I-Thunderbird Isithangami Sokwesekwa

I am running Thunderbird 115.10.1 on an up-to-date Windows 11 machine. I have 2 email accounts (VirginMedia and Gmai)l. When I look at the drop-down list from the top-level folders on these accounts the VirginMedia account does not offer "New Folder", but the Gmail account does. I can create new folders via the VirginMedia webmail, but not via Thunderbird. This is a problem which I have had for some months, coping with it by resorting to webmail.

When I activate a quick filter (like "Show only unread"), a count of the number of messages is added to the right end of the filter bar. This means all the buttons move to the left, so I have to move the cursor toggle it off again. This is incredibly annoying and unintuitive.

Is there a way to modify this behavior so that toggle buttons don't move when they're pressed?

Hello. I'm curious if Thunderbird supports GReader or Fever API for connecting to external aggregator like FreshRSS or TT-RSS?

Examples of RSS Readers that support this are Newsflash, RSSGuard, so I'm curious if Thunderbird supports being just a rss client for an external rss aggregator?

Reason being - I read RSS on multiple devices, plus I keep my Thunderbird closed most times. I only open it when I want to read email or rss news. So I noticed that it sometimes misses some rss feeds when my laptop is closed (this is normal - more news get published while I'm not parsing them). That's why I have an external aggregator collect it and keep it all for me and I just access it with my other devices.

Can thunderbird do this? Thanks

Windows 11; Thunderbird 115.10.1

I prefer to see only new messages in my Inbox. To that end, I've chosen the icon that says "Show only unread messages;" but it will not stay chosen. Every time I leave TB and come back I have to chose the icon again or see all the messages I've seen and reacted to before.

Is there a way to make the choice to see only unread messages and have it stay in use?