I have been using IDnet Webmail quite a lot in the past week while I try to sort out an issue with Outlook on my wife's new computer.
Unfortunately, much of the time it appears to be unavailable. I login satisfactorily and five minutes later the site will not load.
I trust I am not alone in finding this!
Can't say I use it regularly, Dave.
I do use it occasionally and as yet I've not noticed an issue. I'm not sure what to suggest but I'll keep an eye on it for a few days.