is not displayed in Firefox

If GMX is not visible or you accidentally hid it, you can show the extension again with a few clicks.

Cause

You accidentally hid or deactivated .

Showing

  1. Right-click a button on the toolbar.
  2. Click on GMX.

    Showing/hiding MailCheck

Enabling

  1. Click the menu button and then Add-ons.

    Opening add-ons

  2. Select the Extensions category.
  3. Select the GMX entry and click Enable.
  4. Restart Firefox.