Postmark Alternative
Mailofly vs. Postmark
Postmark has no multi-step sequence automation, only 100 test emails on signup, and high tier pricing. Mailofly gives you 3,000 free emails every month, multi-provider failover, and marketing sequences with opt-out starting at $0/mo.
| Feature | Mailofly | Postmark |
|---|---|---|
| Platform Scope & Sending | ||
Transactional Email (REST API & SMTP) | ||
Free Tier Allowance | 3,000 emails / mo forever | 100 emails trial only |
Marketing Sequences & Campaign Automation | ||
Inbox Identities (Gmail / Outlook) | ||
Automated Email Warmup | ||
SMTP Relay Support | ||
Batch Sending API | ||
| Infrastructure & Deliverability | ||
Sending Architecture | Multi-Provider Edge Routing | Single Active Infrastructure |
Multi-Provider Outage Failover | ||
Pre-send Spam Analysis | Spam check API only | |
Deliverability Radar | ||
Dedicated IPs | Available on higher tiers | |
DKIM (2048-bit) & SPF Setup | ||
| Data Retention & Webhooks | ||
Activity Log Retention | 15–30 days included | 45 days included |
Real-time Event Webhooks | ||
Inbound Email Webhooks | ||
Cryptographic Webhook Signatures | Standard Webhooks HMAC-SHA256 | Basic auth / Custom hash |
| Developer Experience & AI Tools | ||
Official MCP Server (AI Agents) | ||
SDK Support | Node, Python, Go, PHP, Dart | Node, Ruby, Python, .NET, PHP |
React Email Compatibility | ||
AI Email Assistant | ||
Google Sheets Contact Sync | ||
Free tier includes REST API, SMTP, marketing campaigns, and 15-day logs — no credit card required.
Get started freePricing comparison
Side-by-side pricing at common volume tiers.
| 3,000emails / mo | 50,000emails / mo | 125,000emails / mo | |
|---|---|---|---|
MailoflyAPI + SMTP + marketing campaigns + multi-provider failover | $0 /mo | $20 /mo | $49 /mo |
PostmarkTransactional & broadcast only (no sequence automation) | $15 (for 10k) /mo | $55 /mo | $115 /mo |
* Mailofly Free includes 3,000/mo. Basic ($20/mo) includes 60,000 emails. Scale ($49/mo) includes 120,000 emails.
* Postmark charges $15/mo for 10k, $55/mo for 50k, and $115/mo for 125k. Figures as of Sep 2026.
5-Minute Migration
Switch from Postmark in under 5 minutes
Same core payload structure. Drop in the Mailofly SDK or point your SMTP relay host to Mailofly.
npm install @mailofly/node
// 1. Swap Postmark client for Mailofly
-import * as postmark from "postmark";
-const client = new postmark.ServerClient(process.env.POSTMARK_API_KEY);
+import { Mailofly } from "@mailofly/node";
+const mailofly = new Mailofly({ apiKey: process.env.MAILOFLY_API_KEY });
// 2. Send transactional email
const { data, error } = await mailofly.emails.send({
from: "support@yourdomain.com",
to: "user@example.com",
subject: "Confirm your email address",
html: "<strong>Click here to confirm: <a href='...'>Link</a></strong>",
});
Frequently Asked Questions