can't click on Firefox e-mail links and open the Claws-Mail compose window -- UPDATED INFO

Just noticed that my laptop which is running Mint 20.2 with
Claws-Mail 3.17.5 **does** open the compose page in Claws-Mail when I
click on an e-mail link in Firefox. 

I checked about:config in Firefox on the laptop and don't see anything
different than the settings on the desktop. Is the answer in the
different Claws-Mail versions?

Thanks.

 



Hi, everyone.

I am as certain as I can be that when I was using Mint 19.0 with
Claws-Mail 3.X I could click on an e-mail link in Firefox and it would
open the Claws-Mail compose window, automatically inserting the intended
addressee's e-mail address. (At least I think I remember this
happening.)

Now I am using Mint 20.2 with Claws-Mail 4.0.0 (flatpak). When I click
on an e-mail link in Firefox 97.0.1 the main Claws-Mail screen opens,
not the compose window. 

I have the following written in my notes from years past for setting up
Firefox email links in the about:config screen.

network.protocol-handler.expose.mailto		boolean true
nework.protocol-handler.external.mailto	boolean true
network.protocol-handler.app.mailto	claws-mail  ("string")

Is anyone able to click on an e-mail link in Firefox and get it to open
the Claws-Mail compose window with the address inserted?

Thank you.