Every column has to be in a row, and every row has to be in a container (except
where a row is nested directly within a column).
This also includes a change to index.html that pushes the footer to the bottom
of the page on those where it otherwise wouldn't be.
For now use the command-line tools/mail.py if you need it.
see #200
Revert "Changed incomming-email-input to type text"
This reverts commit 9631fab7b2.