occasionally Mailspring can not send messages due to a connection blip. where, if anywhere, are these unsent messages stored? seems like if a message is not sent i have to rewrite the message completely
If a message fails to send (e.g. due to a network error), Mailspring keeps the draft in the Drafts folder — it won’t be lost. You can find it there and try resending. Mailspring doesn’t have a traditional “Outbox” folder for queued/failed messages, but anything that didn’t go through will remain as a draft with the content intact. If you’re seeing messages disappear after a send failure without ending up in Drafts, that would be a bug worth reporting with your OS and Mailspring version.