan:
- Sent mail.
- Observed unsendable mail failing in reasonable ways in the queue.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4202
Differential Revision: https://secure.phabricator.com/D8115
Summary:
Ref T3857.
- Always send mail via daemons. This lets us get rid of this config, and is generally much more performant.
- After D7964, we warn if daemons aren't running.
Test Plan: Sent some mail.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T3857
Differential Revision: https://secure.phabricator.com/D7965
Summary:
also try to centralize some of the command parsing logic. note that differential is still an exception here. it uses a whitelist-style regex. i think long-term we should have this for every app but changing it seemed too big for this diff.
Fixes T3937.
Test Plan:
echo '!assign btrahan' | ./bin/mail receive-test --as xerxes --to T22 ; echo '!claim' | ./bin/mail receive-test --as xerxes --to T22
unit tests passed, though my new one is silly
Reviewers: epriestley
Reviewed By: epriestley
CC: Korvin, epriestley, aran
Maniphest Tasks: T3937
Differential Revision: https://secure.phabricator.com/D7307
Summary:
we filter the $actors above such that its possible to have no $actor anymore (if $actor is not a deliverable email address). ergo, make sure we have actor before we start calling methods.
Fixes github issue 403
Test Plan: logic on this one - not 100% sure how to easily reproduce
Reviewers: epriestley
Reviewed By: epriestley
CC: Korvin, epriestley, aran
Differential Revision: https://secure.phabricator.com/D7284
Summary:
Ref T2217. Fixes two issues:
# The "task created" email didn't include the task description, but should.
# We were treaging the "status" event as the "create", but that's kind of a mess. Treat the "title" event as the "create" instead. This makes initial emails say "[Created]".
Test Plan: Created some tasks, got better emails.
Reviewers: btrahan, chad
Reviewed By: chad
CC: aran
Maniphest Tasks: T2217
Differential Revision: https://secure.phabricator.com/D7115
Summary: Currently, adapters can only fail mail temporarily. Allow them to indicate a permanent failure by throwing a special exception.
Test Plan: Added and ran unit tests.
Reviewers: wez, btrahan
Reviewed By: btrahan
CC: aran
Differential Revision: https://secure.phabricator.com/D6847
Summary:
Ref T3306. This interface has a hard time balancing security/policy issues and I'm not sure what the best way forward is. Some possibilities:
# We just let you see everything from the web UI.
- This makes debugging easier.
- Anyone who can see this stuff can trivially take over any user's account with five seconds of work and no technical expertise (reset their password from the web UI, then go read the email and click the link).
# We let you see everything, but only for messages you were a recipient of or author of.
- This makes it much more difficult to debug issues with mailing lists.
- But maybe we could just say mailing list recipients are "public", or define some other ruleset.
- Generally this gets privacy and ease of use right.
# We could move the whole thing to the CLI.
- Makes the UI/UX way worse.
# We could strike an awkward balance between concerns, as we do now.
- We expose //who// sent and received messages, but not the content of the messages. This doesn't feel great.
I'm inclined to probably go with (2) and figure something out for mailing lists?
Anyway, irrespective of that this should generally make things more clear, and improves the code a lot if nothing else.
Test Plan:
{F49546}
- Looked at a bunch of mail.
- Sent mail from different apps.
- Checked that recipients seem correct.
Reviewers: btrahan, chad
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T3306
Differential Revision: https://secure.phabricator.com/D6413
Summary: At the global level, truncate emails at a user-configured size.
Test Plan: Untested, as I could not get PHP to send emails on my box, but if you can this should be very easy to test. Just set the max size to something like .001 kilobytes and make sure it does the right thing.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin, AnhNhan
Maniphest Tasks: T1392
Differential Revision: https://secure.phabricator.com/D6118
Summary:
Moves all remaining mail handling into ReplyHandlers.
Farewell, `getPhabricatorToInformation()`! You were a bad method and no one liked you.
Ref T1205.
Test Plan:
- Used test console to send mail to Revisions, Tasks, Conpherences and Commits (these all actually work).
- Used test console to send mail to Requests, Macros, Questions and Mocks (these accept the mail but don't do anything with it, but didn't do anything before either).
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1205
Differential Revision: https://secure.phabricator.com/D5953
Summary: Ref T1205. Moves the handling logic for these email types to reply handlers.
Test Plan: Used test form to send conpherence and maniphest mail.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1205
Differential Revision: https://secure.phabricator.com/D5945
Summary:
Ref T1205. Finally able to delete a big chunk of this nastiness.
Make MailReceivers responsible for validating senders. For object creation receivers (bugs, conpherences) this just means that users must not be disabled. For other receivers the senders must be able to see the objects, have the right hashes, etc., according to policy.
Test Plan: Added a bunch of test cases (everything except policy). Verified behavior via the Receive test console.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1205
Differential Revision: https://secure.phabricator.com/D5943
Summary: Copies sender identification logic into MailReceivers and makes it basically sane. The mess we run into after this try/catch is terrifying so I'm avoiding actually getting rid of any of it quite yet. Ref T1205.
Test Plan: Added a bit of test coverage. Used Receiver test console to verify some additional behaviors.
Reviewers: btrahan
Reviewed By: btrahan
CC: Afaque_Hussain, aran
Maniphest Tasks: T1205
Differential Revision: https://secure.phabricator.com/D5931
Summary: Adding Email reply support for external users.
Test Plan: Please let me know if I have approached it correctly. Had few doubts. Will proceed after your comments :)
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin, AnhNhan, jennis.mekwan3
Maniphest Tasks: T1205
Differential Revision: https://secure.phabricator.com/D5912
