On: If it will matter after today, don't talk about it in a chat room

[Const-me]

I prefer to right-click on e-mail and "create rule from message" from context menu. Also, the feature doesn't require any steps to configure, install or enable, it just works out of the box.

[welterde → Const-me]

Unlike the Outlook+Exchange combination Sieve is an actual open standard (RFC 5228 & RFC 5804 & co) though that can be implemented by all mail servers and mail clients. Or is the Outlook+Exchange feature based on the same?

Looking at the sieve website it seems quite a few desktop and web mail clients do have support for it either out of the box or as an add-on. So I would say that having this functionality is more on the "common" side than "borderline unique".

[p_l → welterde]

Exchange rules configured through Outlook are omnipresent.

Sieve might be supported by many email clients, but is pretty much nonexistent in corporate email.

Actually, if someone points me to one hosted email provider that does support it, I'd be glad - I was wondering about trying it out but nobody supports it.

[bchanudet → p_l]

I recently switched some of my email addresses to Migadu. I haven't tested it yet but they apparently offer Sieve support.

[Const-me → welterde]

> Or is the Outlook+Exchange feature based on the same?

Not sure but unlikely. It works in Exchange for 20 years now, that RFC was written in 2008.

> having this functionality is more on the "common" side than "borderline unique".

The complete UX makes it borderline unique. Available out of the box, has a nice GUI, and is reliable in practice.