Rated 5 out of 5 stars

For version 1.0.5: Generally, it's a nice tool to slow down users who tend to click too quickly on links in e-mails.

For corporate deployment it would be good to to have a way to define, distribute (and update) a corporate-wide list of trusted domains.

Some more ideas:

* It would also be good to distinguish http and https links and clearly it when it's https
* Special markup if sender domain and link domain match, e.g. a link to amazon.com in an e-mail from amazon.com marked differently to a link to amazon.example.com

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