[fix] SMTP error caching?
(I also posted this to K9 in case the issue is on their end: https://github.com/thunderbird/thunderbird-android/issues/8124)
I created a new account with https://github.com/forwardemail/forwardemail.net and added it to K9.
I went to forward an email and received this message:
(This message was expected as they manually approve SMTP access for new accounts)
However, even after SMTP was approved and I could send other emails (including via K9), I would still receive this error message on the original email I tried to send via K9 before SMTP was approved.
Manually sending the email would still receive the same error for that original email.
However, when I moved the email from outbox to drafts, and then sent it again it went through.