phpbb/phpbb3 — pull request #753 by Senky (2012-04-15 18:12:41+00:00)
Title: [ticket/10161] all "e-mail" strings in language files changed to "email"

according to Oleg's comment:
email is preferred by RFCs and probably the way of the future

http://tracker.phpbb.com/browse/PHPBB3-10161

PHPBB3-10161