Postmark vs SendGrid

Two transactional email providers, compared on price, features and ratings, so you can pick fast.

Postmark wins transactional focusSendGrid wins breadth and compliance

Updated September 2026

At a glancePostmarkSendGrid
Entry price$10$14.95
Cost per 1k @ 100k$1.26$0.35
Free tier100/moTrial
G2 rating4.64.0

THE VERDICT

Postmark wins on transactional focus. SendGrid wins on breadth and compliance.

Postmark is the transactional specialist, fast, reliable delivery, a clean code-first workflow, 45-day logs, and $15/mo to start. SendGrid is the broader platform: marketing campaigns, a drag-and-drop editor, EU data residency, ISO 27001, and 24/7 support. Postmark is US-only and transactional-only; SendGrid does more but carries more surface area. Pick Postmark for pure transactional email; SendGrid for transactional plus marketing in one.

Which should you choose?

Pick Postmark

✓Fast, reliable transactional delivery
✓45-day log retention
✓Simple, focused, code-first
Set up Postmark with Courier →

Pick SendGrid

✓Marketing campaigns + drag-and-drop editor
✓EU data residency and ISO 27001
✓24/7 support
Set up SendGrid with Courier →

Feature by feature

Winner cells are tinted, green where Postmark leads, violet where SendGrid does.

capability
Postmark
SendGrid
Starting paid plan
$15/mo
$19.95/mo
Cost per 1k @ 100k
$1.26
$0.35
Pricing model
Subscription
Subscription
Overage
$1.20–$1.80 per 1,000 by plan
upgrade tier / per-block overage
Dedicated IP
Add-on
Plan-gated
Deliverability tooling
Yes
Yes
Automated IP warmup
No
Yes
Suppression management
Yes
Yes
SPF / DKIM / DMARC
Yes
Yes
BIMI
—
Yes
Transactional API
Yes
Yes
Marketing campaigns
No
Yes
SMTP relay
Yes
Yes
Inbound routing
Yes
Yes
Dynamic templates
Yes
Yes
Batch send
Yes
Yes
Scheduled send
No
Yes
Official SDKs
.NET, Java, Node.js, PHP, Python, Ruby, Rails
Node.js, Python, PHP, Ruby, Go, Java, C#
Event webhooks
Yes
Yes
Drag-and-drop editor
No
Yes
Custom HTML editor
Yes
Yes
Email validation
No
Plan-gated
Log retention
45 days
3 days default; 30 days add-on
Sandbox / test mode
Yes
Yes
Open / click tracking
Yes
Yes
Analytics dashboard
Yes
Yes
A/B testing
No
Yes
EU data residency
No
Yes
SOC 2
No
Yes
HIPAA
No
No
GDPR
Yes
Yes
ISO 27001
No
Yes
Support channels
Email, Chat
Email/Ticket, Chat, Phone
24/7 support
No
Yes
Support SLA
No
Plan-gated
Migration assistance
—
Yes

FAQ

Common questions

Not really, Postmark is built for transactional email (with basic broadcast message streams). SendGrid includes full marketing campaign tools.

Keep comparing

Related comparisons

Mailgun vs PostmarkEmail→AWS SES vs PostmarkEmail→Postmark vs SparkPostEmail→OneSignal Email vs PostmarkEmail→Mailjet vs PostmarkEmail→Mandrill vs PostmarkEmail→

Why not both?

Use both behind one API.

Route Postmark, SendGrid, or both, and switch providers without changing your code. Courier sits in front of every channel.

Start building freeRead the docs

Pricing, plans and feature availability as of September 2026 and may change. Ratings are aggregated from public review platforms. Postmark is an ActiveCampaign product; SendGrid is a Twilio product.