17%
improved click rate vs. Mailgun & SendGrid
Kiwi (travel platform, Bloomreach)
The Best Mailgun Alternative in 2026: The Most Secure Transactional Email Platform on the Planet
Sinch acquired Mailgun in 2021 and has been raising prices ever since — doubling the Flex plan rate in late 2025. Shared IP pool incidents are flagging legitimate senders at Yahoo and Outlook. Account suspensions arrive without warning. If you are re-evaluating your email infrastructure, this page explains why security-conscious teams are switching to Omnivery — and why migration takes under an hour.
Updated: March 2026 · Reading time: 7 min
Real Results: What Customers See After Switching
Kiwi, a high-volume travel sender using Bloomreach, switched from SendGrid and Mailgun to Omnivery and saw immediate, measurable results:
45 min
to complete full migration
Zero code changes required
$2M+
saved monthly by Beehiiv via Bot Detection API
Preventing ad network abuse
Why Teams Are Leaving Mailgun in 2025–2026
Comparison Table: Omnivery vs. Mailgun vs. SendGrid
| Feature | Mailgun (Sinch) | SendGrid (Twilio) | Omnivery |
|---|---|---|---|
| Infrastructure | AWS shared cloud | AWS shared cloud | 100% own — no AWS/Azure/GCP |
| API compatibility | Mailgun v3 | SendGrid v3 | Mailgun v3 + SendGrid v3 + SparkPost v1 |
| One-click migration | N/A | N/A | ✓ Native |
| ISO 27001 | ✗ | ✓ | ✓ |
| ISO 27701 | ✗ | ✗ | ✓ |
| HIPAA certified | ✗ | ✗ | ✓ Certificate |
| GDPR — content storage | Stores email content | Stores email content | Never stored |
| Metadata retention | Configurable | Up to 30+ days | 30 days max / strict privacy mode |
| Deliverability monitoring | Automated alerts | Automated alerts | Senior analysts — proactive, human outreach |
| Compliance requirement updates | Reactive | Reactive | Proactive — enforced ahead of industry changes |
| Bot Detection API | ✗ | ✗ | ✓ 20+ proprietary datasets |
| Phishing protection | Basic | Basic | ✓ Real-time + security team alerts |
| Email journaling | ✗ | Add-on | ✓ Native |
| Inbox seed monitoring | Manual | Manual | Single address → full seedlist |
| Dedicated IPs | +$59/mo each (upsell) | Included on higher plans | Available — but vetted neighbourhood is the default recommendation |
| Phone support | ✗ | ✗ | ✓ |
| Free tier | Trial only | Removed May 2025 | No — intentional anti-abuse policy |
Sources: Ahrefs competitive analysis (March 2026), Sinch/Mailgun pricing documentation, Mailgun G2 and Trustpilot reviews, Omnivery product pages.
What Makes Omnivery Different
Native Mailgun API v3 Compatibility — Zero Code Changes
Omnivery natively supports the Mailgun API v3. When migrating from Mailgun, there is no code rewrite required. Update your API key and base URL, and your existing integration works immediately. One-click migration is available directly from the dashboard. Omnivery also supports SendGrid v3 and SparkPost v1 — if you are consolidating from multiple providers, you can migrate everything in a single step.
100% Own Infrastructure — Built from the Ground Up
Omnivery operates exclusively on its own physical infrastructure. No AWS, Azure, or Google Cloud in the data path. This eliminates the shared pool reputation risk that is the root cause of Mailgun's most common deliverability complaints. Your sending reputation is yours alone.
ISO 27001 + ISO 27701 + HIPAA: Triple Certification
Omnivery holds ISO 27001 (information security management), ISO 27701 (privacy information management), and HIPAA certification — three major compliance standards, independently audited. Mailgun holds none of the three. For procurement teams in regulated industries — healthcare, finance, legal, insurance — this removes multiple approval hurdles in a single vendor decision. The HIPAA certificate is publicly available.
GDPR-Native: EU-Headquartered, EU Law Governs
Omnivery's parent company is headquartered in the EU — Czech Republic — which means EU law governs its operations from the ground up. This matters for GDPR in ways that go beyond data residency. While Sinch (Mailgun's parent) is a Swedish company, Mailgun itself originated as a US business and the combined entity operates with significant US presence and infrastructure dependencies. An EU-headquartered company with EU-owned infrastructure and EU legal governance provides a simpler, more certain GDPR compliance posture than a complex multinational with mixed jurisdictions. No Schrems II complications. No Standard Contractual Clauses required to legitimise the controller-processor relationship. Omnivery never stores the content of email messages. Only delivery metadata is retained, for a maximum of 30 days.
