COMPARISON
MailKaka vs Postmark
Postmark has a strong reputation for transactional deliverability. It's a fair comparison on send reliability -- the differences that matter most for Indian teams are region, currency, and what happens when a customer hits reply.
| MailKaka | Postmark | |
|---|---|---|
| Sending region | Mumbai, India | No India region -- US/EU routing |
| Free tier | 3,000 emails/month, no fixed daily cap | 100 emails/month (no expiry, but low volume) |
| Entry paid plan | ₹899/month (25,000 emails) | $15/month (~10,000 emails, plus per-1,000 overage) |
| Billing currency | INR via Razorpay | USD only |
| Inbound email | Ready-made shared team inbox out of the box | Inbound webhook parsing available -- you build the inbox UI yourself |
| Compliance framing | DPDP Act-mapped privacy policy, India data-processor language | US-based, no India-specific compliance framing |
| AI agent access | Hosted MCP server with browser sign-in and per-agent limits | Official MCP server that you run yourself |
Postmark figures reflect postmarkapp.com/pricing as of September 2026 -- always confirm current details on their site before deciding, since pricing pages change.
BUILT FOR AI AGENTS
Let Claude Code, Cursor or any MCP client run your email.
MailKaka hosts an MCP server. Connect your coding agent once, and it can add your domain and show the DNS records, check verification, send a test email, read delivery status, and create the API key your app needs. You sign in from a browser and choose what it's allowed to do.
- Per-agent limits: 60 sends a minute and 500 emails a day
- Separate permissions for viewing, changing, sending and mailboxes
- A preview before deletes, batch sends and new API keys
- Every connection listed, and removable, in the dashboard
Postmark publishes an MCP server you run yourself. MailKaka's is hosted, so there's nothing to install or keep running.
claude mcp add --transport http mailkaka https://www.mailkaka.in/api/mcpWHY TEAMS SWITCH
Four things that actually matter.
A much larger free tier. Postmark's free plan caps out at 100 emails a month -- barely enough to finish testing an integration. MailKaka's free tier is 3,000 emails/month with no fixed daily cap.
No forex. Postmark bills in USD. MailKaka bills in INR through Razorpay.
Replies land somewhere, without you building it. Postmark can parse inbound email and forward it to a webhook -- but turning that into an actual shared inbox your support team can work from is left to you. Every MailKaka domain ships with that inbox already built.
Email is sent from India. Postmark doesn't offer an India sending region. MailKaka sends from Mumbai.
MIGRATING
Switching from Postmark.
MailKaka's API follows Resend's request shape, not Postmark's /email format, so this isn't a one-line swap -- you'll change the request body, not just the endpoint. Sender identity, recipient arrays, and HTML/text bodies map directly.
await fetch("https://www.mailkaka.in/api/emails", {
method: "POST",
headers: {
Authorization: `Bearer ${MAILKAKA_API_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
from: "hello@yourdomain.in",
to: ["customer@example.com"],
subject: "Welcome aboard",
html: "<strong>It just works.</strong>",
}),
});Full API reference: docs.md migration prompt.
FAQ
Is Postmark's deliverability better than MailKaka's?
MailKaka sends from Mumbai with guided SPF/DKIM/DMARC setup. Postmark has a long, well-documented track record on deliverability specifically -- if inbox placement is your primary concern and India infrastructure isn't a requirement, that history is worth weighing.
Can I use MailKaka just for the reply inbox and keep my current sender?
MailKaka's inbox is tied to domain authentication on MailKaka's sending infrastructure. Running a separate sender alongside a MailKaka inbox on the same domain isn't a supported setup today.
COST IN RUPEES
What MailKaka and Postmark cost per month.
| Emails a month | MailKaka | Postmark |
|---|---|---|
| 10,000 | ₹899Starter (25,000) | ~₹1,410$15 · Basic (10,000) |
| 50,000 | ₹1,499Send (50,000) | No published priceVolume tier |
| 1,00,000 | ₹3,999Growth (1,00,000) | No published priceVolume tier |
List prices for API sending only, before GST, checked on 9 November 2026 on MailKaka's pricing page and postmarkapp.com/pricing. Dollar prices are converted at ₹94 to $1; card payments in dollars also carry your bank's forex markup. MailKaka figures are the cheapest plan that includes that volume. Check both sites before deciding.
Postmark prints its price for 10,000 emails a month; larger volumes are priced on a slider on its site, so check there for your exact volume. MailKaka's Starter plan covers 25,000 emails for ₹899.
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