Rated 5 out of 5 stars

I really liked this addon, big thanks to the developer!
To (always) show the quota on TB 78+, open the Thunderbird Config Editor (First page in settings, just scroll down or maybe see here https://support.mozilla.org/en-US/kb/config-editor) and search for “mail.quota.mainwindow_threshold.show” and set it to 0.
Now you’ll see your quota when you click on an account on the right side of the status bar.

Rated 4 out of 5 stars

Well, since the extension doesn't work in TB 78, it's good to know that there's built in functionality in TB for this. The quota is displayed in the status bar. But, by default, only if the usage is more than 75%. If you want to see it all the time, you need modify the option: mail.quota.mainwindow_threshold.show
See https://bugzilla.mozilla.org/show_bug.cgi?id=427066#c1

Rated 1 out of 5 stars

Correction: it doesn't work with 78.4, I saw TB's own quota display. So it seems, I don't need it anymore...

Rated 5 out of 5 stars

simple, very helpful and works fine!

Rated 5 out of 5 stars

Yeeees! It works again!

This user has a previous review of this add-on.

Rated 1 out of 5 stars

The same thing, dont see any customize option or button.

Rated 1 out of 5 stars

I'm not seeing a quota bar appearing anywhere. I can't find any option anywhere in the menu, account settings, or TB options, to enable it either. I also can't find how to access the alleged "ImapQuota Settings" window from the screenshot.

As far as I'm concerned, this addons does absolutely nothing, so far.

Rated 4 out of 5 stars

@pippo_franco: if you rightclick on any of your imap's folders, select "properties", and then, in the small thunderbird-native popup window, go to the most-right tab "quota" (or perhaps "contingent" or similar)...: What does the small thunderbird's popup window show there? Is it the server's disk quota (again), or your mailbox' quota?

If it's the server's quota too, there, then you discovered a bug that needs to be discussed with the helpdesk/admin of the server. Because any tool that uses imap-protocol's way of retrieving the capacity and its utilization (which is given to it by the imap server) would get the same wrong data.

@ options button / TB60: enable tb's menu bar and select: Extras >> add-on-SETTINGS >> IMAP Quota (Free Space)

Rating: Currently/Still using TB69 with IMAP Quota (Free Space) v1.2, which is quite unstable. Configured limits are 0/70/90, so there should always be data shown. Sometimes it indeed shows the small bar with data, sometimes not, sometimes on the 2nd/third/etc. attempt. Sometimes situation improves temporarily after rebooting TB.

Good: Config options, display fashion (small bar with distinguished colors and percentual values), if bar is clicked then it opens TB's quota tab where the most detailed data is available.

Rated 4 out of 5 stars

UPDATE: @revisor so if I follow your directions and go to the folder properties under the 'quota' tab you will see "cPanel Account" as quota reading... which , as you said ... it's likely to be a Hosting Provider setting issue.

btw I'm running 68.5.0 (64-bit) on a mac and there seem to be no other issues

ALMOST!! it is actually picking up my overall server disk usage instead then the assigned mail quota... O_o

AFTER DEV RESPONSE:
Disk quota isn’t the same as my email quota as I limited email quota to 500mb... the account is a hosting of several domains and the emails Quotas are managed to contain disk usage.

Rated 4 out of 5 stars

In the TB 60, the options button disappeared, which allowed setting that the bar was showing all the time

Rated 5 out of 5 stars

In the TB 60, the options button disappeared, which allowed setting that the bar was showing all the time

This review is for a previous version of the add-on (1.2). 

Rated 5 out of 5 stars

Very useful add-on which also works in TB 60. Thanks a lot!

This review is for a previous version of the add-on (1.2). 

Rated 5 out of 5 stars

Avere sempre sott'occhio la soglia occupata dai messaggi per evitare di correre ai ripari quando ormai se ne ha troppi per poter intervenire senza rivolgersi all'assistenza è molto importante.

This review is for a previous version of the add-on (1.1.2).