SendGrid vs Mailgun vs Resend — Honest 2026 Comparison

Who Should Read This Product leaders at transactional email platforms evaluating competitive positioning. Engineering teams selecting a provider for customer notification systems. SaaS founders building on top of email infrastructure. Anyone comparing SendGrid, Mailgun, and Resend to understand where each vendor sits in the 2026 market. We've written this for teams making strategic decisions about email delivery—whether you're choosing a provider, benchmarking your own offering, or planning prod