--- title: "Postmark Alternatives in 2026: 6 Options Compared on Price" description: "Looking for a Postmark alternative? Compare Prontuno, Resend, SendGrid, Mailgun, Amazon SES, and Cloudflare on price, message history, and dedicated IPs." image: "https://prontuno.com/wp-content/uploads/2026/02/prontuno-og-image.png" --- [Compare](https://prontuno.com/compare/)Alternatives # Postmark alternatives for transactional email in 2026 By Tunbosun Ayinla, Founder of Prontuno. Last updated: September 26, 2026. Postmark is a transactional email service from ActiveCampaign, known for separating transactional and broadcast mail into message streams. If you send transactional email only and want a lower price at volume, the shortlist below covers the main options. Each section also notes where the provider is the weaker choice. [Request access](https://app.prontuno.com/get-started/) [Prontuno vs Postmark](https://prontuno.com/compare/prontuno-vs-postmark/) Reasons to switch ## Why teams look beyond Postmark Costs that climb with volume Postmark prices each volume tier separately, so a growing app moves into more expensive tiers or pays overages. Look forA plan that includes hundreds of thousands of sends at a fixed monthly price. Domain limits on smaller plans Basic includes 5 sending domains and Pro includes 10, which is restrictive for agencies and multi-tenant apps. Look forHundreds of sending domains on an entry plan, with no per-domain fee. Dedicated IPs need high volume A dedicated IP costs extra and needs 300,000 or more emails a month. Look forA dedicated IP included in a plan, with warmup handled for you. | Provider | Emails for $99 | Message history | Compared with Postmark | | --- | --- | --- | --- | | Prontuno | 500,000 | 30 days | 6.3× as many emails as Postmark for $99 | | Resend | 171,000 | 30 days on Free, varies on paid plans | 2.2× as many emails as Postmark for $99 | | SendGrid | 171,000 | 3 days on Essentials, 7 days on Pro | 2.2× as many emails as Postmark for $99 | | Mailgun | 121,000 | 1 day on Basic, 5 days on Foundation, 30 days on Scale | 1.5× as many emails as Postmark for $99 | | Amazon SES | 618,750 | Events published to other AWS services | 7.8× as many emails as Postmark for $99 | | Cloudflare Email Service | 271,000 | Metrics and alerts in the Cloudflare dashboard | 3.4× as many emails as Postmark for $99 | | Postmark For reference | 79,000 | 45 days, with longer retention as an add-on | — | Postmark figures come from its published plans. [See Postmark pricing](https://postmarkapp.com/pricing). Amazon SES is shown on Essentials; à la carte sends 990,000 for $99. Checked September 26, 2026. One by one ## Each alternative compared with Postmark ### Prontuno 6.3× as many emails as Postmark for $99 At $99 · Standard · 500,000 included [Prontuno vs Postmark ](https://prontuno.com/compare/prontuno-vs-postmark/) Best for Teams sending transactional email at volume who want a fixed monthly price and shared IPs used only by reviewed senders. Watch out for Transactional email only, no inbound email yet, no open or click tracking, and every account is reviewed before it can send. | Feature | Prontuno | Postmark | | --- | --- | --- | | Emails for $99 | 500,000 | 79,000 | | Message history | 30 days | 45 days, with longer retention as an add-on | | Sending domains | 100 per team on credits, 1,000 on Standard and Plus, unlimited on Unlimited | 5 on Basic, 10 on Pro, unlimited on Platform | | Dedicated IP | Included with Unlimited, warmed and monitored by Prontuno | From $50 a month per IP, for 300,000 or more emails a month | ### Resend 2.2× as many emails as Postmark for $99 At $99 · Pro · 100,000 included + 71,000 overage [Prontuno vs Resend ](https://prontuno.com/compare/prontuno-vs-resend/) Best for Developers who build email with React Email and want SDKs, inbound email, and marketing from one vendor. Watch out for Per-email overages add up at volume, and dedicated IPs need the Scale plan. | Feature | Resend | Postmark | | --- | --- | --- | | Emails for $99 | 171,000 | 79,000 | | Message history | 30 days on Free, varies on paid plans | 45 days, with longer retention as an add-on | | Sending domains | 3 on Free, 10 on Pro, 1,000 on Scale | 5 on Basic, 10 on Pro, unlimited on Platform | | Dedicated IP | $30 a month on Scale, for senders above 3,000 emails a day | From $50 a month per IP, for 300,000 or more emails a month | ### SendGrid 2.2× as many emails as Postmark for $99 At $99 · Essentials · 100,000 included + 71,000 overage [Prontuno vs SendGrid ](https://prontuno.com/compare/prontuno-vs-sendgrid/) Best for Larger teams that want transactional and marketing email, validation, and subusers from one established vendor. Watch out for Short activity history on smaller plans, and no dedicated IP on Essentials. | Feature | SendGrid | Postmark | | --- | --- | --- | | Emails for $99 | 171,000 | 79,000 | | Message history | 3 days on Essentials, 7 days on Pro | 45 days, with longer retention as an add-on | | Sending domains | Varies by plan | 5 on Basic, 10 on Pro, unlimited on Platform | | Dedicated IP | 1 included on Pro and Premier | From $50 a month per IP, for 300,000 or more emails a month | ### Mailgun 1.5× as many emails as Postmark for $99 At $99 · Foundation · 100,000 included + 21,000 overage [Prontuno vs Mailgun ](https://prontuno.com/compare/prontuno-vs-mailgun/) Best for Teams that route inbound email and validate addresses, and want live support on higher plans. Watch out for Log retention