Buttondown Documentation
A temporary failure (also called a "soft bounce") is when delivery is temporarily unavailable.
There are a number of different reasons that you may see a temporary failure: a mail server going down briefly, a subscriber's inbox being full, or a message has been blocked by spam filters. We've listed a couple of the more esoteric ones below:
Reason | Description |
|---|---|
Message delayed | The message was delayed because the recipient's mail server or our mail server was busy. |
Soft bounce | The recipient's mail server could not accept the message at the moment, but it may accept it later. |
In general, Buttondown will retry messages that have temporarily failed; you don't need to do anything.