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Developer-focused transactional email API and SMTP relay service, owned by Sinch, priced by monthly send volume rather than contact list size.

SaaS·Medium complexity·Founded 2010·Full review: Verified 2026-08-18
See alternatives to Mailgun →

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

ModelSend-volume-tiered No source Unverified
Free planYes — 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 discount0%

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 emailNo

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 emailNative

Core product — this is what Mailgun is built for.

Source ↗ Verified 2026-08-18
SMTP relayNative

Pricing page describes the product as 'RESTful email APIs and SMTP relay.'

Source ↗ Verified 2026-08-18
REST APIYes Source ↗ Verified 2026-08-18
WebhooksYes

Listed under every plan as 'Tracking, analytics, and webhooks.'

Source ↗ Verified 2026-08-18
AutomationNone

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
SegmentationNone

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 testingNo

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
SMSNone

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 pagesNone

No landing-page builder described anywhere in the product lineup.

Source ↗ Verified 2026-08-18
FormsNo

No native form builder or hosted opt-in form feature described.

Source ↗ Verified 2026-08-18
Deliverability toolsAdvanced

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 IPPaid 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

ShopifyVia 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
WooCommerceNot 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
MagentoNot 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 recommendationsNot verified

No evidence of this feature found either way. See reports/needs-verification.md.

No source Unverified
Abandoned cartNot 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 attributionNot verified

No information found either way. See reports/needs-verification.md.

No source Unverified

Integrations

CountNot verified Source ↗ Verified 2026-08-18
NotableShopify, Zapier, Salesforce, Hubspot, Slack, Wordpress, N8n, Make Source ↗ Verified 2026-08-18

Support

Support channelsEmail, 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
SLANot verified No source Unverified
Free plan supportYes

Ticket support only on the Free plan.

Source ↗ Verified 2026-08-18

Compliance

GDPR DPAYes

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 residencyYes

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 2Yes

'Sinch Mailgun is SOC 2 Type II and ISO/IEC 27001 Certified.'

Source ↗ Verified 2026-08-18