How to Open Encrypted Messages in Thunderbird?

How do I open this in thunderbird to read it?

You should be viewing it in the browser where you’ve installed FlowCrypt.

For Thunderbird, there is a plugin called Enigmail that can be set up to work alongside FlowCrypt to view these emails, but it may require a lot of work to get it working properly.

We also plan to release a FlowCrypt plugin for Thunderbird in the future.

In general, FlowCrypt and Enigmail are compatible. If your recipients already use Thunderbird along with Enigmail for PGP encryption, you should be able to communicate with them smoothly.