The Mailgun EU alternative for transactional email

Familiar API patterns, inbound parsing, and sender controls with EU/EEA-hosted primary service data, a standard DPA, and fewer add-on products to review during migration.

Start free · 5-minute migration See pricing

For a broader provider evaluation, see Postscale as an EU-hosted email API provider for transactional workflows.

What to check in a Mailgun EU alternative

A Mailgun EU alternative search usually starts with data residency, then moves quickly into API compatibility, inbound routing, validation costs, and whether the EU setup is default or opt-in.

Default EU posture

Confirm whether EU/EEA service-data hosting is the default for new accounts or a region choice that has to be selected, configured, and verified in every integration.

Operating entity and subprocessors

EU controllers often review Mailgun's operating entity, DPA, subprocessors, SCCs, Transfer Impact Assessment posture, and CLOUD Act exposure.

Inbound and validation add-ons

Teams often leave Mailgun because inbound parse, validations, dedicated IPs, and analytics become separate budget and vendor-review lines as volume grows.

Migration without breaking webhooks

A good replacement maps Mailgun events, suppressions, DNS records, SMTP credentials, and inbound parse payloads before production traffic moves.

Why teams switch from Mailgun

EU entity, EU/EEA-hosted primary service data

Mailgun documents US and EU regions. Postscale is operated by DNScale OÜ in Estonia and hosts primary production service data in the EU/EEA, with documented safeguards for limited infrastructure metadata where required.

Simpler bundled workflow

Mailgun is a broad developer email platform with pricing by plan, volume, validations, retention, and feature set. Postscale bundles sending, inbound, suppressions, masked addresses, and DMARC reporting in one focused product.

Developer-first, same shape

Both APIs support REST, SMTP relay, and event webhooks. Migration usually means changing the endpoint, replacing credentials, and adding a small payload-mapping layer.

European sender controls

Postscale is tuned for European mailbox providers, with deliverability controls, authentication, and warming workflows built for EU senders from day one.

Side-by-side comparison

Mailgun is a broad developer email platform with REST, SMTP, regions, inbound routes, events, and validation products. Postscale competes by narrowing the workflow around product email, privacy aliases, and EU/EEA-hosted primary service data.

Feature	Postscale	Mailgun
Price at 10,000 sends/mo	€9	Basic starts at $15/mo for 10,000 emails
Price at 100,000 sends/mo	€79	Scale tier lists 100,000 emails/mo
EU/EEA-hosted primary service data	Yes	US and EU regions documented
Inbound email included	Yes	Inbound routing documented by plan
Masked email addresses	Yes (Shield)	No
Email validation included	Yes	Pay per validation
DMARC reporting API	Yes	Partial
SMTP relay	Yes	Yes
XRechnung / e-invoicing	Yes	No

Pricing comparison: account for add-on workflow

Mailgun pricing is plan-based with current allowances, retention, validations, and routing features listed on the official pricing page. Compare the plan that matches your sending, inbound, validation, and log-retention needs.

Scenario	Mailgun	Postscale	Planning note
10,000 transactional emails/month	Mailgun Basic lists 10,000 emails/month and starts at $15/mo on the current pricing page.	Starter includes 10,000 shared send + receive emails/month at EUR 9/mo.	Compare retention, webhook needs, and inbound route requirements, not only included send volume.
50,000 to 100,000 emails/month	Mailgun Foundation and Scale tiers publish larger allowances and different extra-email rates.	Pro includes 100,000 shared send + receive emails/month at EUR 79/mo.	Use the tier that matches your real volume and feature needs before declaring a price winner.
Validation-heavy signup flow	Mailgun prices extra validations separately on the public pricing page.	Postscale includes email validation in the product workflow for paid plans.	High signup volume can make validation pricing a meaningful part of total cost.
Inbound routes and replies	Mailgun documents inbound routes and HTTP forwarding actions for receiving email.	Postscale inbound rules send parsed signed webhooks with attachment metadata and alias support.	Test MX, route matching, payload shape, and retries before changing production DNS.

API migration example: Mailgun to Postscale

Mailgun sends often use form-encoded fields. Keep the provider payload inside one adapter so the rest of the application sends normalized message objects.

Mailgun Messages API

const form = new FormData();
form.append("from", "Acme <alerts@example.com>");
form.append("to", "user@example.com");
form.append("subject", "Welcome");
form.append("html", "<p>Hello from Acme</p>");

await fetch("https://api.mailgun.net/v3/mg.example.com/messages", {
  method: "POST",
  headers: {
    "Authorization": "Basic " + btoa(`api:${process.env.MAILGUN_API_KEY}`),
  },
  body: form,
});

Postscale REST API

await fetch("https://api.postscale.io/v1/send", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.POSTSCALE_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    from: "Acme <alerts@example.com>",
    to: ["user@example.com"],
    subject: "Welcome",
    html_body: "<p>Hello from Acme</p>",
    tags: ["onboarding"],
  }),
});

Deliverability checks before moving from Mailgun

Provider changes do not transfer sender reputation by themselves. Keep the sender domain, authentication, suppression history, and ramp plan stable while you compare results.

Authentication parity

Publish Postscale DKIM, SPF, return-path, and DMARC-compatible records beside the existing provider records before production traffic moves.

Suppression continuity

Export hard bounces, spam complaints, unsubscribes, and manual suppressions from the old provider, then import them before the first live send.

