Postmark
✓ VerifiedPostmark is a fast, reliable transactional email delivery service focused on speed and inbox placement, used by thousands of developers and businesses since 2010.
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✓ Free plan available
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⚡ At a glance
Best for: Developers and SaaS companies needing fast, reliable transactional email delivery
✓ Exceptionally fast delivery — often sub-second inbox arrival
✗ No free plan — trial credit is limited (100 emails) and expires; paid plans required for ongoing use
An honest editorial snapshot from this tool's profile — not a paid placement.
Postmark specializes in transactional email delivery via API and SMTP, with a strong emphasis on deliverability, speed, and separation of transactional and bulk email streams. It offers developer-friendly libraries, detailed analytics, inbound email processing, and email templates. Clients like IKEA, Asana, 1Password, and Webflow trust it for mission-critical email delivery.
Best for: Developers and SaaS companies needing fast, reliable transactional email delivery
Key Features
- Transactional Email API & SMTP
- Message Streams (separate transactional and bulk)
- Inbound Email Processing
- Email Templates
- Delivery Analytics & Retention
- DMARC Digests
- Webhooks & Event Tracking
- Official libraries for Node.js, Python, Ruby, PHP, and more
- Bulk Email API
How to use Postmark
- Sign up for a free Postmark account (no credit card required).
- Create a server to organize your email sending by project or environment.
- Verify a custom sending domain using SPF, DKIM, and DMARC records.
- Send your first test email via the REST API, SMTP, or an official SDK.
- Set up message streams to separate transactional and broadcast/marketing email.
- Use email templates for common messages like welcome emails and password resets.
- Configure inbound email processing to receive and parse incoming messages as JSON via webhook.
- Monitor deliverability, bounces, opens, and clicks from the analytics dashboard, and upgrade your plan as volume grows.
Pros
- Exceptionally fast delivery — often sub-second inbox arrival
- Industry-leading deliverability reputation with dedicated IP infrastructure
- Clean, developer-friendly API with libraries for most popular languages
- Excellent support responsiveness, frequently praised by users
- Clear separation of transactional and bulk streams prevents reputation bleed
Cons
- No free plan — trial credit is limited (100 emails) and expires; paid plans required for ongoing use
- More expensive per email than competitors like Amazon SES or Mailgun at higher volumes
- Not designed as a full marketing email platform — limited automation and campaign features
- Template editor is functional but less powerful than dedicated tools like Mailchimp or Klaviyo
- Bulk email capabilities are newer and less mature compared to its transactional strengths
Pricing Details
| Pricing type | Freemium |
| Starting at | Free (100 emails/mo trial credit) |
| Free plan | ✅ Available |
Postmark Pricing
Postmark pricing — 4 plans: Free ($0/mo) · Basic ($15/mo (for 10,000 emails/month; scales with volume)) · Pro ($16.50/mo (for 10,000 emails/month; scales with volume)) · Platform ($18/mo (for 10,000 emails/month; scales with volume)). Compare monthly and yearly costs below.
🔎 Prices verified Jul 2026 · View live pricing →
⚠️ Postmark pricing scales with monthly email volume via a slider on the pricing page (shown here at the 10,000 emails/month tier). Optional add-ons include dedicated IPs (from $50/mo per IP, Pro+ only), custom activity retention (from $5/mo, Pro+ only), and DMARC monitoring (from $14/mo per domain). Postmark is now part of ActiveCampaign.
Free
$0/mo
$0/yr
- ✓ Test your integration with 100 emails/month
- ✓ no overages allowed. Perfect for testing integrations
- ✓ evaluating deliverability
- ✓ or side projects with low volume.
Basic
$15/mo (for 10,000 emails/month; scales with volume)
Monthly billing only - contact for volume discounts
- ✓ For solo developers and smaller teams. Extra emails at $1.80/1,000. Industry-leading deliverability
- ✓ 45-day data retention
- ✓ 5 custom sending domains
- ✓ unlimited emails/day
- ✓ detailed analytics.
Pro
$16.50/mo (for 10,000 emails/month; scales with volume)
Monthly billing only - contact for volume discounts
- ✓ Most popular - for startups and small businesses. Extra emails at $1.30/1,000. Customizable data retention up to 365 days
- ✓ 10 custom sending domains
- ✓ unlimited emails/day
- ✓ inbound email processing.
Platform
$18/mo (for 10,000 emails/month; scales with volume)
Monthly billing only - contact for volume discounts
- ✓ For agencies and larger teams. Extra emails at $1.20/1,000. Customizable data retention up to 365 days
- ✓ unlimited custom sending domains
- ✓ unlimited emails/day
- ✓ inbound email processing.
See Current Pricing →
Pricing may change — always verify on the official site.
- Sending transactional emails (password resets, receipts, notifications) from SaaS apps
- Startups and bootstrapped projects needing reliable email without infrastructure overhead
- Agencies managing email delivery for multiple client applications
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SE Ranking
| |
|---|---|---|---|---|
| Rating | ★★★★½ 4.4 | ★★★★½ 4.5 | ★★★★½ 4.4 | ★★★★☆ 4.2 |
| Trust Score | 88/100 | 90/100 | 88/100 | 84/100 |
| Pricing |
Free
$0/mo
Basic
$15/mo
Pro
$16.50/mo
Platform
$18/mo |
Basic
$25/mo
Advanced
$399/mo
Plus
$2,300/mo
Grow
$65/mo |
Standard
$99/user/mo
Professional
$149/user/mo
Advanced
$199/user/mo
Custom
Tailored pricing -… |
Core
$129/mo
Growth
$279/mo
Enterprise
Custom |
| Data updated | 1 month ago | Not yet | Not yet | 1 month ago |
| Try → | Compare → | Compare → | Compare → |
About Trust Score
Trust Score (0–100) is the average of five quality criteria — Value for money, Free plan, Ease of use, Features, and Transparency — scored on a strict scale. Popularity, brand size, and affiliate commissions never affect it. Tools marked "Editorial estimate" are not yet hands-on tested. How Trust Score works →
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