[bilalhusain]

- login (use something like http://retentionbooster.com/site/adduser?email=a43abe&passwo...)

- choosing a good transactional email service might be helpful.

[rbinv]

That's a pretty good idea (as long as these are considered "transactional" by the provider).

edit: Can confirm the authentication behavior now.

edit 2: In fact, the username is printed without any escaping.