Segmented cutover

Move one stream first, such as password resets or low-volume notifications, then widen only after delivery events and complaint rates look normal.

Webhook reconciliation

Run old and new webhook handlers together during cutover so delivery, bounce, defer, and complaint state stays observable.

EU hosting and compliance proof points

Use these checks when comparing EU email API alternatives. Server location matters, but so do processor agreements, subprocessors, retention, and the entity operating the service.

Operating entity

Postscale is operated by DNScale OÜ in Estonia, EU.

Primary service data

Primary production service data is hosted in the EU/EEA, with documented safeguards for limited infrastructure metadata where required.

Processor paperwork

A standard GDPR DPA is available for vendor review. Open DPA

Subprocessors

Current subprocessors and safeguards are published. Review subprocessors

Privacy documentation

Processing, retention, and contact routes are documented. Read privacy policy

Mailgun EU alternatives to evaluate

A useful shortlist includes dedicated transactional APIs, broader marketing suites, and cloud-provider email services. The right fit depends on whether you need sending only, inbound routing, privacy aliases, or simpler legal review.

Postscale

EU-operated transactional email API with REST, SMTP, inbound webhooks, suppressions, masked addresses, DMARC reporting, and EU/EEA-hosted primary service data.

Best for

Teams moving from Mailgun because they want fewer add-ons, clearer EU processor documentation, and one product surface for send and receive.

Brevo

France-based email platform with transactional sending plus marketing, CRM, SMS, and broader campaign tooling.

Best for

Teams that want a European marketing suite as well as transactional email.

MailerSend

EU-based email delivery platform with SMTP, API sending, templates, webhooks, and a MailerLite ecosystem connection.

Best for

Teams that want a dedicated European transactional provider with familiar developer primitives.

Scaleway Transactional Email

Transactional email service from Scaleway for teams that already prefer European cloud infrastructure.

Best for

Infrastructure-oriented teams that want email delivery close to their EU cloud stack.

Migrate from Mailgun in under an hour

Reuse your DNS

Leave Mailgun's DNS records in place during cutover. Add Postscale's CNAMEs and SPF include alongside so both providers can authenticate during the transition.

Swap endpoint and key

Replace api.mailgun.net calls with api.postscale.io. The send and inbound payloads are similar enough that most teams handle the change in an adapter.

Cut inbound MX

Point your MX from mxa.mailgun.org to mx.postscale.io. Keep both webhook handlers available during testing, then remove the Mailgun records once traffic confirms.

Open full migration guide Open converter

Build the Mailgun migration cluster

These pages connect the comparison to the commercial and technical topics evaluators usually inspect before switching an email provider.

Email API

Review Postscale's REST API, SMTP relay, inbound webhooks, suppressions, and aliases in one product surface.

Read next

Transactional email service

Map password resets, OTPs, confirmations, notifications, and receipts to a dedicated transactional workflow.

Read next

SMTP relay

Move frameworks, CMSs, and legacy products with an SMTP host and credential swap before deeper API work.

Read next

Inbound email API

Receive replies and workflow mail as signed, parsed webhooks with attachment metadata.

Read next

SMTP relay vs email API

Choose the right integration path before rewriting existing provider-specific code.

Read next

Bounce handling

Preserve hard bounce, soft bounce, and complaint handling while changing providers.

Read next

Source material used for this comparison

Mailgun claims should stay traceable to current official pricing, region, API, inbound-route, and webhook documentation.

Mailgun pricing

Official pricing page for current plan allowances, extra email rates, validation pricing, and inbound-route availability.

Mailgun API overview and regions

Official API overview documenting US and EU region base URLs and versioned endpoints.

Mailgun Messages API

Official Messages API endpoint for sending through Mailgun.

Mailgun receive by HTTP

Official inbound route action documentation for HTTP forwarding.

Mailgun webhooks API

Official webhook API documentation for account-level and domain-level webhooks.

Frequently asked questions

What is the best Mailgun EU alternative?

The best fit depends on why you are leaving Mailgun. Postscale is a strong fit when you want EU/EEA-hosted primary service data, transactional sending, inbound webhooks, suppressions, masked addresses, and DMARC reporting without separate add-on products.

Is Mailgun's EU region enough for GDPR?

It may be enough for some teams, but EU controllers usually review more than server region: operating entity, DPA, subprocessors, transfer safeguards, logs, support data, and whether the EU region is consistently configured.

Do you handle EU-to-non-EU sending transparently?

Yes. Primary Postscale service data is hosted in the EU/EEA, while email delivery still reaches recipients globally. Delivery to US, APAC, and LATAM inboxes uses normal internet mail routing and documented infrastructure safeguards.

What happens to my Mailgun event history?

Stays on Mailgun for as long as your retention there allows. Postscale starts fresh on cutover; if you need unified analytics, export Mailgun's event history to your own store before switching.

Will my webhook handler work without changes?

Probably with minor field renames. Our event payload shape is close to Mailgun's but not identical — we document every field mapping in the migration guide.

Is there a free tier big enough to test with production traffic?

Yes. The free tier handles 1,000 sends/month which is more than enough to validate routing, webhooks, and templates against real recipients before you flip DNS.

Can I keep my Mailgun webhook handler?

Usually with a small adapter. Delivery, bounce, defer, and complaint events map cleanly, but field names differ. Keep both providers active until your webhook shim handles both payload shapes.

Ready to switch?

Free tier covers your evaluation. Migration is a DNS change and an API key swap.

Create a free account