An Icemail Google or Microsoft mailbox is the same kind of account as a PureMail inbox: Google Workspace or Microsoft 365 on your domain, sending through Gmail’s or Outlook’s own infrastructure. The difference is not the mailbox, it is who sets it up and how hard it is meant to work.
Icemail is self-serve. You add the domains, it writes the DNS on Cloudflare, you create the mailboxes and export them to your sequencer, and you run the warmup. Its calculator then plans for 15 sends a day per mailbox and three mailboxes per domain.
With PureMail our team does that work: DNS on every domain, each inbox created with its sender name and connected to your sequencer, usually within four hours. We plan for about 30 cold emails a day per inbox once warmed, two inboxes per domain.