Cannot send e-mails to addresses having plus signs ("+") from the composer

[rishabh]

This is an issue I ran into while sending e-mails from Discourse.

Considering that an e-mail with a +tag is considered valid, Plus signs ("+") in email addresses, does it make sense to fix this?

[dan (Dan Ungureanu)]

Fixed with:

https://github.com/discourse/discourse/pull/8317