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Postal vs email-validation.org

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Postal compared with email-validation.org
DetailPostal logo Postalemail-validation.org logo email-validation.org
What it doesOpen source mail delivery platform for incoming and outgoing email Email validation at extreme speed and accuracy
StageNot given Startup
FoundedNot given 2026
Based inNot given US
Pricing modelOpen source Paid
PricingNot given Credit packs from $35 for 10,000 credits ($3.50 per 1,000) to $8,000 for 50,000,000 credits ($0.16 per 1,000). Up to 500 free credits on sign-up (100 with free email providers). 15% bonus on first 3 payments. No subscription. Unknown results free. Credits expire 24 months after grant.
Key features
  • Comprehensive web interface for mail server management and logs
  • Horizontal scalability for mail service
  • Webhooks for delivery notifications
  • Development mode for message testing
  • IP pools for reputation management
  • Spam and antivirus integrations
  • Single address checker with 5 free checks daily
  • Bulk list upload up to 1 million rows in CSV, XLSX or TXT
  • REST API with OpenAPI 3.1 spec, webhooks and SDKs
  • Five status results: valid, invalid, catch-all, unknown, disposable
  • 15-second timeout on mail server checks
  • Serverless infrastructure on Cloudflare Workers
  • 12-month answer caching for repeat checks
  • EU data residency option
  • 99.2% accuracy guarantee on bulk list results
  • Passkey and Google Sign-in authentication
What makes it different
  • Open source alternative to Sendgrid, Mailgun and Postmark
  • Self-hosted on your own infrastructure
  • Full control over mail delivery and data
  • Fast results from Cloudflare edge network with 15-second ceiling
  • No email is sent to addresses during validation
  • Lists automatically deleted after 30 days
  • No passwords with passkeys built in
Community votes00
DR (Domain Rating by Ahrefs)52 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)110
Citation Flow (Majestic)370
Referring domains (Majestic)3310

4 details filled in for both companies.

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