Deliverability & Control At Scale
Looking for a proven email API? Choose Mailgun for powerful, scalable infrastructure with trusted performance and advanced developer controls. MailerSend is built for teams with simpler sending needs.
Deliverability
Mailgun’s deliverability suite includes inbox placement testing, email validation, and dynamic IP pools to help increase engagement.
Inbox placement testing tools, validation, and dynamic IP pools.
Achieve higher engagement and ROI through advanced deliverability tools with Mailgun Optimize.
Reach recipient inboxes reliably when paired with best-practice sending.
Reliability
With 99.99% uptime and uptime SLAs available, Mailgun easily scales to high volumes as you grow. Detailed logs, robust API/SMTP, and long retention windows make debugging and analytics straightforward at any size.
Trust your infrastructure with enterprise SLAs covering uptime and platform reliability.
Access extensive logs and analytics to optimize performance.
Debug and monitor effectively, no matter your volume.
Compliance
Mailgun keeps message data in your chosen region (EU or US), supporting GDPR and data-sovereignty needs.
Meet compliance needs with regional data residency.
Get peace of mind with industry certifications.
Supports GDPR compliance, HIPAA-ready workflows (with BAA), SOC 2 compliance, and ISO 27001–aligned security practices.
Reach more of your list with Mailgun
This comparison prioritizes deliverability, reliability, and data residency so teams can match tools to their use case. Mailgun leads for scalability, free email sending, controls, and compliance.
Stats
Mailgun is built on proof, not promises. Average Mailgun customers experience:
reduction in average cost to send email.
increase in open rates.
increase in click-through-rate.
Stars on all major review platforms
average delivery rate from deliverability services customers, beating the industry average of 85%
average bounce rate well under the industry average bounce rate of 2%
For us, at the volume we’re sending – every fraction of a percentage means a potential customer, and as a community of designers, it’s our job to create meaningful touchpoints. High deliverability ensures that our messages and our reach are seen; any improvement in our email program has a huge effect on our business.
“When we look at deliverability on our end – Mailgun is the first line of defense if anything goes wrong.”
Mailgun has great ability in email delivery. It’s also really reliable as I have not heard my website users complaining about not receiving emails. The sort of new intuitive design makes me like Mailgun even more!
Why Sinch Mailgun?
Both platforms offer advantages—Mailgun excels with deliverability, SLAs, and compliance.
Choose Mailgun if you want:
Developer-first REST API and SDKs in 5+ languages
Advanced deliverability optimization, regional data residency, and deep analytics
Transparent pricing with free tier (100 emails/day)
Advanced deliverability and inbox placement testing
Why MailerSend?
MailerSend is ideal for teams seeking simplicity and SMS.
Choose MailerSend if you want:
A team-friendly UI with drag-and-drop templates and transactional A/B testing
Both email and SMS messaging from one provider with SMS available in select regions (US/CA)
Fast setup and collaborative tools for small business or startups
FAQS
Mailgun offers send-time optimization, advanced validation APIs, dynamic IP pools, and enterprise-grade deliverability tooling. MailerSend provides more basic deliverability analytics and email verification.
Yes. Mailgun includes 99.99% uptime SLAs on higher tiers, suited for time-sensitive or high-volume workloads.
Mailgun provides a free plan with 100 emails/day. MailerSend also offers a free plan to send up to 500 emails per month for free.
Mailgun supports regional data processing to keep message data in the selected region (EU or US). MailerSend offers EU hosting options.
All of Mailgun’s email API and SMTP Relay endpoints are fully documented for developers. Visit our developer docs for quickstart guides, API references, and sample code.
Mailgun’s Email API powers transactional email at scale, while Mailjet (also part of Sinch Email) provides a full marketing suite. Learn more about transactional email with Mailgun or see how marketers use Mailjet for campaigns.
Yes. Mailgun supports both transactional and high-volume marketing use cases, with dedicated IPs, granular analytics, and robust API controls.
