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Synthropia Mail · early access

Business email on your own domain, with an AI that clears the inbox.

Private email for small teams: your address, encrypted at rest, a fast app for the browser and your phone, and an AI assistant that sorts, drafts and books. We're opening it to a small group first.

Join the early-access list Agencies: white-label it

What you get

Your domain, your addresses

you@yourcompany.com, plus aliases and shared inboxes like hello@ or office@ — with thread assignment and internal notes.

An AI that does the inbox work

It sorts mail into inquiries, bookings, urgent and spam, and drafts replies from your price list and rules. You just approve.

Private by default

Message content, attachments and sent mail are encrypted at rest. No ads, and no reading your mail to profile you.

Threads that read like chat

A whole conversation in one view. Undo send, scheduled send, snooze, labels and rules.

In the browser and on your phone

Install the app on iPhone or Android straight from the site, with push notifications for new mail.

Ready for AI agents

A sending API, webhooks and service accounts are there today. An MCP server for AI agents is planned.

What it doesn't do (yet)

  • No IMAP. At launch you can't connect Outlook, Apple Mail or Thunderbird — you use our app. If that's a dealbreaker, tick the box in the form.
  • It isn't end-to-end encrypted like Proton. Mail is encrypted at rest, but search and the AI need access to the content.
  • It runs on Cloudflare. Your domain needs to use Cloudflare DNS (free) — we'll walk you through the move.
  • It's early access. A small team, onboarding in batches. Pricing isn't final yet.

For agencies and IT providers

Email for your clients, under your brand

Already look after your clients' websites and domains? Give them AI email under your own logo and address, managed from one panel.

  • The app with your logo, colours and address.
  • One admin panel for every client domain.
  • Billed per domain, not per mailbox.

We're looking for a few agencies to pilot it. Pick “agency” in the form below.

Join the early-access list

Three minutes. We also ask about price and your current provider — that decides what we build first.

Questions

When can I start?
We're letting businesses in by batch. Joining the list puts you in line, and we'll write when your turn comes. No newsletter.
Do I keep my own domain?
Yes. The domain needs to use Cloudflare's free DNS, then we set up the MX, SPF, DKIM and DMARC records. We'll walk you through it step by step.
Can I bring my old mail?
Yes, from an .mbox file. Gmail exports one through Google Takeout, and most mail apps can save one too.
Does it work with Outlook or Apple Mail?
Not at launch — there's no IMAP. You read mail in our app in the browser and on your phone. If you need IMAP, tick the box in the form: we're counting how many people do.
Where is my data stored?
On Cloudflare's infrastructure, encrypted at rest. Before you move business mail, we'll send you the data-processing details and sub-processor list in writing.
How much will it cost?
Pricing isn't set yet. We're aiming below Google Workspace and Microsoft 365, and the AI features may be a separate add-on. The form asks what you'd pay — it genuinely helps.