Omnivery

Omnivery is a security-first transactional and marketing email platform. It provides an SMTP relay and a REST API that is natively compatible with the SendGrid, Mailgun, and SparkPost APIs, so most integrations can migrate with little or no code change.

It runs on Omnivery's own infrastructure rather than third-party cloud, applies strict sender vetting to keep shared-IP reputation clean, and backs deliverability with human analysts rather than automated alerts. Omnivery is certified to ISO 27001, ISO 27701, and HIPAA, never stores message content, and offers data residency in the EU or US. A built-in Bot Detection API identifies non-human interactions - security-scanner clicks, Apple Mail Privacy Protection opens, and bot fraud in engagement data. Omnivery is a paid product with volume-based pricing and no free tier.