Can Firefox read MHTML files?

I have-you could say-a nagging issue with Firefox web browser.When Win7 was the default OS,Internet Explorer was the default browser.I didn’t see much of a problem back then but now,with Firefox as the default browser for any linux distro, i came to realize that a lot of files that i saved over the years come in a format that ‘the fox’ can’t read.
Recently i google for any plug-in,add-on or extension that would allow firefox to read those same files.I’ve red in some sites an extension called UnMHT but i’m having a hard time finding it.
What i would like to know is, has someone installed this extension and if it did, where can i find it.Or, as an alternative, should this extension not available for any particular reason, to install a new browser.If so, which one?
Thank you.

Not tried it as i dont have any files in that format to test

Suggestion is yes it works.

What's an MHT File and How Do You Open One?.

It looks like Chrome based browsers can open .mht files

Also, there is a ripper app which will extract the information from a .mht file

https://forum.puppylinux.com/viewtopic.php?p=51269#p51269

Have not tried it

And
There are online services that will convert mhtml to html

Last ditch method… you can open a .mht file in a text editor and hack out the info you want.

Following Paul suggestion, i went to website ‘addons.thunderbird.net’, download the extension but the thing is, it didn’t worked.Mint doesn’t allow the installation to carry on because the file"appears corrupted".
Neville posted that Chrome-based browsers can open .mht files.I’m going with that, i’m not seeing much of an inconvenience to have one more browser so, i would just that.Thanks.

I looked up UnMHT firefox extension
It says

Discontinued

Not supported since Firefox 57 (Quantum).

So Mint was right to reject it.

Thanks for the extra info I had not seen it had been discontinued thought it was still active but did not have a file to test it on

It’s a pity but in the end it doesn’t matter. I’ve searched for a chromium-based browser as a back-up browser and did the trick. It red my .mht files.So thanks for the advice.

I think you are better off without addons. There are security issues with addons and extensions.