<table class="table">
<tr>
<td><?=_Email Addresses?> </td>
- <td><input class="form-control" type="text" name="newemail" value=""></td>
+ <td><input class="form-control" type="text" name="newemail" value="" required></td>
</tr>
<tr>
<td colspan="2"><input type="submit" name="addmail" value="<?=_I own or am authorised to control this email address?>"></td>