Winner cells are tinted, green where Loops leads, violet where Postmark does.
capability
Loops
Postmark
Pricing
Starting paid plan
$49/mo
$15/mo
Cost per 1k @ 100k
—
$1.26
Pricing model
Subscription
Subscription
Overage
No send overages (sends unlimited on paid plans); cost scales by contact-count tier
$1.20–$1.80 per 1,000 by plan
Deliverability
Dedicated IP
No
Add-on
Deliverability tooling
Yes
Yes
Automated IP warmup
Yes
No
Suppression management
Yes
Yes
SPF / DKIM / DMARC
Yes
Yes
BIMI
Yes
—
API & sending
Transactional API
Yes
Yes
Marketing campaigns
Yes
No
SMTP relay
Yes
Yes
Inbound routing
No
Yes
Dynamic templates
Yes
Yes
Batch send
Yes
Yes
Scheduled send
Yes
No
Developer experience
Official SDKs
JavaScript/TypeScript, Go, Ruby, PHP, Nuxt
.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
Included
No
Log retention
Not publicly documented
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/in-app support; docs and AI agent setup
Email, Chat
24/7 support
No
No
Support SLA
No
No
FAQ
Common questions
Loops starts at Free 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 August 2026 and may change. Ratings are aggregated from public review platforms. Postmark is an ActiveCampaign product.