is short on lower plans, and Basic allows a single sending domain. | Feature | Mailgun | Postmark | | --- | --- | --- | | Emails for $99 | 121,000 | 79,000 | | Message history | 1 day on Basic, 5 days on Foundation, 30 days on Scale | 45 days, with longer retention as an add-on | | Sending domains | 1 on Basic, 1,000 on Foundation and Scale | 5 on Basic, 10 on Pro, unlimited on Platform | | Dedicated IP | 1 included on Foundation, dedicated IP pools on Scale | From $50 a month per IP, for 300,000 or more emails a month | ### Amazon SES 7.8× as many emails as Postmark for $99 At $99 · Essentials · $0.16 per 1,000 emails [Prontuno vs Amazon SES ](https://prontuno.com/compare/prontuno-vs-amazon-ses/) Best for Teams already on AWS that want the lowest price per email and can build their own event handling. Watch out for New accounts start in the sandbox, and delivery events are published to other AWS services rather than an email log. | Feature | Amazon SES | Postmark | | --- | --- | --- | | Emails for $99 | 618,750 | 79,000 | | Message history | Events published to other AWS services | 45 days, with longer retention as an add-on | | Sending domains | Verified identities per AWS account and Region | 5 on Basic, 10 on Pro, unlimited on Platform | | Dedicated IP | $24.95 a month per IP, or managed dedicated IPs | From $50 a month per IP, for 300,000 or more emails a month | ### Cloudflare Email Service 3.4× as many emails as Postmark for $99 At $99 · Workers Paid · 3,000 included + 268,000 overage [Prontuno vs Cloudflare Email Service ](https://prontuno.com/compare/prontuno-vs-cloudflare/) Best for Apps already built on Cloudflare Workers with modest sending volume. Watch out for Sending is in public beta, new accounts start with a conservative daily quota, and each zone is limited to 30 domains. | Feature | Cloudflare | Postmark | | --- | --- | --- | | Emails for $99 | 271,000 | 79,000 | | Message history | Metrics and alerts in the Cloudflare dashboard | 45 days, with longer retention as an add-on | | Sending domains | 30 per zone | 5 on Basic, 10 on Pro, unlimited on Platform | | Dedicated IP | Not listed | From $50 a month per IP, for 300,000 or more emails a month | FAQ ## Questions about Postmark alternatives What is the best alternative to Postmark? It depends on what you send. For transactional email at a fixed monthly price, Prontuno Standard sends 500,000 emails for $99. For the lowest price per email at most budgets, Amazon SES costs less but needs more setup on AWS. For inbound email or stored templates, Resend covers more. Is Prontuno cheaper than Postmark? At a $99 monthly budget, Prontuno Standard sends 500,000 emails and Postmark sends 79,000. Prontuno sends more at that budget, but Postmark can cost less at lower volumes. Check your own volume in the [pricing calculator](https://prontuno.com/pricing/#comparison-heading) . Checked September 26, 2026. Can I switch from Postmark without rewriting my code? If you send over SMTP, yes: only the host, port, and credentials change. Postmark’s API uses its own field names, such as From, To, and HtmlBody, so each send call needs updating to Prontuno’s from, to, subject, and html fields. If your app sends email from one place, such as a mailer class, updating it is usually a small change. When is Postmark the better choice? Postmark is the better choice if you process inbound email, such as replies or support mail; you want stored templates edited outside your code; you send marketing email from the same provider; or you need more than 30 days of message history. Do I need a new domain to switch from Postmark? No. Add your existing domain to Prontuno and publish the DNS records it generates. They use their own names, so your Postmark records keep working until you finish switching. Does Prontuno track opens and clicks? No, by design. Prontuno sends your links and content exactly as written, so password reset and sign-in links are never rewritten through a tracking domain, and no tracking pixel is added. Delivery, deferral, and bounce events are still reported in your logs and webhooks. To measure clicks, add a parameter to links on your own domain and record it in your app. Can I send marketing email with Prontuno? No. Prontuno is for transactional email only, such as password resets, receipts, and account alerts. Every account is reviewed, which keeps marketing mail off the shared IPs. Newsletters and campaigns need a separate provider. Keep comparing ## More comparisons - [Prontuno vs Postmark](https://prontuno.com/compare/prontuno-vs-postmark/) A side-by-side comparison. - [Prontuno vs Resend](https://prontuno.com/compare/prontuno-vs-resend/) 171,000 emails for $99 a month. - [Prontuno vs SendGrid](https://prontuno.com/compare/prontuno-vs-sendgrid/) 171,000 emails for $99 a month. - [Prontuno vs Mailgun](https://prontuno.com/compare/prontuno-vs-mailgun/) 121,000 emails for $99 a month. - [Prontuno vs Amazon SES](https://prontuno.com/compare/prontuno-vs-amazon-ses/) 618,750 emails for $99 a month. - [Prontuno vs Cloudflare Email Service](https://prontuno.com/compare/prontuno-vs-cloudflare/) 271,000 emails for $99 a month. [See all comparisons ](https://prontuno.com/compare/) Request access ## Tell us what you send. We will take it from there. We review every application within 24 hours to keep our sending pool clean. Approved accounts start with 10,000 free credits. [Request access](https://app.prontuno.com/get-started/) [Talk to us](https://prontuno.com/contact/)