UK Sovereign Mail
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UK-owned · UK-hosted · outside US CLOUD Act reach

Transactional email, sovereign by default.

The developer-first email API for UK businesses and the public sector — receipts, password resets and alerts, sent from infrastructure that never leaves UK jurisdiction.

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Your app sends email through our UK API to the world Your app sends a request to the Sovereign Mail API at the Manchester data centre. From there, emails go out to London and Edinburgh, and to New York, São Paulo, Lagos, Dubai, Singapore and Tokyo. Your data stays in the UK under UK GDPR and the Data Protection Act 2018, outside the US CLOUD Act and EU jurisdiction. </> Your app sends via our API POST /email London Edinburgh New York São Paulo Lagos Dubai Singapore Tokyo Manchester data centre
Your app sends through our API in Manchester, and your emails reach inboxes across the UK and the world. Your data (message logs, content, keys) is stored and processed only in Britain, under UK law.

Estimate your cost

How much will you send?

— plan —

Start free

Send in three steps

1

Verify your domain

Add the SPF, DKIM and DMARC records — generated for you.

2

Create an API key

Live and test (sandbox) keys, scoped and revocable.

3

Send

One POST to our API — DKIM-signed, from UK infrastructure.

Or let your AI assistant do it

When you add your domain, we hand you two ready-made prompts for Claude, ChatGPT, Gemini, Copilot or Cursor. One writes the integration into your app, whatever it's built with: Node, Python, PHP, Ruby, Go, .NET, or anything else that can make an HTTPS request. The other walks you through the DNS records for your provider, or adds them itself if your assistant can reach your DNS.

Moving from another provider? There's a prompt for that too, on Switch to Us.

Send your first email

curl -X POST https://sovmail.co.uk/api/v1/email \
  -H "Authorization: Bearer smk_live_…" \
  -H "content-type: application/json" \
  -d '{"from":"noreply@mail.you.uk","to":"user@example.org",
       "subject":"Welcome","text":"Hello"}'

UK-sovereign — unlike the US incumbents

  Sovereign Mail Postmark / Mailgun
UK-owned & UK-hostedYesNo
Outside US CLOUD ActYesNo
No open/click tracking (privacy)YesTracks opens/clicks
Pay by UK bank transferYesCard only
Public-sector readyYes—

Why sovereignty matters →

Keep your transactional email in the UK.

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