Custom Domain Email
AI for custom domain email
Most AI email products assume you live in Gmail. Tomorrow works with the address you already use: you@company.com on Fastmail, Proton, Outlook, self-hosted mail, ISP mail, or any IMAP server.
Native IMAP/SMTP
Connect custom-domain mail directly. No forwarding and no hosted mailbox migration.
Keep control
Your mailbox stays where it is. Other email clients keep working alongside Tomorrow.
AI on top
Draft replies, summarize threads, and turn messages into actions without changing providers.
Provider agnostic
Use the mail server you trust
Fastmail, Proton, Outlook, self-hosted, ISP mail, and business domains all work through standard mailbox protocols.
No lock-in
Your email stays portable
Tomorrow does not become your mail host. If you leave, your mailbox and address stay exactly where they were.
AI assistant
Add action, not migration
The agent works from your inbox context: draft this reply, create a task, prepare an invoice, follow up next week.
Deep dive
Why this matters
Read the full argument in why AI email assistants fail for custom-domain users.
Keep your domain. Add the AI layer.
Tomorrow is for people who already have the right email address and want the inbox to start doing more of the work.
