I see that the issue referenced by @Phylu is closed, and that release 1.10.0 says that “[Upgrading to Electon 14] will allow Mailspring to ship Universal builds for MacOS ARM machines”, but when I download the latest release (1.10.3), it’s clearly still running as an Intel App via Rosetta 2.
Perhaps I’m mistaken, and if so, where should I be looking to download the correct universal binary?
FWIW: Mac M1Max, Monterey 12.3.1