Rated 2 out of 5 stars

This is a great idea and I'd love to give this plugin a 5 star review, but there are problems:

1. I get the javascript popup message almost every time I click to a different email. This costs too much time and makes Thunderbird unusable.

2. There is usually a long delay before I can see the labels. Sometimes they don't appear at all.

Fixing those problems would make it 4 stars for me.
To make it 5 stars I'd like to be able to add a "Gmail Labels" column (with label colours) so I can see the labels without having to preview each email to find them. We use coloured labels to organise emails and if you can't see all the labels at the same time the organisation does not work.
Nice work so far and I hope to increase my rating to 5 stars.

I'm using Thunderbird 68.7.0