No, for readcash.

Right now I can only mark one page of notifications at a time as read.

When you have 1800+ notifications piled up which you're never going to read, that's a problem.

Would be nice to have a button to mark them all as read at once.

And then search features to inspect the ones that are of most interest to you. I realize it's not a high priority wish. But surely some other people have accounts that they sometimes need to come back to after a long time.

Would be nice!

I imagine it's not that difficult to mark all notifications for a user as read, if they already have the facilities to mark a page full of notifications like that.