Everything you need in one email platform
Transactional email, inboxes, campaigns, and developer tools — all in one place.
Transactional Email
Ship receipts, OTPs, welcome emails, and product notifications through a clean API.
API-first sending
Send emails with a single API call. JSON request in, email delivered. No SMTP configuration needed.
POST /api/v1/email/send
{
"to": "[email protected]",
"template": "welcome",
"variables": {
"name": "Jane",
"company": "Acme"
}
}Dynamic templates
Create reusable templates with variable substitution. Manage them from the dashboard or via API.
Webhooks
Get real-time notifications for delivery, bounces, complaints, and opens. React to email events in your app.
Campaigns
Lightweight marketing and announcement tools built into the same platform.
Contact lists
Import contacts via CSV, manage subscribers, and segment your audience. Built-in unsubscribe handling.
Bulk sends
Send to thousands of contacts with throttling and delivery optimization built in.
Scheduling
Schedule campaigns for future delivery. Preview before sending and cancel anytime before launch.
Inbox & Mailboxes
Real mailboxes without the bloat of enterprise email suites.
Mailboxes
Create mailboxes for hello@, support@, billing@ and more. Each mailbox gets its own IMAP credentials.
Aliases & forwarding
Set up aliases that forward to existing mailboxes or external addresses. Route mail exactly where it needs to go.
IMAP access
Connect any standard email client — Thunderbird, Apple Mail, or your favorite IMAP app. Full read/write access.
Developer Tools
Programmable from day one. Built for humans and AI agents alike.
REST API
Full-featured REST API covering every operation: domains, sending, mailboxes, campaigns, and more.
curl -X POST \
https://api.mailkatana.com/v1/email/send \
-H "Authorization: Bearer mk_..." \
-d '{"to":"[email protected]",
"subject":"Hello",
"html":"<h1>Welcome</h1>"}'SMTP relay
Drop-in SMTP credentials for apps that need traditional SMTP. Works with any framework or language.
MCP server
Give your AI agents direct access to email operations through the Model Context Protocol. Create domains, send email, manage inboxes — all via MCP.
// MCP tool call
{
"tool": "mailkatana_send",
"arguments": {
"to": "[email protected]",
"subject": "Welcome aboard",
"template": "onboarding"
}
}Platform features
Shared capabilities across all of MailKatana.
Domain management
Guided DNS setup for DKIM, SPF, and domain verification.
Usage controls
Plan limits, warnings at 80%, and hard stops to prevent runaway costs.
Analytics
Delivery rates, opens, clicks, bounces, and complaints in one dashboard.
Team access
Invite team members with role-based permissions.
Ready to simplify your email stack?
Get started in minutes. One platform for transactional email, inboxes, and campaigns.