Mailspring 1.10.3 from snap on Ubuntu 22.40 with Zenity installed.
Notifications are enabled but they doesn’t work at all.
I had this issue as well on Mailspring 1.16.0 with Zenity 4.2.0 installed. I have Mailspring 1.16.0 installed with openSUSE Tumbleweed’s Distrobox image inside Distrobox container (Podman).
Now, it’s working without issues. I tried to build Zenity from source (master branch), in which brought in many dependencies in the process. So, I can’t pinpoint which packages are necessary for the notification to work properly.
But if anyone’s interested, they can download the source, extract it, and cd to the source folder, then:
mkdir build; cd build
meson setup ..; ninja
The build would 100% fail many times. Try looking for the missing dependencies until everything say found: yes. After that, you should have a working notification.
I reinstall Mailspring again, in openSUSE container like before. Now, I can pinpoint the package that I need to have a fully working notification.
By installing zenity, there will be only the notification sound, but not the badge. I need to install libwebkitgtk-6_0-4 to have notification badge.
If you’re installing in a container like me, here are all the packages require to have Mailspring working:
sudo zypper install zenity mozilla-nspr mozilla-nss libcanberra-gtk3-module libwebkitgtk-6_0-4