Use the preview pane (like Mail Summaries)

[ErikKrause]

I really like the display of the (now dead) Mail Summaries extension in the preview pane, both the account summaries and the folder summaries.
Would something like that be possible? Especially the Most Frequent Tags display in folder summaries, where tagged mails are displayed as colored dots, each of which links to the respective mail (important to get a quick overview of what needs to be done):

The Folder Space Usage in the Account Summary is also indispensable.

[devmount]

Thank you Erik for this great suggestion! As far as I know, it's still not possible for add-ons that are based on the webextension APIs to show content in the preview pane (and surely one of the reasons, the mentioned Mail Summaries extensions is dead now).

As soon as this gets implemented in Thunderbird, I'll figure out which stats and summaries to show in the preview pane.

[ErikKrause]

Meanwhile, I found this: https://github.com/jimporter/mail-summaries.

[devmount]

It's good somebody's working on it. For ThirdStats I'd rather go without experiment API's 🤷🏻

[koobs]

It's good somebody's working on it. For ThirdStats I'd rather go without experiment API's 🤷🏻

Note that using experiment API's can help Thunderbird teams upstream determine needs/priorities for future extension API support, particularly as they level up telemetry.

There are vanishingly few ways for Web Extension Developers and Users to influence decisions and this (actual use/consumption of API's adding user and ecosystem value) is one of them.

[devmount]

Thank you @koobs - I'm completely with you here. The reason for my decision was that releasing a new version on ATN becomes a lot more complicated when using experiment API's. The new version will be manually checked and it takes several days (or weeks? depending on the queue size) until it get's approved. In a time where I was releasing a new ThirdStats version every month this was not usable for me.

Honestly, it probably wouldn't be a problem now but I hope that my life allows me to come back to a more regular release cycle...

[koobs]

Thank you @koobs - I'm completely with you here. The reason for my decision was that releasing a new version on ATN becomes a lot more complicated when using experiment API's. The new version will be manually checked and it takes several days (or weeks? depending on the queue size) until it get's approved.

Totally understand, just thought it was worth mentioning (regardless of this feature request specifically)