eMail attachment from file managers(setting Default applicatons)

[ToddAndMargo]

Hi All,

Fedora 43
Xfce 4.18

I have my default eMail client set to
(settings Default Applications):

    /usr/bin/betterbird

I also told Betterbid in its setting to
make Betterbird my default eMail client.

I even rebooted.

But when I right click on a file in any of
my file manager (Thunar, Caja, Krusader),
"send to eMail" does not appear.

What am I doing wrong this time?

Yours in Confusion,
-T