Summary:
When I tested this earlier I was incorrectly interpreting PHPMailer errors as
SES errors. This works fine as long as you get around the peculiarities of
PHPMailer.
Test Plan:
Sent email to myself, received email from a human-readable address in my mail
client.
Reviewed By: rm
Reviewers: rm, tuomaspelkonen, jungejason, aran
CC: aran, rm, epriestley
Differential Revision: 246
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
