Mailgun
Email API service with powerful routing, validation, and analytics for developers
Pricing: Freemium - free trial tier available, paid from $15/mo
Best for: Email sending, validation, and routing for developer-built applications
Email Alternatives
SendGrid Alternatives in 2026
Cloud-based email platform for transactional and marketing emails with high deliverability at scale
3 alternatives to SendGrid
Postmark
Transactional email service known for industry-leading deliverability and fast delivery times
Pricing: Freemium — 100 emails/mo free forever; Basic from $15/mo for 10k emails
Best for: Transactional emails where deliverability and speed are critical (password resets, receipts)
Resend
Email API built for developers - send transactional emails with React Email templates and great deliverability
Pricing: Freemium - 3k emails/mo free, paid from $20/mo
Best for: Developer-first transactional email, React Email templates, Next.js apps
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