Write to a person.

Anything that does not fit the categories below. A person reads it.

Something is not working, or you cannot get a mailbox to behave. Check the support pages first — most of what people write about is answered there, in less time than an email round trip.

Several domains, a team, or the your-cloud mail plane. The sales page has a form that collects what we need to answer properly.

A vulnerability in the site, the dashboard or the mail plane. We will not pursue anyone acting in good faith, and there is no paid bounty — the disclosure policy says what is in scope.

Mail from a Ruber address that is abusive, fraudulent, or breaking the acceptable use policy. Include full headers — the visible From line usually is not enough to identify the account.

Access, correction, erasure, portability, or anything else about personal data. These carry a statutory deadline, so send them here rather than to the general address.