Doesn't work. Initial login/setup on desktop Firefox doesn't work. Error in browser console when trying submit email for login:

"Uncaught Error: error_permission" at onboarding-panel.js:9330:99

Extension works good for me once you set It up It will appear to not work but If you click on the mail.com extension It will show your account & you have the option to set up another.

Doesn't work anymore, can't login.

Doesn't work anymore with there own domains, gmail.com and outlook.com works for this mail check extension but not their own like email.com, mail.com, gmx.com; what a fucking joke. I contacted the developer several times, he never responded even the support said to use another browser, contacted them through email twitter and they fucking never responded. I am a paying customer to their service, recently switched to firefox and this is how they treat us

If you check the necessary permissions, you will realize that there is a lot of telemetry and sharing of your browsing data.

Not working, simple as that.

Used to work, now it doesn't. Can't log in. Don't waste your time installing it.

What happened? Worked fine for ages, then login doesn't work. Just like the other reviewers, you can't log in when it is installed in Firefox. The company still "advertises" the extension as compatible. Yeah, no. I use their apps for Android and iOS which work fine. Fortunately, this is not my primary email. If it was, I would be very unhappy.

Used this a ton on other browsers and it worked just fine. Was an easy and convenient way to view emails from all of my accounts. I switched to Firefox and the extension no longer lets me sign in to any my accounts, freezing completely after I input my email and never prompting me for a password. Very disappointing.

too much spam in inbox, too much snooping and data accessing

Can no longer sign in to this extension for whatever reason. Pointless now.

never loads password input for additional account login

Does not provide a means of entering password to log in when used in Firefox but works great in Brave.

I've used gmx.us for a few years now. I've even replaced gmail with it. Up until a week ago, I've had no problems, but now mail check is saying my browser is not compatible (Firefox which is up to date). What happened?

waardeloos. geen plaats voor wachtwoord als ik mail account wil toevoegen

Please FIX this app! It is not functioning anymore, unlike a few months ago when it worked smoothly after initial login. Now, the system hangs indefinitely right after installation and user login. WHY DID THIS HAPPEN???

If you are using Firefox this addon is useless. Even tech support said to use another browser. Makes me wonder about Mail.com.