Mailrun provides an automated Azure‑based email sending platform that handles domain registration, DNS configuration, and inbox provisioning, delivering high deliverability through a decentralized architecture with low domain load. The service offers transparent month‑to‑month pricing, no initiation fees, and scales to support 100–400 inboxes across multiple domains for small to medium businesses.
Funding
Funding not disclosed
Founders
Product
Problem
Businesses that need to send large volumes of email often face high upfront costs, complex domain and inbox setup, and poor deliverability due to overloaded domains and non‑enterprise IP pools. Traditional Azure email providers charge large initiation fees and require manual configuration, making it difficult for small teams to scale outreach quickly and reliably.
Solution
Mailrun offers a fully automated Azure‑based email sending platform that eliminates the need for manual domain registration, DNS configuration, and inbox provisioning. The service registers domains, points DNS to Cloudflare, creates address permutations, and provides CSV exports, all within hours of sign‑up. By limiting each domain to a low number of inboxes (10 per domain) the platform reduces domain load by 80‑90 % compared with competitors, resulting in healthier sender reputations and better inbox placement, even through secure email gateways such as Barracuda and Mimecast. All infrastructure runs on Microsoft’s enterprise‑grade IP pools, delivering high deliverability without the typical four‑figure initiation fees. Pricing is transparent, month‑to‑month, and scales with the number of inboxes and domains a customer needs.
Target Audience
Mailrun targets small to medium businesses, e‑commerce operators, SaaS marketers, and sales teams that require reliable high‑volume email outreach without the overhead of complex infrastructure setup.
Features
- Automated domain registration and DNS setup with Cloudflare integration
- Rapid provisioning of email address permutations and CSV export for immediate use
- Decentralized inbox architecture (10 inboxes per domain) to lower domain load and improve deliverability
- Azure enterprise IP pools that can penetrate secure email gateways (SEGs) like Barracuda and Mimecast
- No implementation or initiation fees; flexible month‑to‑month subscription plans
- Scalable plans offering 100–400 inboxes and 10–40 domains, with optional BYOD (bring‑your‑own‑domain) option
- Transparent public pricing and easy plan upgrades as business needs grow