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SendGrid: generate unique message_id for each batch recipient

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Closes #139
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medmunds
2019-02-23 15:01:54 -08:00
parent d2d568b6d3
commit 578bad9a57
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13
CHANGELOG.rst
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@@ -39,12 +39,23 @@ Breaking changes
code is doing something like `message.anymail_status.recipients[email.lower()]`,
you should remove the `.lower()`
* **SendGrid:** In batch sends, Anymail's SendGrid backend now assigns a separate
`message_id` for each "to" recipient, rather than sharing a single id for all
recipients. This improves accuracy of tracking and statistics (and matches the
behavior of many other ESPs).
If your code uses batch sending (merge_data with multiple to-addresses) and checks
`message.anymail_status.message_id` after sending, that value will now be a *set* of
ids. You can obtain each recipient's individual message_id with
`message.anymail_status.recipients[to_email].message_id`.
See `docs <https://anymail.readthedocs.io/en/latest/esps/sendgrid/#sendgrid-message-id>`__.
Features
~~~~~~~~
* Add new `merge_metadata` option for providing per-recipient metadata in batch
sends. Available for all supported ESPs *except* Amazon SES and SendinBlue.
See `docs <https://anymail.readthedocs.io/en/latest/sending/anymail_additions/#anymail.message.AnymailMessage.merge_metadata>`_.
See `docs <https://anymail.readthedocs.io/en/latest/sending/anymail_additions/#anymail.message.AnymailMessage.merge_metadata>`__.
(Thanks `@janneThoft`_ for the idea and SendGrid implementation.)
* **Mailjet:** Remove limitation on using `cc` or `bcc` together with `merge_data`.