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ToolGPA

Postmark vs Resend

We give Postmark a 2.2 GPA and Resend a 2.6, out of 4.0. Resend grades higher on value for money. They get the same grade on the free plan, features, ease of use and platforms.

Price, platforms and features side by side. The table says where each price was read and when.

Postmark

Transactional email API and SMTP, with broadcasts on a separate stream

Free plan · from $15/mo
Full detailspostmarkapp.com

Resend

Developer email API with React Email templates and a free tier

Free plan · from $20/mo
Full detailsresend.com

How we grade them

2.2GPAPostmarkFair2.6GPAResendGood
Value for money
DGraded on 50,000 emails a month: $55 on Basic or $60.50 on Pro, billed monthly only. That's the dearest in this category at that volume, roughly twice the middle. Bootstrapped companies can ask for $75 of credit, which helps a bit.
BGraded on 50,000 emails a month: Pro is $20 for exactly that, in the cheaper quarter of this category at that volume, with 10 domains and no daily limit. There's no yearly discount, and extra emails are $0.90 per 1,000.
Free plan and trial
CA free developer plan that never expires and needs no card, but it's 100 emails a month with no way to buy more. That's for testing an integration, not running an app.
CFree for good: 3,000 emails a month, but only 100 a day, with 3 domains, 1 webhook and 30 days of logs. Marketing email is free up to 1,000 contacts too. A busy launch day will hit that daily cap.
Features
BAPI and SMTP with SDKs, separate streams for app and bulk email, inbound email turned into JSON, templates, 45 days of message history and DMARC reports as an add-on. It covers the whole job; inbound needs Pro.
BAPI, SMTP, SDKs, React Email templates, inbound email and inboxes for AI agents, signed webhooks, a test mode and broadcasts. It covers the whole job. No address validation is on record, and dedicated IPs need Scale.
Ease of use
CJudged on how fast a developer sends a first email: official SDKs, a sandbox mode, ready-made templates for resets and receipts, and migration guides. You'll still verify a domain first. No rating on record.
CJudged on how fast a developer sends a first email: SDKs for most languages and React templates make it quick for web developers, and test mode fakes events safely. You still verify a domain first. No rating on record.
Platforms and integrations
BWeb, with an API and SMTP, plus Zapier, WordPress, Stripe, Slack, Supabase, Bubble, Netlify and Datadog. No desktop or phone app, so B is the top.
BWeb, with an API, SMTP, SDKs and MCP, and it slots into Next.js, Remix, Nuxt, Express, Hono and Astro. No desktop or phone app, so B is the top.
Best forapp email kept apart from marketing sendsdevelopers building with React and Next.js

The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Postmark and Resend. How we grade

Price against what you get

Postmark starts at $15 a month and scores 2.7 out of 4 on features, ease of use and platforms. Resend starts at $20 a month and scores 2.7.

They score the same, and Postmark starts $5 a month lower. Of the other email sending services on the chart, none scores higher than Postmark for less, and none scores higher than Resend for less.

Features, ease of use and platforms, averaged

C2.0B3.0A4.0$5$10$20$50More for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessPostmarkResend

What paid plans start at, a month (each step along is roughly double) →

  • The best score at each price
  • Has a free plan
  • No free plan
The full chart of email sending services, and the best at every price

Where they differ

  • Postmark starts at $15 per month for 10,000 emails. Resend starts at $20 per month for 50,000 emails, billed monthly.
  • Postmark also covers dMARC.
  • Resend also covers email campaigns.
In commonFree planWebPublic APITransactional email

At a glance

PostmarkResend
PricingFree planFree plan
Starts at$15 per month for 10,000 emails$20 per month for 50,000 emails, billed monthly
Free planFree developer plan: 100 emails a month with no expiry and no overages, for testing an integration or a small side project. No credit card needed.3,000 transactional emails a month, limited to 100 a day, 3 domains, 3 inboxes, 1 webhook endpoint and 30 days of logs. Marketing email free up to 1,000 contacts.
Free trialNone listedNone listed
Web
Made byActiveCampaign, LLCResend
Price read frompostmarkapp.comresend.com
CheckedOct 18, 2026Oct 18, 2026

Who each one suits

Postmark

  • Software teams whose password resets and receipts must arrive fast
  • Apps that need to receive and parse incoming email
  • Bootstrapped founders, who can ask for $75 of credit

Resend

  • Developers building with Node.js, Next.js or React
  • Startups that want a free tier of 3,000 emails a month
  • Teams sending both app email and newsletters from one account

Worth knowing

Postmark

  • There is no tier between the free 100 emails a month and the 10,000-email paid plans.
  • Billing is monthly only; the FAQ says annual plans are not offered yet.
  • Basic has no inbound email processing and caps users at 4 and sending domains at 5.
  • Dedicated IPs start at $50 a month per IP, need Pro or higher and 300,000 emails a month or more.

