@alveox If you don’t see an #accepted tag and a link to a PR, you can assume no “progress” yet. There a literally hundreds of things to fix and improve, nearly all of them Very Very Urgent in someone’s eyes, but Mailspring development is all done in free time.
Please read: About the Sync Issues category
Voting on an issue will help raise its priority, but we cannot realistically make promises about when we can work on something, as much as we wish we could!