I already got two SMS's from someone at swisscom, who tells me, to go to following website and confirm my E-Mail address at following link:
https://www.swisscom.ch/e-mail-ueberpruefung
Here's a screenshot:

The request and the link seems to be valid. Questions:
1) Did someone else get those?
2) Why can't you provide more information about this on your website? An announcement, FAQ or anything?
3) Why do I get this annoying request? I already confirmed my E-Mail when I signed up a long time ago.
4) Why an SMS? Why can't you just write an E-Mail to that E-Mail address with a confirmation link first?
5) Why can't I confirm my E-Mail address? Does not seem to work for no reason whatsoever. See here:

This really looks like a phishing attempt. But if it ain't, someone at swisscom really needs to rethink that whole thing.
Thank you for your time.