The Mailgun Alternative with Multi-ESP Redundancy & Zero Overages
Avoid Mailgun's punitive overage billing and unpredictable invoices. CentricSell Mail lets you send millions of transactional emails through your own provider accounts or servers with flat predictable pricing.
Predictable Zero-Overage Invoices
Mailgun bills you per 1,000 emails once you exceed your plan tier, leading to surprise $500+ bills. CentricSell Mail never bills per email.
Independent Sender Reputation
Instead of depending solely on Mailgun's shared IP pool, connect Amazon SES or deploy a dedicated server on your own VPS for full IP reputation ownership.
Provider Failover Protection
If Mailgun experiences an outage or temporary greylisting, CentricSell Mail automatically shifts your outbound traffic to AWS SES or your backup relays.
Built-In Deliverability Enforcement
Every domain must have verified SPF, DKIM, and DMARC before mail can be sent, protecting your sender reputation from day one.
Side-by-Side Comparison
How CentricSell Mail compares to Mailgun (Sinch) on core architectural guarantees.
| Feature | Mailgun (Sinch) | CentricSell Mail |
|---|---|---|
| Email Sending Volume | Strict monthly send caps; $1.00+ / 1k email overages | Unlimited emails on every plan (only restricted by unique contacts) |
| Pricing Model | Monthly base + per-thousand overage fees | Flat subscription with unlimited sends (restricted only by unique contacts) |
| Outage Protection | Single provider (Mailgun outages block delivery) | Multi-ESP routing across SES, SendGrid & Mailgun |
| Own Server / VPS Support | Not supported | Automated SSH deployment on any VPS |
| Data Encryption | Platform managed | Envelope-encrypted secrets (AES-GCM) |
Cost & Savings Breakdown
Estimated monthly costs based on published 2026 provider pricing tiers.
| Monthly Volume | Mailgun (Sinch) | CentricSell Mail | Your Annual Savings |
|---|---|---|---|
| 100,000 emails / mo | $75 / mo | $29 / mo (CentricSell flat plan) | Save $552 / yr |
| 500,000 emails / mo | $380 / mo | $79 / mo (CentricSell flat plan) | Save $3,612 / yr |
| 1,000,000 emails / mo | $700 / mo | $79 / mo (CentricSell flat plan) | Save $7,452 / yr |
| 2,500,000 emails / mo | $1,400 / mo | $79 / mo (CentricSell flat plan) | Save $15,852 / yr |
Frequently Asked Questions
Can I keep using Mailgun while switching to CentricSell Mail?
Yes! You can add your Mailgun API credentials inside CentricSell Mail alongside Amazon SES. CentricSell Mail will route through both or use Mailgun as a fallback.
Ready to scale your transactional & bulk email?
Get started with CentricSell Mail in minutes. Bring your existing AWS SES, SendGrid, or Mailgun credentials, or deploy onto your own dedicated VPS with verified SPF, DKIM, and rDNS.