* **Postal:** Require Python 3.9 or later for Postal tracking webhook support.
  (Postal's signature verification uses the "cryptography" package, which is no
  longer reliably installable with Python 3.8.)

Fixes
~~~~~

* **Mailjet:** Avoid a Mailjet API error when sending an inline image without a
  filename. (Anymail now substitutes ``"attachment"`` for the missing filename.)
  (Thanks to `@chickahoona`_ for reporting the issue.)

* **Mailjet:** Fix a JSON parsing error on Mailjet 429 "too many requests" API
  responses. (Thanks to `@rodrigondec`_ for reporting the issue.)

* **Postmark:** Fix a parsing error when Postmark indicates a sent message has
  been delayed, which can occur if your message stream is paused or throttled or
  when Postmark is experiencing service issues. These messages will now report
  "queued" in the ``anymail_status`` (rather than throwing an error or reporting
  "sent"). (Thanks to `@jmduke`_ for reporting the issue.)

* **Postmark:** Fix an error in inbound handling with long email address display
  names that include non-ASCII characters.

* **SendGrid:** Improve handling of non-string values in ``merge_data`` when using
  legacy templates or inline merge fields. To avoid a confusing SendGrid API error
  message, Anymail now converts numeric merge data values to strings, but will raise
  an AnymailSerializationError for other non-string data in SendGrid substitutions.
  (SendGrid's newer *dynamic* transactional templates do not have this limitation.)
  (Thanks to `@PlusAsh`_ for reporting the issue.)

Other
~~~~~

* Officially support Django 5.2.

* **Resend:** Remove Anymail's workaround for an earlier Resend API bug with
  punctuation in address display names. Resend has fixed the bug.

* **SendGrid:** Remove Anymail's workaround for an earlier SendGrid API bug with
  punctuation in address display names. SendGrid has fixed the bug.