@hucker Did you try disabling extensions and/or blocking on that site? Block lists get updated, as does Opera itself.

Too intermittent for me to troubleshoot it. It only delays the page by a second or two anyway.

@hucker What mail service? They may use a redirector (or the sender might) which either Opera or an extension considers as probable tracking. (Yes, some of the built-in features are treated as extensions by the error handler).

I've seen it on a number of emails, from the likes of Ebay etc. But it's happening on almost every one, and it wasn't doing so a week ago.

Well actually nothing in the Opera Browsing universe is actually given any form of support by them. Why?

Although I usually do not like cynical answers, I can say just this: if not satisfied with Opera, they will gladly return your payment to them.

In other words - never expect any free official support from free [as beer] services or software. Some companies offer support, some not - depends on their business model and whatnot else. Most likely losing few customers (with their tracking data) is cheaper for Opera than keeping qualified support personnel on paylist.