Fix global SEND_DEFAULTS merging

anymail / django-anymail

Django email backends and webhooks for Amazon SES, Brevo (Sendinblue), MailerSend, Mailgun, Mailjet, Postmark, Postal, Resend, SendGrid, SparkPost, Unisender Go and more

https://anymail.dev

BSD 3-Clause "New" or "Revised" License

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Fix global SEND_DEFAULTS merging #343

Closed medmunds closed 10 months ago

medmunds commented 10 months ago

Fixes merging global SEND_DEFAULTS with message esp_extra for ESP APIs that use nested payload structures. And clarifies intent for other properties.

Fixes #338