I have been using Kopia since June 2021 since I first posted it on HN [1]
My use cases are very basic, but it just quite works all the time. My total backup is roughly 1TB with more than million files at multiple locations like local, remote SFTP and Amazon S3.
I like being able to extract the selected data(directory/file) from snapshot without restoring the whole snapshot.
de-duplcaition is icing on top.
The developer Jarek is very responsive on Kopia Slack as well.
Few weeks ago I tried Thunderbird with IMAP account which has ~300k emails. It was painfully slow just to load emails list and view email. Let alone navigate the folders
I want all the emails downloaded for offline search.
I guess I would give this a try again and see how it goes.
Meanwhile, I have been using eM client since a week and it is very prompt to view list, navigate folders, search and all.
With eM client, I have read people complaining about mandatory forced updates even with the paid license.
I'm using LuLu since few months and find it absolutely helpful.
When I first installed it, it required quite some efforts to consciously filter/allow traffic from/to for the apps. By the time, all regular apps were properly configured for the rules and now I see notifications for block/allow only when there is uncertain traffic going out.
I have been looking for note taking apps and shorted listed Joplin and Trilium [1].
I'm currently experimenting with Trilium since couple of days. While it looks complex at first, it seems to have a lot of extensibility which might make it "future proof" for extensive data.