EMAIL INFRASTRUCTURE

Send, receive,
and converse.

One API and one inbox for every message your product sends — and every reply it gets back. Pay per message, not per contact.

Get started Pricing

5 min

to your first email

~150ms

send → inbox

3 ways in

REST · SMTP · webhooks

$1/1k

flat overage

WHAT IT DOES

Send from your own domain

Transactional and conversational email with delivery, open, and click tracking. Replies thread properly in the recipient’s client — one conversation, not a pile of loose emails.

A real receive side

Most email APIs stop at send. Sharkmail routes replies back to you — parsed, threaded per contact, no webhook infrastructure on your end.

Instant, not eventual

New messages and status changes reach your dashboard over server-sent events in about 150 milliseconds. No polling loops in your code.

Developer friendly

REST API, SMTP relay, webhooks, reusable templates with {{variables}} rendered at send time. Point your existing SMTP config at Sharkmail with your API key as the password, or get replies and delivery events POSTed to your app — signed. Your first email goes out in 5 minutes.

Marketing campaigns

Paste a list, send once. Every recipient gets their own conversation — replies come back as individual threads, campaign analytics roll up deliveries, opens, and clicks per send, and one-click unsubscribe plus automatic suppression keep you off the naughty lists.

Contacts, segments & automations

Store contacts with custom fields, group them into lists, filter them into segments that evaluate live. Trigger multi-step automations when a contact is added or subscribes — send a template, wait, send the next one.

ZERO TO FIRST MESSAGE

One request to your
first conversation.

The dev key sk_test_local works out of the box in mock mode — no vendor accounts, no DNS, no waiting. Add your own domain when you’re ready to go live.

curl -X POST https://your-sharkmail.app/api/v1/emails \
  -H "Authorization: Bearer sk_test_local" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "customer@example.com",
    "subject": "Welcome aboard",
    "text": "Reply to this and it lands in your Sharkmail inbox."
  }'

Send, receive,and converse.