Rated 1 out of 5 stars

I tried to install the dictionary again. This time I did not get an error message, so I clicked on 'install'. However, the language option does not show up in the email. Can you please tell me what is wrong?

This review is for a previous version of the add-on (3.1.3). 

Sorry to hear that. On my end it seems to properly install in 60.4.0 and 65 beta.
Are you sure you have spellcheck enabled in Options > Compose > Spellcheck?
You also might try to uninstall the add-on properly, restart Thunderbird, go to Hamburger menu > Add-ons > Dictionairies > top-right search on addons,thunderbird.net and type "woordenboek" and install again.

Rated 1 out of 5 stars

I get an error message saying that the dictionary is not compatible with Thunderbird 60.0. When will you have an updated version?

This review is for a previous version of the add-on (3.1.2).