Mailgun is one of the long-running developer email services. Now part of Sinch, it offers a familiar REST API, per-domain configuration, and an enterprise-friendly feature set covering email validation, batch sending, and template management. For teams already invested in the Sinch product family or running Mailgun at high volume, the platform remains a defensible choice.
But the Mailgun pricing posture is showing its age in 2026.
Where Mailgun fits well
Mailgun is the right default when:
- Your team is already using Sinch products (SMS, voice, video) and wants operational adjacency
- You need enterprise SLAs with named support and account management
- You're sending consistent volume above 50K/month where Foundation plan economics work
- You value Mailgun Optimize add-ons for inbox placement testing as a separate product
Where Bavimail fits better
The decision flips when:
- You're under 5K/month and don't want a $15 monthly floor or a 100-emails-per-day cap on the free tier
- You want email validation bundled instead of paid separately at $1.20 per 100
- You need inbound email, webhooks, and domain operations on every paid plan without per-feature upgrades
- You're concerned about Mailgun's Flex plan price doubling from $1.00 to $2.00 per 1,000 messages effective December 2025
- You care about inbox placement on shared IPs (one third-party 2026 roundup from Mailtrap reported Mailgun at 71.4% vs a cited industry average of 83.1%)
Pricing across canonical tiers
| Volume | Bavimail | Mailgun | Savings | |---|---|---|---| | 5,000/mo | Free | Basic $15 | $15/mo | | 10,000/mo | Pro $4 | Basic $15 | $11/mo | | 50,000/mo | Growth $20 | Foundation $35 | $15/mo |
Mailgun's free tier caps at 100 emails/day with no monthly limit, which works out to roughly 3,100 emails per month. Bavimail's free tier is 5,000 emails per month with a 200/day cap, covering about 60% more monthly volume.
See the full Bavimail vs Mailgun pricing comparison for a tier-by-tier breakdown with feature coverage including the email validation cost difference.
Which to choose
Choose Mailgun if: you need Sinch enterprise SLAs, multi-product Sinch integration, or your team has existing per-domain Mailgun configuration that would be costly to migrate.
Choose Bavimail if: you want email validation bundled into sending, a higher monthly free allotment for early-stage products, and operational depth at a starting price of $0.
Migration is straightforward: both are REST APIs with similar resource models. Replace the base URL and API key, adjust the JSON shape, and configure your domain.
If you're building for specific use cases: Bavimail for developers details the SDK and REST API. Bavimail for AI agents covers per-agent inbox patterns. Bavimail pricing shows the full plan comparison.