Rated 3 out of 5 stars

115+ (SuperNova) I have to disable and re-enable the extension for the button to show up

Rated 5 out of 5 stars

Super addons, but doesn't work at 105.6.0 (64-bit)

This review is for a previous version of the add-on (1.5). 

Rated 5 out of 5 stars

Useful. It should be a default function of Thunderbird.

Note: You might find it slow to restart if you have several functions happen on shutdown, such as empty trash, empty cache, and so on.

This review is for a previous version of the add-on (1.5). 

Rated 5 out of 5 stars

Working great for me (Thunderbird v91.0.2). Once a day, before heading to the bathroom, I'll press the restart button, and when I get back, it'll be done with the restart process.

This review is for a previous version of the add-on (1.2). 

Rated 1 out of 5 stars

doesn't work at 78.11.0 (64-bit)
I just can't find that button anywhere

This review is for a previous version of the add-on (1.0). 

Rated 5 out of 5 stars

Very convenient. Developers should have it included.

This review is for a previous version of the add-on (1.0). 

Rated 4 out of 5 stars

Does exactly what it says.

This review is for a previous version of the add-on (1.0). 

Rated 5 out of 5 stars

Works perfectly fine on TB 78.4
Once installed, it automatically places a restart button on the Mail Toolbar:
https://i.imgur.com/n8HDCqL.png

This review is for a previous version of the add-on (1.0). 

Rated 1 out of 5 stars

Does not work with Tb 78.4.0.

This review is for a previous version of the add-on (1.0). 

Rated 4 out of 5 stars

Works with Thunderbird 78.4.0 (64 bits).
The icon disappears by itself if it is placed on the tabs line.

This review is for a previous version of the add-on (1.0). 

Rated 1 out of 5 stars

When I used Restart Button for the first time, all my other add-ons were disabled.

Responding to developer:
It happened immediately after I pressed the restart button. Additionally, Thunderbird started not fully closing anymore. Some small part of it remained in the background (Process Explorer revealed that) and when I tried to launch it again, the system warned that "Thunderbird is still running". I am using Thunderbird 82 beta 1. Fortunately, I had backups of my profile and all is well again.

This review is for a previous version of the add-on (1.0). 

What makes you think Restart Button caused that?

The current beta versions (82.x) are extremely buggy, your problem has most likely nothing to do with the Restart Button. Thanks for responding.

Rated 5 out of 5 stars

works fine !W

This review is for a previous version of the add-on (1.0).