Documentation-based comparison
Elastic Email versus Postmark
Compare documented scope and conditions. Unknowns remain unknown; different billing units do not establish a cost winner.
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
| Requirement | Elastic Email | Postmark |
|---|---|---|
| Pricing | From $19/mo | From $15/mo |
| 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
| Unused emails do not roll over to the next billing period. Verified Oct 11, 2026 · Postmark: official product and plan documentation
|
| 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 |
|
| Log retention |
| 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
|
| 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
| Inbound email is converted to JSON and posted to your webhook URL. Verified Oct 11, 2026 · Postmark: official product and plan documentation
|
| Dedicated IP |
| 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
|
| 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. |