With macOS Monterey in 2021, Apple launched a MailKit framework that builders can use to construct trendy and safe extensions for the Mail app on the Mac. Extensions could be created to dam content material, carry out message actions, enhance safety, and extra.
In flip, Apple stated legacy Mail app plug-ins would cease functioning in a future macOS launch, and it seems that time has now come. AltStore as we speak stated it confirmed with Apple throughout WWDC final week that plug-ins are usually not supported on macOS Sonoma, and that MailKit-based extensions are the one supported answer going ahead.
PSA: Confirmed in WWDC labs that legacy Mail plug-ins are NOT supported on macOS Sonoma. MailKit-based extensions are the one supported methodology going ahead.
AltServer’s Mail plug-in will now not work when you replace, however we’re engaged on a brand new methodology we hope to launch quickly.
— AltStore.io (@altstoreio) June 14, 2023
Whereas MailKit extensions are safer, they’ve extra restricted performance in comparison with legacy plug-ins, so not all plug-ins might dwell on as extensions.
Legacy plug-ins can’t be opened within the Mail app as of the primary beta model of macOS Sonoma. The replace shall be launched to the general public later this yr.
(Thanks, @aaronp613!)
