Hey folks, thanks for your patience - it looks like this happened because our Github Actions that build and publish the app were sharing a build cache, so the ARM64 binaries created for the node modules (like sqlite) were used for the intel build that ran immediately afterward.
I’m going to ship a 1.15.1 so that the app will auto-update (thankfully it should auto-update even if the main window is crashing. edit: I am attempting to verify this) and also replace the 1.15.0 binary in place to avoid anyone else receiving it.
Here is the fixed 1.15.0 build:
https://github.com/Foundry376/Mailspring/releases/download/1.15.0/Mailspring.zip