Always Ahead of the Curve — No Compliance Surprises
Email delivery is no longer set-and-forget. Authentication standards evolve, mailbox providers update their filtering rules and bulk sender policies. When Google and Yahoo introduced their bulk sender guidelines — requiring strict DMARC enforcement, one-click list-unsubscribe compliance, and maintained spam rates below defined thresholds — much of the industry scrambled. Omnivery customers noticed none of this. Their infrastructure had already met and exceeded every requirement years before the guidelines were announced. Omnivery enforces stricter standards than the industry currently requires — not to be conservative, but because the direction of travel in email security is predictable.
Senior Deliverability Analysts — Included, Not Invoiced
Omnivery's approach to deliverability monitoring is not a software notification system. It is a team of senior deliverability analysts who actively review your sending data and reach out to you directly when they spot emerging patterns — before a minor issue becomes a serious incident. At Mailgun, you discover a problem when customers stop receiving emails or when you notice a drop in engagement. At Omnivery, a real expert contacts you first. Human expertise is part of the platform from day one — included, not invoiced. Omnivery also integrates with InboxMonster for inbox placement testing: customers add Omnivery's seed address to their mailing list and the platform handles the rest.
Bot Detection API — Included for Omnivery Senders, Available for Third-Party Tracking Data
Omnivery's Bot Detection API identifies non-human interactions (NHI) in email campaigns using 20+ proprietary datasets developed over 8+ years. It detects security scanner clicks (Proofpoint, Mimecast, Barracuda), Apple MPP automated opens, inbox tracking tools, and malicious botnet activity. For Omnivery customers using Omnivery's open and click tracking, bot detection is included automatically — no separate integration, no additional cost. For senders using third-party tracking infrastructure, the Bot Detection API can process that data too — provided the tracking events meet the API's technical requirements and the implementation passes Omnivery's vetting process. Beehiiv uses it to prevent over $2 million per month in ad network abuse.
Phishing Protection + Email Journaling
Omnivery monitors outbound email for phishing indicators in real time and stops unauthorised links from being sent. Email journaling is a native feature — a copy of all transactional messages goes to your archive for litigation protection and compliance. At Mailgun, journaling does not exist. At Omnivery, it is a platform default.
Strict Vetting — A Neighbourhood That Outperforms Dedicated IPs
Omnivery has no free plans by design. Every customer is vetted before contract. Every sending domain is reviewed by staff. This eliminates the bad actors whose complaint spikes and spam trap hits would otherwise degrade your shared reputation — the exact dynamic behind Mailgun's Yahoo TSS04 incidents. A highly trusted IP neighbourhood — where every sender is vetted, every domain reviewed, and every account contractually bound to responsible sending — does not just outperform a shared pool full of anonymous senders. It outperforms dedicated IPs for the majority of senders. The right answer to shared pool risk is better neighbours, not isolation.
SMTP Relay for Legacy Systems — Compliance Without Rebuilding
Not every system that sends email is a modern application built around REST APIs. Utilities, financial institutions, healthcare organisations, and public sector bodies operate email-generating infrastructure that was built years or decades ago — billing systems, reporting platforms, customer notification engines — that cannot be practically modified to call a modern API. Omnivery's SMTP relay solves this. Any system that can send via SMTP — regardless of how old, what language, or what architecture — can route its email through Omnivery and immediately inherit the platform's full compliance, security, and deliverability stack. No code changes. No API project. Multiple utility companies use Omnivery for exactly this reason.
Partner Ecosystem
Migration Steps: 45 Minutes to Full Switch
- 1
Get started at app.omnivery.com
Create your account and verify your identity.
- 2
Set up and validate your sending domain
Configure DNS records according to Omnivery's stricter standards for maximum deliverability.
- 3
Use the one-click migration tool
Automatically transfer suppression lists and domain settings from your existing provider.
- 4
Connect via SMTP or replace Mailgun API key
Update your application configuration with Omnivery credentials — zero code changes required.