Resend

  • Billing is monthly only; there are no annual plans or yearly discounts.
  • There is no plan between Free and the $20 Pro plan, and the free plan caps sending at 100 emails a day.
  • Dedicated IPs cost $30 a month and need the Scale plan and more than 3,000 emails a day; SSO is a $150 a month add-on on Scale.
  • Marketing email is priced separately by contacts, from $40 a month for 5,000; broadcasts do not use the transactional quota.

Key features

Postmark

Email API and SMTP
Send through a REST API with official SDKs or through SMTP, with batch sending, a sandbox mode and migration guides from other providers.
Message streams
Transactional and bulk or broadcast email run on separate sending infrastructure, so marketing sends do not affect password resets and receipts.
Inbound email processing
Pro and Platform turn incoming email into a JSON object and post it to a webhook URL your app handles.
Templates
Responsive templates for welcome emails, password resets and receipts, with a template editor and import tool.
Message history and analytics
45 days of full message content by default, adjustable from 7 to 365 days, with bounce details, open and link tracking and a stats API.
DMARC monitoring
DMARC Digests reports show authentication problems and who is sending with your domain, sold as an add-on from $14 a month per domain.

Resend

API, SMTP and SDKs
Send through a REST API or SMTP relay, with official SDKs for Node.js, Python, Ruby, PHP, Go, Rust, Java, Elixir and .NET, plus batch sending and scheduling.
React Email templates
Build email templates as React components with TypeScript and Tailwind through the open-source React Email library, instead of hand-written HTML tables.
Inbound email and inboxes
Receive email through webhooks, parse content and attachments, and give your team or AI agents inboxes reachable by API and MCP; 3 are included.
Webhooks and test mode
Signed webhooks report deliveries, opens, clicks, bounces and complaints, and a test mode simulates events without emailing real people.
Broadcasts and automations
A visual editor, contact lists, segments and broadcast analytics for marketing email, sold as separate plans priced by contacts.
Deliverability tools
DKIM, SPF and DMARC setup, automatic suppression lists, bounce details, region choice and managed dedicated IPs on Scale.

Plans

Postmark

  • Free$0

    100 emails a month, never expires; extra emails cannot be bought on this plan.

  • Basic$15

    per month for 10,000 emails

    5 sending domains, 4 users, 45 days of history, no inbound email. Extra emails $1.80 per 1,000; $55 a month at 50,000 emails.

  • Pro$16.50

    per month for 10,000 emails

    10 domains, 6 users, inbound email, retention up to 365 days. Extra emails $1.30 per 1,000; $60.50 a month at 50,000 emails.

  • Platform$18

    per month for 10,000 emails

    Unlimited domains, servers, streams and users, with inbound email. Extra emails $1.20 per 1,000; $66 a month at 50,000 emails.

  • High volumeCustom

    Custom pricing for large senders, arranged through sales.

Resend

  • Free$0

    3,000 emails a month and 100 a day, 3 domains, 1 webhook endpoint, ticket support.

  • Pro$20

    per month for 50,000 emails, billed monthly

    No daily limit, 10 domains, 5 webhook endpoints, 100 AI credits. $35 a month at 100,000 emails; overage $0.90 per 1,000.

  • Scale$90

    per month for 100,000 emails, billed monthly

    1,000 domains, Slack support, urgent response SLA; dedicated IP and SSO as add-ons. $160 a month at 200,000 emails. Overage $0.90 per 1,000, less at higher tiers.

  • EnterpriseCustom

    For 1 million or more emails a month: volume pricing, dedicated IPs, SSO, 99.99% uptime SLA and a dedicated success manager.

Ways to pay less

Postmark

  • Startups

    $75 credit for bootstrapped companies

    Companies that have launched, are charging for their product and have taken no outside investment can ask support for $75 of account credit.

Resend

  • Nonprofit

    50% off for nonprofits

    Registered nonprofits can apply for 50% off paid plans. Resend says it does not offer education pricing.

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