<tr>
<th> Firefox </th> <th>Thunderbird </th> <th>SeaMonkey</th>
</tr>
<tr>
<td>3.16.3</td> <td><b>{{bug|1021967}}</b>: {{bug|936304}}, {{bug|986005}}, {{bug|1013572}}, {{bug|1017262}}, {{bug|1017295}}, {{bug|1020729}}, {{bug|1021039}}, {{bug|1021054}}</td> <td>33?</td> <td>TBD</td> <td>TBD</td>
</tr>