Postbox having '+' sign in address doesn't work
Example: [email protected]
Link parameters in the frontend.template.php should be encoded using rawurlencode function.
- &address=$user->address
+ &address=rawurlencode($user->address)
can not reproduce, works for me. I can receive and display messages.
Please provide more information.

Yes, you can see the messages, but can't manipulate.
- New emails won't appear without page reload
- Click on "delete" button causes an error.
@synox could you reproduce?
No time at the moment. Can you provide a PR?
No time as well :(
Can confirm this issue. In the frontend.template.php we need to rawurlencode the user adress and inside the router.php to rawurldecode. Otherwise we get issues on email adresses which contains a + or - (when download or delete them).