Ist mail.one.com sicher?

This is the webmail used with people who have hosting with *****. It is fine except if you try to use mail forwarding to your own mail client. With updated clients it functions fine, but older clients like Entourage give problems with certificates and the one.com support haven't been able to help fix the issues. That said, if you don't have very special needs, it is a fine host and the support is usually quite good.