In the diagram, the program that connects via IMAP to the MDA can also be a standalone MRA[1]. With a standalone MRA, the MUA doesn't need to know the protocol used by the MDA. It just reads the mail from a local mailbox (using formats like Maildir or mbox) where the MRA wrote it.
Does anyone know if there are MTAs that can pickup mail from a local directory to send out and MUAs that don't need to use SMTP to send out mail, but have the support to rather just write it to a directory?
I was wondering if the sending of email could also be handled by a standalone program separate from the MUA like it can be done with the receiving of mail.
Does anyone know if there are MTAs that can pickup mail from a local directory to send out and MUAs that don't need to use SMTP to send out mail, but have the support to rather just write it to a directory?
I was wondering if the sending of email could also be handled by a standalone program separate from the MUA like it can be done with the receiving of mail.
[1] https://en.wikipedia.org/wiki/Mail_retrieval_agent