Alternatives

Switching provider, one endpoint at a time

Each of these pages covers a specific provider: what Omnivery does differently, what the comparison looks like row by row, and what the migration actually involves. The common thread is that Omnivery implements the SendGrid v3, Mailgun v3 and SparkPost v1 request formats natively, so leaving one of them is usually a configuration change rather than a development project.

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API compatible

SendGrid Alternative

SendGrid retired its free plan in May 2025. If you now have to pay anyway, here is how the alternatives differ - including which ones fit better than Omnivery.

Read the comparison → API compatible

Mailgun Alternative

Omnivery is a Mailgun alternative: Mailgun API v3 compatible, ISO 27001, ISO 27701 and HIPAA certified, EU infrastructure, easy migration.

Read the comparison → API compatible

SparkPost Alternative

Omnivery is a SparkPost (Bird Email) alternative with a stable API: ISO 27001, ISO 27701, HIPAA certified, SparkPost v1 compatible.

Read the comparison → Migration guide

Postmark Alternative

Omnivery is a Postmark alternative: ISO 27001, ISO 27701, HIPAA certified, 100% EU infrastructure, no stored email content, easy migration.

Read the comparison →

What is the same in every case

The per-provider pages differ in the comparison and the migration detail. These points hold whichever one you are leaving.

  • Your client library keeps working Omnivery natively implements the SendGrid v3, Mailgun v3 and SparkPost v1 request formats, so an existing integration moves by changing the base URL and API key rather than by being rewritten.
  • Your webhook consumer keeps working Omnivery emits webhooks in Mailgun, SendGrid, SparkPost or either of two Bloomreach Engage formats, so delivery and engagement events do not need a second parser.
  • State comes with you One-click migration from Mailgun, SparkPost or SendGrid transfers domain settings, webhooks, suppressions, allowlists and templates, and deduplicates against existing data so it can be re-run.
  • It does not have to be all-or-nothing Because the request and webhook formats can match your incumbent, Omnivery can run as a second provider alongside it rather than replacing it outright. See running Omnivery as your second provider.
  • The infrastructure underneath changes Omnivery runs exclusively on its own physical infrastructure. There is no AWS, Azure or Google Cloud in the delivery path, and all operations are performed by the Czech entity.
  • The compliance position changes Omnivery holds seven ISO certifications - ISO 9001, ISO/IEC 20000-1, ISO 22301, ISO/IEC 27001, ISO/IEC 27017, ISO/IEC 27018 and ISO/IEC 27701 - plus HIPAA, and signs Business Associate Agreements. The certificates are published for download.
  • Message content stops being stored Omnivery does not store message body content. Delivery metadata is retained for a maximum of 30 days, after which only summary volume counts remain.
  • There is a vetting step Every Omnivery sending domain is vetted before it can send, normally within one to three working days, and there is no free tier. Plan for it in a migration timeline; it is also the mechanism that keeps the shared sending reputation clean.

Inboxing, Security, Compliance

Not on any of the four? The compatibility layer covers the SendGrid, Mailgun and SparkPost dialects, and the SMTP relay covers anything that can send mail at all, so the migration conversation usually starts from a shorter list than expected.

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