What the evidence answers

A reading of reviewed official documentation for Elastic Email and Postmark. It is not a hands-on test, a ranking or a recommendation of one product.

Price

  • Elastic Email From $19/mo
    • Free: no subscription charge
    • Starter: $19.00 monthly
    • Pro: $49.00 monthly
  • Postmark From $15/mo
    • Free: no subscription charge
    • Basic: $15.00 monthly
    • Pro: $16.50 monthly
    • Platform: $18.00 monthly
    • High volume: Vendor quotation required

Both list prices on the same basis. Compare what each plan includes; the lower amount alone does not make the better choice.

Documented for both

Sending volume
Elastic Email Paid tiers run from 50,000 to 10,000,000 emails a month.Free: 3,000 emails per monthStarter: 50,000 emails per monthPro: 50,000 emails per month
Postmark Unused emails do not roll over to the next billing period.Free: 100 emails per monthBasic: 10,000 emails per monthPro: 10,000 emails per monthPlatform: 10,000 emails per month
Sender domains
Elastic Email Sending from your own domain with DNS validation, SPF and DKIM is listed in the plan table.
Postmark Free: 10 custom sending domainsBasic: 5 custom sending domainsPro: 10 custom sending domainsPlatform: Unlimited custom sending domains
Log retention
Elastic Email Free: 3 days of email logsStarter: 3 days of email logsPro: 7 days of email logs
Postmark Custom activity retention starts at USD 5 a month and is only available on Pro plans or higher; statistics are kept indefinitely.Basic: 45 daysPro: Customizable up to 365 days; 45 days by defaultPlatform: Customizable up to 365 days; 45 days by default
Webhooks and events
Elastic Email Webhooks can report sends, opens, clicks, bounces, unsubscribes and other email events.Pro: Webhooks included
Postmark Inbound email is converted to JSON and posted to your webhook URL.Pro: Inbound email processing includedPlatform: Inbound email processing included
Dedicated IP
Elastic Email Starter: Private IP add-on: USD 40 a monthPro: Private IP add-on: USD 50 a month
Postmark From USD 50 a month per IP, for accounts sending 300,000 or more emails a month on Pro or higher.
Support
Elastic Email Free support by in-app messenger or email, with a response expected within 24 hours; a paid Dedicated Support add-on shortens response times.
Postmark Support requests are handled by the customer success team through support tickets.
Overage charges
Elastic Email No per-email overage: on reaching the sending limit the plan upgrades automatically if auto-increase is on, or you upgrade manually.
Postmark Extra emails on paid plans are calculated at the end of the billing cycle and added to the next month's charge.Free: No overages are allowed on Free.

Limits to check

  • Elastic Email Starter does not list webhooks, inbound email processing or sub-accounts; only Pro adds them.
  • Postmark There is no tier between the free 100 emails a month and the 10,000-email paid tier.

Not verified yet

Every compared requirement has evidence for at least one.

Not verified means our reviewed sources do not establish it. It does not mean a product lacks the capability or that it costs nothing.

Next steps

Documented scope and limits; unverified dimensions remain unknown.
RequirementElastic EmailPostmark
Pricing
Who it is for
Email API and SMTP relay for transactional emails, notifications and bulk sending from your own software.

Verified Oct 11, 2026 · Elastic Email: official product and plan documentation

Sends transactional email and keeps bulk or broadcast email on separate Message Streams.

Verified Oct 11, 2026 · Postmark: official product and plan documentation

Coverage limits
Starter does not list webhooks, inbound email processing or sub-accounts; only Pro adds them.

Verified Oct 11, 2026 · Elastic Email API pricing, plan table and FAQ

There is no tier between the free 100 emails a month and the 10,000-email paid tier.

Verified Oct 11, 2026 · Postmark: official product and plan documentation

Sending volume
Paid tiers run from 50,000 to 10,000,000 emails a month.

Verified Oct 11, 2026 · Elastic Email API pricing, plan table and FAQ

  • Free 3,000 emails per month
  • Starter 50,000 emails per month
  • Pro 50,000 emails per month
Unused emails do not roll over to the next billing period.

Verified Oct 11, 2026 · Postmark: official product and plan documentation

  • Free 100 emails per month
  • Basic 10,000 emails per month
  • Pro 10,000 emails per month
  • Platform 10,000 emails per month
Sender domains
Sending from your own domain with DNS validation, SPF and DKIM is listed in the plan table.

No domain limit is stated.

Verified Oct 11, 2026 · Elastic Email API pricing, plan table and FAQ

  • Free 10 custom sending domains
  • Basic 5 custom sending domains
  • Pro 10 custom sending domains
  • Platform Unlimited custom sending domains
Log retention
  • Free 3 days of email logs
  • Starter 3 days of email logs
  • Pro 7 days of email logs
Custom activity retention starts at USD 5 a month and is only available on Pro plans or higher; statistics are kept indefinitely.

Verified Oct 11, 2026 · Postmark: official product and plan documentation

  • Basic 45 days
  • Pro Customizable up to 365 days; 45 days by default
  • Platform Customizable up to 365 days; 45 days by default
Webhooks and events
Webhooks can report sends, opens, clicks, bounces, unsubscribes and other email events.

Verified Oct 11, 2026 · Elastic Email: official product and plan documentation

  • Pro Webhooks included
Inbound email is converted to JSON and posted to your webhook URL.

Verified Oct 11, 2026 · Postmark: official product and plan documentation

  • Pro Inbound email processing included
  • Platform Inbound email processing included
Dedicated IP
  • Starter Private IP add-on: USD 40 a month
  • Pro Private IP add-on: USD 50 a month
From USD 50 a month per IP, for accounts sending 300,000 or more emails a month on Pro or higher.

Fully managed by Postmark.

Verified Oct 11, 2026 · Postmark: official product and plan documentation

Support
Free support by in-app messenger or email, with a response expected within 24 hours; a paid Dedicated Support add-on shortens response times.

The add-on price is not shown.

Verified Oct 11, 2026 · Elastic Email API pricing, plan table and FAQ

Support requests are handled by the customer success team through support tickets.

The pricing page lists no support level per plan.

Verified Oct 11, 2026 · Postmark support centre

Overage charges
No per-email overage: on reaching the sending limit the plan upgrades automatically if auto-increase is on, or you upgrade manually.

With auto-increase, the higher price applies only for the rest of the subscription period.

Verified Oct 11, 2026 · Elastic Email API pricing, plan table and FAQ

Extra emails on paid plans are calculated at the end of the billing cycle and added to the next month's charge.

Verified Oct 11, 2026 · Postmark: official product and plan documentation

  • Free No overages are allowed on Free.
Coverage note

The table shows two prices for the two paid plans.

At the price shown; larger tiers are selected on the slider.

Starting tier; unlimited emails per day.

Not listed on the Basic card.

Choose two or three products.