Case Study: Omnisend achieves 99% delivery rate and 2.4X growth with Mailgun

Omnisend - Customer Case Study

Omnisend is an omnichannel marketing platform that helps eCommerce businesses manage customer communications across multiple digital channels. As they scaled, their email sending on Amazon SES created friction—slow per-domain onboarding API calls and technical confirmation emails that customers ignored—causing delays and constraining growth.

Omnisend switched to Mailgun and used its Deliverability Services and a dedicated Technical Account Manager to automate onboarding, remove the confusing verification step, and provision dedicated IPs for reliable sending. The change delivered a 99% delivery rate, supported 2.4x growth in 2018, and created a seamless experience that strengthened Omnisend’s service and customer credibility.

Omnisend

Paulius Milisauskas

VP of Customer Operations