Mailgun
https://www.mailgun.comDeveloper-focused transactional email API and SMTP relay service, owned by Sinch, priced by monthly send volume rather than contact list size.
Best for
Developers and SaaS/product teams who need a programmatic email-sending API or SMTP relay for transactional mail (receipts, password resets, notifications) with deliverability tooling built in.
Worst for
Marketers who need a visual campaign builder, contact segmentation, automation workflows, or landing pages/forms — Mailgun does not provide a marketing-campaign layer.
Pricing
| Model | Send-volume-tiered | No source | Unverified |
|---|---|---|---|
| Free plan | Yes — 100 emails/day, 1 custom sending domain, 2 API keys, 1 inbound route, 1-day log retention, ticket support only. | Source ↗ | Verified 2026-08-18 |
| Annual discount | 0% mailgun.com/pricing/ shows only flat monthly prices for Basic/Foundation/Scale with no annual-billing toggle or percentage discount presented at signup. Negotiated annual terms may exist for Enterprise contracts but no published percentage was found. | Source ↗ | Verified 2026-08-18 |
Confirmed directly on mailgun.com/pricing/ (2026-08-18): four self-serve tiers priced by monthly email volume — Free ($0, 100 emails/day), Basic ($15/mo, 10,000 emails/mo, overage from $1.80/1,000), Foundation ($35/mo, 50,000 emails/mo, overage from $1.30/1,000, first month free), Scale ($90/mo, 100,000 emails/mo, overage from $1.10/1,000, first month free, includes 1 dedicated IP + SAML SSO + live phone/chat support) — plus a custom-quote Enterprise tier ('everything in Scale plus custom features, Deliverability Services, and Rapid Fire Burst Sending SLA'). Additional dedicated IPs are $59/IP/month. Mailgun also sells separately-priced add-on products (Optimize, Validate, Inspect) not modelled here. NOTE ON PAY-AS-YOU-GO: Mailgun formerly offered a 'Flex' pay-as-you-go plan; Mailgun's own help center describes it as a legacy plan 'retained as reference for any accounts that may still be using this legacy plan' and it does not appear as a selectable option on the current mailgun.com/pricing/ page, but some third-party sources describe it as still active at $2/1,000 emails after a late-2025 price change. This is unresolved from first-party sources as of this review — see reports/needs-verification.md. It is not modelled as a purchasable plan in this file or in the pricing engine.
Official pricing page ↗Capabilities
| Marketing email | No Mailgun's own tagline is 'Transactional Email Delivery Service & API for Developers'; its product pages describe API/SMTP-triggered sending, batch sending, and email logs, with no campaign-management UI, audience/list marketing tools, or drag-and-drop email builder for marketing sends. | Source ↗ | Verified 2026-08-18 |
|---|---|---|---|
| Transactional email | Native Core product — this is what Mailgun is built for. | Source ↗ | Verified 2026-08-18 |
| SMTP relay | Native Pricing page describes the product as 'RESTful email APIs and SMTP relay.' | Source ↗ | Verified 2026-08-18 |
| REST API | Yes | Source ↗ | Verified 2026-08-18 |
| Webhooks | Yes Listed under every plan as 'Tracking, analytics, and webhooks.' | Source ↗ | Verified 2026-08-18 |
| Automation | None No marketing-automation workflow builder is described on the Send product page or pricing page; sends are triggered by the customer's own application code, not by a built-in automation engine. | Source ↗ | Verified 2026-08-18 |
| Segmentation | None No contact/audience segmentation feature is described. Mailgun 'mailing lists' are an SMTP distribution-list routing feature, not marketing segmentation. | Source ↗ | Verified 2026-08-18 |
| A/B testing | No No built-in split-testing tool. Mailgun's own guidance describes a manual workaround — tagging emails with campaign IDs and comparing results after the fact in Analytics — not an automated A/B test feature. | Source ↗ | Verified 2026-08-18 |
| SMS | None No SMS feature appears on Mailgun's product or pricing pages. Sibling company Sinch sells SMS APIs separately, but SMS is not part of the Mailgun product. | Source ↗ | Verified 2026-08-18 |
| Landing pages | None No landing-page builder described anywhere in the product lineup. | Source ↗ | Verified 2026-08-18 |
| Forms | No No native form builder or hosted opt-in form feature described. | Source ↗ | Verified 2026-08-18 |
| Deliverability tools | Advanced Mailgun Optimize provides inbox placement testing across major mailbox providers, blocklist/reputation monitoring with Google Postmaster Tools and Microsoft SNDS integration, live email preview testing on 100+ clients/devices, and (Enterprise) dedicated deliverability services. | Source ↗ | Verified 2026-08-18 |
| Dedicated IP | Paid add-on Additional dedicated IPs are $59/IP/month; one dedicated IP is bundled into the $90/mo Scale plan. Not available on Free/Basic/Foundation without the add-on. | Source ↗ | Verified 2026-08-18 |
Ecommerce
| Shopify | Via integration No native Shopify app; connects via Zapier to trigger sends (order confirmations, abandoned-cart reminders, welcome emails) from Shopify events. | Source ↗ | Verified 2026-08-18 |
|---|---|---|---|
| WooCommerce | Not verified No WooCommerce integration found on mailgun.com/integrations/ or elsewhere in this pass; absence not positively confirmed by a first-party statement. See reports/needs-verification.md. | No source | Unverified |
| Magento | Not verified No Magento integration found on mailgun.com/integrations/ or elsewhere in this pass; absence not positively confirmed by a first-party statement. See reports/needs-verification.md. | No source | Unverified |
| Product recommendations | Not verified No evidence of this feature found either way. See reports/needs-verification.md. | No source | Unverified |
| Abandoned cart | Not verified Mailgun can send an abandoned-cart email when triggered externally (e.g. via the Zapier/Shopify integration), but Mailgun itself has no native cart-abandonment detection; absence of a native feature not positively confirmed by a first-party source. See reports/needs-verification.md. | No source | Unverified |
| Revenue attribution | Not verified No information found either way. See reports/needs-verification.md. | No source | Unverified |
Integrations
| Count | Not verified | Source ↗ | Verified 2026-08-18 |
|---|---|---|---|
| Notable | Shopify, Zapier, Salesforce, Hubspot, Slack, Wordpress, N8n, Make | Source ↗ | Verified 2026-08-18 |
Support
| Support channels | Email, Chat, Phone, Knowledge base Free/Basic/Foundation get ticket (email) support only; live phone and chat support are gated to the Scale plan and above. help.mailgun.com is a public knowledge base available regardless of plan. | Source ↗ | Verified 2026-08-18 |
|---|---|---|---|
| SLA | Not verified | No source | Unverified |
| Free plan support | Yes Ticket support only on the Free plan. | Source ↗ | Verified 2026-08-18 |
Compliance
| GDPR DPA | Yes Mailgun states it provides a pre-drafted DPA for customers to sign to meet GDPR Article 28 requirements. | Source ↗ | Verified 2026-08-18 |
|---|---|---|---|
| EU data residency | Yes Pricing page states customers can 'send email through the US or the EU from a single account,' i.e. a selectable EU region/endpoint (api.eu.mailgun.net) at the domain level. | Source ↗ | Verified 2026-08-18 |
| SOC 2 | Yes 'Sinch Mailgun is SOC 2 Type II and ISO/IEC 27001 Certified.' | Source ↗ | Verified 2026-08-18 |