medmunds 06c7077e37 Fix: flag extra_headers["To"] as unsupported ...

Django's SMTP EmailBackend allows spoofing the To header by setting
`message.extra_headers["To"]`` different from `message.to`.

No current Anymail ESP supports this. Treat extra_headers["To"] as
an unsupported ESP feature, to flag attempts to use it.

Also document Anymail's special header handling that replicates
Django's SMTP EmailBackend behavior.

2018-02-27 13:43:58 -08:00

..

anymail_additions.rst

Feature: Add envelope_sender

2018-02-26 18:42:19 -08:00

django_email.rst

Fix: flag extra_headers["To"] as unsupported

2018-02-27 13:43:58 -08:00

exceptions.rst

Docs: add info on handling transient ESP errors

2017-09-08 14:27:49 -07:00

index.rst

Add pre_send and post_send signals

2016-05-12 21:18:04 -07:00

signals.rst

Docs: missed param in pre_send signature

2016-05-13 12:17:27 -07:00

templates.rst

Add ESP templates, batch send and merge

2016-05-06 12:27:11 -07:00

tracking.rst

Webhooks: default tracking event tags=[], metadata={}

2017-06-30 16:56:36 -07:00