Remove maximum number of retries for sendng message

Checklist

• I have used the search function to see if someone else has already submitted the same bug report.
• I will describe the problem with as much detail as possible.

App

K-9 Mail

App version

18

Where did you get the app from?

None

Android version

16

Device model

No response

Steps to reproduce

On some days I am offline at home. My phone connects to the router (Intranet), but the router is not connected to Internet, so my phone cannot send emails. I create a message in K9 with the intention to send it, once the router goes online.

K9 tries from time to time to send the message and it apparently counts how many times sending the message has not worked. If a certain threshold is reached, it does not try anymore to send the message.

Expected behavior

The threshold for maximum retries to send a message should be removed. At the same time, if a notification is shown that a message cannot be send, I have no objections to include in the notification how many times it was tried to send the message. Thus the user can take action,based on the number, .e.g. remove the message from the Outbox mailbox.

Actual behavior

K9 stops retrying to send a message, stating some threshold for retrying to send the message was reached.

Logs

No response

Start with K-9 Mail's send-retry behavior for messages held in the Outbox while the router has no Internet connection. Reproduce the offline scenario, then verify that sending continues beyond the current threshold and that any failure notification may still report the retry count.