You Don't Need Another Email Vendor. You Need a Better API Layer.

Here's the problem with email APIs like Resend and SendGrid: they own your email infrastructure. Switch providers? Good luck migrating everything. Void Relay takes a different approach - it sits on top of your SMTP server and gives you a modern developer API without the lock-in.

Think of it as a translation layer. Your SMTP stays yours. Void Relay just makes it painless to use.

Bring Whatever SMTP You Already Have

Gmail for a side project. AWS SES for production. Mailgun for a client's app. Void Relay doesn't care. Connect any SMTP server and start sending emails through a single HTTP request. No migration headaches. No ripping out existing infrastructure.

A REST API That Doesn't Make You Suffer

The API is modeled after Resend's simplicity. One request to send an email. That's it. A TypeScript/JavaScript SDK ships today with full type safety and zero dependencies. Python, Go, Ruby, and PHP SDKs are on the way. Or just use cURL - it's a REST API, so anything that speaks HTTP works.

Real-Time Webhooks and Tracking

You're not sending emails into a void (pun intended). Configure webhooks to get instant notifications on sends, deliveries, bounces, opens, and clicks. Multiple webhook URLs are supported, so you can pipe events to Slack, your database, an analytics tool - wherever you need them.

Edge-First Architecture

Void Relay runs on a global edge network. API requests get processed at the location closest to your SMTP server, which means minimal latency between your API call and the actual email delivery. If your SMTP is in Frankfurt, the request hits Frankfurt. Simple physics.

Analytics That Actually Help You Debug

Failed deliveries are the worst when you're flying blind. Void Relay gives you detailed logs, delivery tracking, and performance analytics in real time. When something breaks at 2 AM, you'll know exactly where it broke.

Pricing That Respects Your Wallet

The free tier includes 2,500 emails per day per API key, with up to 5 API keys - that's 12,500 emails daily at zero cost. Unlimited SMTP servers, full API access, webhooks, and analytics included. Beta users get an even sweeter deal: 5,000 emails per day per API key, locked in forever.

The paid Pro plan bumps you to 20 API keys, adds priority support, advanced analytics, team collaboration, and a 99.9% SLA. No credit card required to start.

Email API