GJ notification invitation

Hi,
For invitations to join a group.
I send notification 2, PM and email.
Notifications appear like this in the email:

"Hello usrename, you are invited to join group name . Stays Click here to join this group!"

But if the user is not logged in, it does not work.
Is there a solution for it bypassed ?

If he is logged, it works whith email or PM and it is automatically add in the group.

Thanks

Is there a solution for it bypassed ?

No, the user has to login to use the Join link. This is unlikely to change.