What I want to achieve is to sync my RSS feed …
- on my Thunderbird at work
- on my thunderbird at home
- on my iPhone
I'm sure a lot of people do have the same problem. How can I do this?
What you need is a Server / cloud where all the read/unread status are saved. I do not know a tool / service for that kind of sync. Maybe you trust google then use reader.google.com.
Else you maybe happy using a rss to imap deskop app / server app / service. All your devices do not need a special tool - just a mail client for your imap account.
I use feed2imap for that.
For now, you have to wait until the Sync feature is implemented (if ever). Watch bug https://bugzilla.mozilla.org/show_bug.cgi?id=446444 .