A new user (#####) has registered. His account is pending your approval:

http://redmine.burst-dev.com/users?sort_key=created_on&sort_order=desc&status=2

You have received this notification because you have either subscribed to it, or are involved in it.
To change your notification preferences, please click here: http://redmine.burst-dev.com/my/account

The word "his" does not seem like a proper word to use. What if the user is female? A better choice would be to use "The" making the sentence "The account is pending your approval:"