Two transactional email providers, compared on price, features and ratings, so you can pick fast.
Mandrill wins deliverability and sending APIsPostmark wins price and reviews
Updated July 2026
At a glanceMandrillPostmark
Entry price$20$10
Cost per 1k @ 100k$0.8$1.26
G2 rating4.24.6
Trustpilot1.63.8
THE VERDICT
Mandrill wins on deliverability and sending APIs. Postmark wins on price and reviews.
Mandrill starts at $20 versus Postmark's $10. Postmark rates higher with developers (4.6 vs 4.2 on G2). Pick based on volume and team, and the scorecard below breaks down where each one leads.
Which should you choose?
Pick Mandrill
✓If you are a community, organization, or person who sends emails to multiple people and needs a quick fix.
✓It isn't for affiliate marketers.
✓Mandrill is a good option if you want easily accessible and detailed reports on your emails.
Winner cells are tinted, green where Mandrill leads, violet where Postmark does.
capability
Mandrill
Postmark
Pricing
Starting paid plan
$20/mo
$15/mo
Cost per 1k @ 100k
$0.8
$1.26
Pricing model
Pay-as-you-go
Subscription
Overage
Auto-purchase blocks or stop sending; no rollover
$1.20–$1.80 per 1,000 by plan
Deliverability
Dedicated IP
Add-on
Add-on
Deliverability tooling
Yes
Yes
Automated IP warmup
Yes
No
Suppression management
Yes
Yes
SPF / DKIM / DMARC
Yes
Yes
API & sending
Transactional API
Yes
Yes
Marketing campaigns
No
No
SMTP relay
Yes
Yes
Inbound routing
Yes
Yes
Dynamic templates
Yes
Yes
Batch send
Yes
Yes
Scheduled send
Yes
No
Developer experience
Official SDKs
PHP, Python, Ruby, Node.js
.NET, Java, Node.js, PHP, Python, Ruby, Rails
Event webhooks
Yes
Yes
Drag-and-drop editor
Yes
No
Custom HTML editor
Yes
Yes
Email validation
No
No
Log retention
—
45 days
Sandbox / test mode
Yes
Yes
Analytics
Open / click tracking
Yes
Yes
Analytics dashboard
Yes
Yes
A/B testing
Yes
No
Compliance
EU data residency
No
No
SOC 2
Yes
No
HIPAA
No
No
GDPR
Yes
Yes
ISO 27001
Yes
No
Support
Support channels
Email, Chat
Email, Chat
24/7 support
—
No
Support SLA
Plan-gated
No
FAQ
Common questions
Mandrill starts at $20 versus Postmark's $10. Because pricing models differ by tier, the cheaper option depends on your monthly volume, so compare the pricing rows in the scorecard above.
Pricing, plans and feature availability as of July 2026 and may change. Ratings are aggregated from public review platforms. Mandrill is Mailchimp Transactional; Postmark is an ActiveCampaign product.