Transport

A transport is the object a backend opens, and the only code that communicates with a mail service.

Usage

Source

Transport()

A third-party backend writes a transport and nothing else. Both methods take positional-only arguments, so submit(self, sub) still matches.

Methods

Name	Description
close()	Close the link. Connection.close suppresses any error this raises.
submit()	Submit submission to the mail service.

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close()

Close the link. Connection.close suppresses any error this raises.

Usage

Source

close()

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submit()

Submit submission to the mail service.

Usage

Source

submit(submission)

Map a native failure onto one EpistoleError subclass, and raise it with from and with backend unset. Before writing anything, raise RejectedError with no __cause__ for a message this transport cannot carry. Never raise RecipientsRefusedError or build a SendResult, because Connection.send does both. See ADR-0004 and ADR-0015.

Returns

Each refused recipient’s refusal, keyed by addr-spec. It is empty when the service refused none.