Go to Plugins ▶ Authentication ▶ Manage authentication and enable 'Email based self-registration' in registerauth Logout Click login and select the option to create a new account Fill in the registration form all details and with your email address - but add whitespace at the end of your email address VERIFY: your registration form is accepted Fill in the registration form again - but this time set the email address as '<foo>@gmail.com' VERIFY: that the form doesn't allow your email address to be submitted and tells you its invalid. Go to the forgotten password form, repeat the test with an email address with spaces at the end. Verify it accepts that Go to the forgotten password form, repeat the test with '<foo>@gmail.com'. Verify it does not accept that As admin try and create a new user and repeat the same tests with the two email variations VERIFY: valid email is accepted even with whitespace VERIFY: invalid email is not accepted - and the invalid input remains in the form As a student try and edit your user profile with two email variations VERIFY: valid email is accepted even with whitespace VERIFY: invalid email is not accepted - and the invalid input remains in the form