In reply to #8 (comment)

For me at least it doesn't seem to work.

@chiffon-rouge Could you please elaborate?

Do you get any error messages? Does the GPG plugin in Apple Mail not load? Is the trial period check not gone?

I'm sorry, my reply was pretty brief I guess. I used the compiled library, which doesn't change anything if used. I still have the "decrypt only" respectively trail version of GPG Mail. I reinstalled GPG Suite for testing and I have followed all instructions, including restarting.

I'm sorry, my reply was pretty brief I guess. I used the compiled library, which doesn't change anything if used. I still have the "decrypt only" respectively trail version of GPG Mail. I reinstalled GPG Suite for testing and I have followed all instructions, including restarting.

This is exactly what I did, and I get the same result. I followed the instructions on the main site and restarted the service and my computer.
Still "Decrypt only - Trial expired".

Edit
I build your source and copied org.gpgtools.Libmacgpg to the destination, as explained. Still trial version.

GPG Mail modified the DRM code for 2019.2 and later. More modifications than just the library are necessary now. Try https://github.com/GpgMailNoActivation/GpgMailNoActivation/pull/7.