Unosend
Send transactional + marketing email w/ 99.9% deliverability
Unosend launched on December 4, 2025 with 205 votes, #124 of 11,628 launches that month and more than 95% of that year's launches.
What it does
The best email API for developers. Send transactional and marketing emails with 99.9% deliverability. Simple REST API, competitive pricing, and 5,000 free emails/month. Better than Resend & SendGrid. Start free today.
Email infrastructure that just works. Send transactional emails with a simple API.
Unosend is the email API built for product teams and enterprises. Send transactional emails and track from one place. From sending agents to delivery logs, credits to SMTP - all the tools to get emails delivered fast. Separate transactional mail, notifications, and updates in one view. Own infrastructure with Warmed IPs. Emails land in the inbox, not spam. See every event as it happens - sends, opens, clicks, and bounces. Run high-volume streams from a warmed IP with reputation controls. Password resets, order confirmations, verification codes. Deliver critical emails in under 3 seconds. The core tools for sending, monitoring, and protecting transactional email at scale. Built exclusively…from unosend.co
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Resend2023 · resend.com · ▲1,325An entire collection of pre-built components with a much faster development experience.
Mailercloud Email API PlatformMar 2026 · mailercloud.com · ▲1651,000+ Emails per Second with 99%+ Deliverability
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