How can mailtrack extension be installed to check if an email is opened by receiving person?
Hi Scott, as far as I know, Mailtrack (https://mailtrack.io/en/) has not released an extension for Firefox, only for Chrome.
There are other services to embed tracking pixels in your messages, but I don't know whether those are available for Firefox, either.
We need mailtrack for Firefox. Lot of users use Firefox instead Chrome etc. Firefox is the best