Been using MS for a while now, opened it up today and found a crazy UI problem that I googled and couldn’t find anything recent? My UI just gets blurrier and blurrier as I use the app. Deleted like 50 emails now I can’t read anything at all. happens with the whole UI not just the sidebar i just didnt wanna post my actual emails here.
This sounds like a display scaling/DPI issue. Things to try:
- Launch with
--force-device-scale-factor=1to override automatic scaling - On Windows: right-click Mailspring.exe > Properties > Compatibility > Change high DPI settings > try “System (Enhanced)”
Could you share your OS, display resolution, and whether you use custom display scaling? That would help us understand if it’s a specific Electron rendering issue.

