Rated 3 out of 5 stars

The extension works when the KeePassXC database is unlocked, but whenever Thunderbird refreshes an account and the database is locked, it will open a new browser page asking for OAuth2 confirmation for each account.

As the access tokens for oauth are stored in the KeePassXC database Thunderbird has no way to know these when the database is locked. This behaviour is intended and a security feature.

Rated 5 out of 5 stars

amazing, help to protect your thunderbird desktop application easily

This review is for a previous version of the add-on (1.7).  This user has a previous review of this add-on.

Rated 5 out of 5 stars

An essential, excellent add-on. A big thank you to the developer for his ongoing work, keeping this updated and adjusted to the changes that newer Thunderbird versions enforce.

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

Rated 5 out of 5 stars

Just what I needed.

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

Rated 5 out of 5 stars

Perfect. Thanx.

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

Rated 3 out of 5 stars

What is this for? There's no such plugin for Keepass called "KeepassXC"

This review is for a previous version of the add-on (1.0.3). 

It's for the password manager https://keepassxc.org/
If you are using KeePass2 you can use https://keepass.info/plugins.html#keepassnatmsg

Rated 5 out of 5 stars

A great addon for using passwords stored in KeepassXC directly in Thunderbird without the need to copy & paste them every time. It is as good as the KeepassXC extension in Firefox.

This review is for a previous version of the add-on (0.9).