Rated 4 out of 5 stars

I'm sorry to read the report that the developer won't be updating Slideshow. If anyone else decides to develop it further, or make a similar add-on, then I suggest including the ability to rotate an image. Many of the images I receive need a 90 degree turn. But in every other way, it's a huge convenience being able to open an image in Thunderbird.

This review is for a previous version of the add-on (1.3).