Rated 5 out of 5 stars

Installing the Dictionary was the Solution! Now it works without any Problem! Thanks!

This review is for a previous version of the add-on (71.0). 

Rated 1 out of 5 stars

V. 71.0 dosn't work on 91.03! I'm not able to send a mail, when Cardbook ist activated.

This review is for a previous version of the add-on (71.0). 

the solution is explained here : https://gitlab.com/CardBook/CardBook/-/issues/1302#note_651408921

add a dictionary in the compose window in your Check Spelling button