Both put all your replies into email threads, reducing inbox clutter. Both are easy to use, have clean minimal interface. Both are free, full-featured email clients. (I guess new features are more important than bug fixes) If the three issues above end up getting fixed someday, I will consider going back to Mailspring (for its better aesthetics, easier development on Github and Electron, etc.). Similarities between Spark Mail & Mailspring. And I think I partly know why: there used to be several core/frequent developers, but now there is only one or two, and they seem to have other features on their minds.
But there has been no movement by the developers on any of them, as far as I can tell.
one empty line in between paragraphs), but then, only after sending, I see that the double-line-breaks has been simplified to a single line-break! (which means the paragraphs have no space between them anymore, disrupting readability!) For over a year, I had been holding out hope that the tickets/entries raised for these issues would get fixed (the first one at least, since that was the most annoying). (the two that have issues are the two most recently added) 3) The HTML/WYSIWYG editor is not completely reliable sometimes when I press enter, the editor shows two line-breaks (ie. The main issues: 1) The "unread" status of emails gets desynced frequently thus, the "unread" section keeps getting cluttered with tons of messages that have in fact been read! 2) Keeps having issues syncing mail for two of my Gmail accounts! (even after attempted re-sign-in) I suspect the Mailspring client just cannot handle more than 3 accounts without getting unstable. Please note that Mailspring Libre build isn't fully open source right now: the sync engine, MailSync, is proprietary, and while we're working on replacing it, it probably won't happen anytime soon. Venryx's Experience For a couple years I have been using Mailspring, but there are a few key annoyances that have been severe enough that I've finally switched (as of today) to Mozilla Thunderbird.