Compatibility check

Will Zefram connect to your mailbox?

Zefram connects to mailboxes hosted on Google Workspace and Microsoft 365. Enter your work email and we will check in a second where your mail is hosted.

The check runs in your browser. Your address is never sent to Zefram — only the domain part is looked up from public DNS.

How the check works

Only the domain

Your browser takes the part after the @ sign. The name in front of it never leaves your device and nothing is stored anywhere.

Public DNS records

The domain’s mail server records (MX) and a few related records are read from public DNS – the same information every email in the world uses to find its way.

A plain answer

If the records point to Microsoft 365 or Google Workspace, Zefram connects. If they point elsewhere, we say so honestly – and tell you what we see.