Cheaper Resend alternative

There are roughly 25-40 viable competitors in the transactional email space, ranging from legacy SMTP services (SendGrid, Mailgun) to newer entrants targeting developers. The core pain point isn't features—it's price elasticity. Resend charges $0.10 per email after free tier, which compounds fast at scale; competitors like Loops, EmailJS, and plain SMTP relays offer 70-90% cheaper rates but either lack the modern API ergonomics makers expect or suffer from spotty deliverability. The actual gap sits between budget providers and premium ones: there's no dominant player offering Resend-grade developer experience at 40-50% of the cost. A new entrant should focus on three things: (1) transparent, linear pricing with no hidden per-email fees, (2) first-class webhook and API design that makes Resend devs want to switch, and (3) aggressive SLA guarantees (99.8%+ uptime, <5min send guarantee) to eliminate the reliability fear factor. The secondary opportunity is targeting non-English markets where Resend's pricing hits even harder relative to local purchasing power.