Use IMAP instead of SMTP to store emails

[Metabaron1]

Hi
I'd like your opinion about my problem I'm tring to imagine a solution.
I'm self hosting and I use my ISP mailbox to store my emails. But there is a too much aggressive antispam filter that bounces some emails, whenever I use authenticated or not SMTP relay host. The only way I can imagine to bypass this antispam is using IMAP instead of SMTP...
So do you think that there a way to send the emails using IMAP instead of SMTP? From Postfix?
Thanks

Edit: but finally I suppose Simplelogin would not be compatible with email tranfered with IMAP ...

[timotree]

Someone else may be able to provide a more in-depth explanation but IMAP is a protocol designed for mail retrieval, not sending. SMTP is the protocol for sending.

[Metabaron1]

@timotree
Yes, but I was think about something like enabling Postfix storage (or some local maibox for my domain) for email from sl-email module, and enabling IMAP between this local storage and my ISP mailbox.

But this will break Simplelogin I think

[nguyenkims]

I wonder if maybe instead of sending emails with Postfix, upload the email directly into your ISP mailbox can solve this? This can be done by overriding this line

app/email_handler.py

Line 840 in e4ed192

sl_sendmail(