Mailgun

Mailgun offers flexible pricing with free tier (100 emails/day), Basic plan ($15 for 10,000 monthly emails), Foundation ($35 for 50,000), Scale ($90 for 100,000), and Enterprise (custom pricing from 2.5M sends). The company splits pricing into Send (email API + SMTP) and Optimize (deliverability tools). Mailgun pricing has remained stable unlike competitors. The service provides SMTP and API access, pay-as-you-go overages, and comprehensive email delivery features.