---
At some point, this should probably also be added to the email view page,
as well as to Calendar and Contacts (but not the Settings page).

It may be good to do that with some refactoring.
 themes/alps/assets/style.css | 7 +++++--
 themes/alps/mailbox.html     | 3 ++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/themes/alps/assets/style.css b/themes/alps/assets/style.css
index d431f06..a524759 100644
--- a/themes/alps/assets/style.css
+++ b/themes/alps/assets/style.css
@@ -132,11 +132,14 @@ aside {
   transition: max-width .2s ease-in-out;
 }
 input.menuToggler { display: none; }
+label[for=asideToggle] { width: 0; transition: width .2s linear; }
 @media only screen and (max-width: 767px) {
-  /* TODO: Make this accessible */
   input.menuToggler:not(:checked) ~ aside.autohide { max-width: 0; }
-  input.menuToggler { display: block; }
+  label[for=asideToggle]:after { content: "\2192"; }
+  input.menuToggler:checked ~ aside.autohide ~ label:after { content: "\2190"; }
+  label[for=asideToggle]{ width: 130px; background-color: #f6f6f6; }
 }
+
 aside a { width: 100%; display: block; padding: 0.4rem 0 0.4rem 0.5rem; }
 aside a.active { font-weight: bold; color: black; text-decoration: none; }
 aside img { display: block; }
diff --git a/themes/alps/mailbox.html b/themes/alps/mailbox.html
index b52a635..0d9e8ab 100644
--- a/themes/alps/mailbox.html
+++ b/themes/alps/mailbox.html
@@ -2,7 +2,7 @@
 {{template "nav.html" .}}
 
 <div class="page-wrap">
-  <input type="checkbox" class="menuToggler">
+  <input type="checkbox" class="menuToggler" id="asideToggle">
   <aside class='autohide'>
     <!-- the logo image, dimensions 200x32 may be present or not -->
     <a href="/compose" class="new">Compose&nbsp;Mail</a>
@@ -25,6 +25,7 @@
       </a>
     {{end}}
   </aside>
+  <label for="asideToggle"></label>
 
   <div class="container">
     <form id="messages-form" method="post"></form>
-- 
2.27.0

Thanks for sending patches, and sorry for the delay. However, I'm not
sure this is the direction we want to go for for the mobile view. Would
need to discuss with Migadu about it.

I think a good first step would be to open a ticket on the issue
tracker.