Thunderbird Filter action policy
When assigning multiple actions to a email filter, what is the policy if one of the actions fails? Does it continue to try the next action, or does the filter stop? For example, I have a filter configured to match all emails from user@company.com, and the first action is to forward it to myself@different.address.com, and then delete the email. If the forward fails because it can't reach the Outgoing SMTP server, will it skip that action and proceed to delete the email, or will it stop when the forward action fails?
Opaite Mbohovái (1)
You could experiment with a test filter and message and see what exactly happens. Send yourself the test message and use its subject as the matching criteria. To make the smtp server unreachable, temporarily change its port then run the test filter. See what happens. Look at the filter log to see what action took place.