xdg-email is currently being fixed and refactored upstream. See: https://gitlab.freedesktop.org/xdg/xdg-utils/-/merge_requests/153
This will likely be resolved, or at least the behavior will change, in the upcoming xdg-utils 1.3.0 release. https://gitlab.freedesktop.org/xdg/xdg-utils/-/work_items/286