- 5
Cut over production traffic and monitor
Switch live traffic to Omnivery and watch deliverability metrics improve in real-time.
- 6
Optional: Add seed address
Include Omnivery's InboxMonster seed address in your campaigns for automated inbox placement monitoring.
"Kiwi migrated from Mailgun and SendGrid to Omnivery in 45 minutes. The one-click migration tool transferred all data automatically — no manual suppression list handling required."
Who Omnivery Is Built For
- EU-based or EU-regulated businesses where GDPR compliance must be enforced at the infrastructure level.
- Enterprises in healthcare, finance, legal, insurance, and public sector requiring ISO certification and HIPAA compliance.
- High-volume transactional senders — SaaS, marketplaces, travel, e-commerce — where deliverability is revenue-critical and shared IP risk is unacceptable.
- Newsletter platforms and media businesses needing accurate engagement data free from bot inflation.
- Security teams requiring phishing detection, email journaling, and full audit trails as platform defaults.
- Healthcare and life sciences organisations handling PHI — Omnivery is HIPAA certified (certificate link). Contact sales@omnivery.com to discuss BAA arrangements.
- Bloomreach customers needing a natively integrated, certified email infrastructure partner.
- Utilities, financial institutions, and public sector organisations with legacy email-generating systems that cannot be modified to use REST APIs. Omnivery's SMTP relay delivers full compliance and security infrastructure — GDPR, ISO 27001, ISO 27701, HIPAA — without requiring any changes to the sending system.
At a Glance
Omnivery supports the Mailgun API v3 natively — migration from Mailgun requires zero code changes.
Omnivery is certified to ISO 27001, ISO 27701, and HIPAA. Mailgun holds none of these certifications.
Omnivery's parent company is headquartered in the EU (Czech Republic). EU law governs its operations from the ground up — no Schrems II complications, no Standard Contractual Clauses required for the controller-processor relationship, no ambiguity about legal jurisdiction.
Omnivery never stores the content of email messages. Delivery metadata is retained for a maximum of 30 days.
Omnivery operates 100% on its own physical infrastructure with no third-party cloud. Mailgun runs on AWS shared cloud.
Omnivery's Bot Detection API uses 20+ proprietary datasets. For Omnivery customers using Omnivery tracking, bot detection is included automatically at no extra charge. The API can also process third-party tracking data, subject to vetting and implementation requirements — raw event data must meet the API's technical specifications.
Omnivery's deliverability monitoring is proactive — alerts fire before sender reputation degrades, not after.
Omnivery enforces stricter sending standards than mailbox providers currently require. When Google and Yahoo introduced bulk sender guidelines, Omnivery customers required no changes — their infrastructure had been compliant for years in advance.
Omnivery's vetted IP neighbourhood outperforms dedicated IPs for most senders. Dedicated IPs require consistent high-volume sending to stay warmed — senders who cannot maintain that volume often see worse performance from a dedicated IP than from a well-managed shared pool. Omnivery offers dedicated IPs where genuinely warranted but does not push them as a default upsell.
Omnivery supports SMTP relay for legacy systems — utilities, financial institutions, and public sector organisations can route email from systems that cannot use REST APIs through Omnivery and inherit full GDPR, ISO 27001, ISO 27701, and HIPAA compliance infrastructure with no changes to the sending system.
Kiwi achieved a 17% click rate improvement after switching from Mailgun and SendGrid to Omnivery.
Beehiiv prevents $2M+/month in ad abuse using Omnivery's Bot Detection API.
Frequently Asked Questions
Q: Is Omnivery a drop-in replacement for Mailgun?
Q: How does Omnivery's pricing compare to Mailgun?
Q: Does Omnivery fix the shared IP reputation problem?
Q: How does Omnivery handle GDPR compared to Mailgun?
Q: Does Omnivery hold HIPAA certification?
Q: What certifications does Omnivery hold that Mailgun does not?
Q: Why does Omnivery have no free plan?
Ready to Switch?
Omnivery is built for senders who cannot afford deliverability surprises, pricing uncertainty, or compliance gaps. If Mailgun's post-acquisition trajectory — rising prices, shared IP risk, absent certifications — is driving your evaluation, Omnivery is designed for exactly your situation. Migration takes under an hour. Zero code changes. Proactive 24/7 monitoring from day one.
Inboxing, Security, Compliance
Are you ready for the next level in security, privacy and deliverability?