FEAT: Plugin message hooks API (on-receive / on-send)

[andrinoff]

Is your feature request related to a problem?

Plugins can't react to message lifecycle events.

Describe the solution you'd like

Expose hooks so plugins can run on message receive/send/open and transform or annotate messages.

Describe alternatives you've considered

No extensibility for mail events.

Additional context

See plugin/ and dispatch points in fetcher/ and sender/.

[floatpanebot]

Thanks for the suggestion!

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[floatpanebot]

This has had no activity for 30 days. It will be closed in 14 days unless updated. Comment or remove the stale label to keep it open.

[floatpanebot]

Closing due to inactivity. Reopen if still relevant.