Maililo

For developers

Send email from your app with one API request

Contact forms, order confirmations, alerts — send them from your own business address with Maililo's REST API. Messages go out through your mailbox and show up in its Sent folder.

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How it works

  1. Connect and verify your domain, then create a mailbox.
  2. On the Pro plan, open API in your dashboard and create a key.
  3. Send a POST request with the key — that's it.

Example request

curl -X POST https://maililo.com/api/public/v1/send \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "hello@yourdomain.com",
    "to": "customer@example.com",
    "subject": "Your order is confirmed",
    "text": "Thanks for your order!"
  }'

A successful send returns { id, message_id, status: "sent" }. Errors return { error } with a clear status code (400, 401, 403, 422, 429).

Fields

  • from — one of your mailboxes (required)
  • to — an address or a list of up to 50 (required)
  • subject — subject line (required)
  • text / html — message body (at least one)
  • cc, bcc, reply_to — optional

Guides to go deeper

Frequently asked questions

Which plan includes the API?

The email API is included in the Pro plan (€39.99/month). Other plans can send through webmail, and paid plans through SMTP.

Which address do API emails come from?

From one of your own Maililo mailboxes on a domain you've verified, so replies land in your inbox and messages are signed with your domain's DKIM key.

Is there a sending limit?

API sends share your plan's daily sending limit with webmail. When it's reached, the API answers with status 429.

Can I send attachments?

Not yet. Put a download link in the message instead.

How do I keep my key safe?

Only use it in server-side code, never in a browser or mobile app. You can revoke a key at any time from the API page in your dashboard.

Get started with Maililo

Start on the free plan — no credit card required.

Get started