Follow-up: Is there any project for Email Client based on GTK 4?

This is a follow-up to the earlier (brief) discussion with the same title.

In the meantime, a few projects emerged:

[sorry, the system limited my post to three links]

Are these projects created with the help of LLM AIs?

Post: yes (I “wrote” it, see Readme)
Postcard: yes (see Readme)