How to view previous Firefox notifications?

I got a message notification from Firefox, but it wasn't on the screen for long. I'd like to read what it said again. How do I view previous notifications?

Solution 1:

The Firefox extension Service Worker Control has a companion extension called Service Worker Control - Push Notification History.

Using a pair of add-ons to achieve this probably isn't ideal, but they're both tiny at 9.48KB and 22.33KB respectively, and they do work smoothly. One was last updated a month ago, the other 2 months ago.

Method

The best way to install add-ons is always from within the Firefox browser itself, where you can select the 'Add-ons' option from the Firefox menu, which opens an 'Add-ons Manger' tab. Search for them by name at the top of the tab and, once located in search results, add-ons can be installed by clicking the blue 'Add to Firefox' button, followed by clicking 'Allow' on the subsequent security warning.

For these particular add-ons further configuration is necessary: within the Add-ons Manager click the three dots to the right of the Service Worker Control add-on, select Options, and then check the 'Enable push notification history' checkbox. A list of push notifications will now be available in the Firefox toolbar, and also from within the Service Worker Control addon Options.