Postmark vs Amazon SES

Postmark vs Amazon SES vs Sequenzy: Quick Comparison

Score Breakdown

Each category scored out of 10. Totals: Postmark 82/100, Amazon SES 57/100, Sequenzy 73/100.

Feature-by-Feature Comparison

Detailed feature analysis across every category that matters for B2B SaaS email.

Postmark vs Amazon SES vs Sequenzy: Pricing

Postmark charges per email, all features included. SES charges $0.10/1,000 with no monthly fee. Sequenzy charges by volume with all features.

B2B SaaS Use Cases

How each platform handles the email workflows that matter most for B2B SaaS companies.

Automation Capabilities

Email automation is critical for B2B SaaS. Here is how Postmark, Amazon SES, and Sequenzy compare.

API & Developer Experience

For B2B SaaS teams, the API quality directly impacts how fast you can integrate and iterate on email.

const postmark = require("postmark");
const client = new postmark.ServerClient("token");
await client.sendEmailWithTemplate({
  From: "hello@acme.com",
  To: "user@company.com",
  TemplateAlias: "welcome",
  TemplateModel: { firstName: "Sarah" },
});

import { SESv2Client, SendEmailCommand } from "@aws-sdk/client-sesv2";
const client = new SESv2Client({ region: "us-east-1" });
await client.send(new SendEmailCommand({
  FromEmailAddress: "hello@acme.com",
  Destination: { ToAddresses: ["user@company.com"] },
  Content: { Simple: {
    Subject: { Data: "Welcome" },
    Body: { Html: { Data: "<h1>Hi Sarah!</h1>" } },
  }},
}));

import { Sequenzy } from "sequenzy";
const sq = new Sequenzy("sq_your_api_key");
await sq.subscribers.add({
  email: "user@company.com",
  firstName: "Sarah",
  stripeCustomerId: "cus_abc123",
});
await sq.sequences.trigger({
  email: "user@company.com",
  sequence: "trial_onboarding",
});

Email Deliverability Comparison

Your emails are useless if they do not reach the inbox. Here is how all three platforms handle deliverability.

Postmark has dramatically better deliverability than SES shared IPs. SES requires active management to avoid account suspension. Postmark strict sender policies keep all IPs pristine.

Integration Ecosystem

Postmark has ~40 integrations, Amazon SES has ~200, and Sequenzy has ~25. Here is how they compare across key B2B SaaS categories.

Analytics & Reporting

What data you can track and how each platform helps you measure email performance.

Pros & Cons

Who Should Use What?

Specific recommendations based on your company type and needs.

Migration Guide

The Bottom Line

Frequently Asked Questions

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