xdg-email is not working with attachments
this open only a e-mail dialog without the attachment:
xdg-email --attach $HOME/.bash_history
That works fine, attachment is in the opened e-mail dialog:
thunderbird -compose attachment="file:///$HOME/.bash_history"
Seams to be also the cause for issues, that "Send as e-mail" in Nemo or other programs do not work.
see also here: https://github.com/Foundry376/Mailspring/issues/1804
My system is: Linux Mint 20 with xdg-email 1.1.3 and Thunderbird 68.10.0 (Kernel: 5.8.0-33-generic x86_64 bits: 64; Desktop: Cinnamon 4.6.7; Distro: Linux Mint 20 Ulyana; base: Ubuntu 20.04 focal)