vioscale
Comparison

Postmark vs SendGrid

On the evidence we track, Postmark leads this comparison with a composite score of 63/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Postmark full profile →SendGrid full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
★Postmark63
SendGrid53
Score
Vioscale score
Postmark63 / 100low · 49%updating
SendGrid53 / 100low · 31%updating
Pricing
Free tier
Postmark✓
SendGrid✓
Model
Postmarkfreemium
SendGridfreemium
Price level
Postmarklow
SendGridunknown
Transparent
Postmark✓
SendGrid✓
Integrations
Count
Postmark22
SendGrid–
Security
Disclosure policy
Postmark–
SendGrid✓
Gdpr
Postmark✓
SendGrid✓
Reliability
Status page
Postmark✓
SendGrid✓
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for communication apis. “-” means undocumented, not absent.

Channels
SMS
Postmark-
SendGrid-
Voice
Postmark-
SendGrid-
WhatsApp
Postmark-
SendGrid-
RCS
Postmark-
SendGrid-
Transactional email
Postmark✓
SendGrid✓
Video / real-time
Postmark-
SendGrid-
In-app chat
Postmark-
SendGrid-
Verify / OTP / 2FA
Postmark-
SendGrid-
Messaging
Two-way messaging
Postmark✓
SendGrid-
Reach
Geographic coverage
PostmarkGlobal
SendGrid-
Delivery
Email deliverability tools
Postmark✓
SendGrid-
Commercial
Published per-unit pricing
Postmark✓
SendGrid-

What each one is

The product in its own terms, so the numbers below have context.

Postmark

Leader

A transactional email platform that sends emails through API and SMTP endpoints, with built-in capabilities for tracking delivery success, handling bounces, and processing inbound messages. Designed for developers who need to integrate email delivery into applications.

Independently observed

SendGrid

A cloud-based email service for sending transactional emails via API or SMTP, and creating targeted marketing email campaigns. Handles over 200 billion emails per month.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Postmark

Leader
from $1.20/moSubscriptionFree tier

From $15/mo. Free tier with 100 emails/month. Pay-as-you-go overages starting at $1.80 per 1,000 emails.

  • FreeFree
    • 100 emails/month
    • REST API
    • SMTP
    • Transactional email
    • Sandbox Mode
    • +3 more
  • Basic$15/mo + $1.80 per 1,000 overage emails
    • 10,000+ emails/month
    • Industry-leading deliverability
    • 45-day retention
    • 5 custom domains
    • Unlimited emails/day
    • +3 more
  • Pro$16.50/mo + $1.30 per 1,000 overage emails
    • 10,000+ emails/month
    • Industry-leading deliverability
    • Customizable retention up to 365 days
    • 10 custom domains
    • Unlimited emails/day
    • +5 more
  • Platform$18/mo + $1.20 per 1,000 overage emails
    • 10,000+ emails/month
    • Industry-leading deliverability
    • Customizable retention up to 365 days
    • Unlimited custom domains
    • Unlimited emails/day
    • +5 more
as of verify ↗

SendGrid

Usage-based

Transparent pricing with discounts as you scale. Free trial available (no credit card required).

as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Postmark✓
SendGrid✓
Deployment
Cloud / SaaS
Postmark✓
SendGrid✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Postmark

Leader
22 total
  • Mailcoach
  • Datadog
  • Craft CMS
  • Customer.io
  • ActiveCampaign
  • Supabase
  • Bubble
  • Figma
  • Google Sheets
  • Gravity Forms
  • Gravity SMTP for WordPress
  • Netlify
  • Slack
  • Stripe
  • Stripo
  • Typeform
  • WordPress
  • WP Mail SMTP
  • Zapier
  • Tabular
  • SureTriggers
  • Marka Email Generator
Independently observed

SendGrid

Not documented yet.

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.