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Welcome to ByteSend

ByteSend is a powerful, open-source email delivery platform designed for developers. Send transactional and marketing emails reliably with a simple REST API, SMTP support, and comprehensive analytics.

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Getting Started

Add Domain

Add domains to send emails. We’ll guide you through verification.

Create API Key

Generate an API key to start sending emails from your app.

Send Your First Email

Send a test email using the REST API or SDK.

SMTP Support

Prefer SMTP? Connect via our SMTP server.

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Authentication & Security

API Authentication

Generate API keys and authenticate your requests.

GitHub OAuth

Sign in with your GitHub account.

Google OAuth

Sign in with your Google account.

Discord OAuth

Sign in with your Discord account.

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Account & Billing

Plans & Pricing

Choose the plan that fits your needs (Free, BASIC, or LIFETIME).

Plan Management

Manage team members, settings, and account preferences.

Admin Operations

Advanced billing and team administration features.

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Notifications & Alerts

Set up real-time notifications for your team across multiple platforms:

Notification Providers

Overview of all notification options.

Discord Alerts

Receive alerts in your Discord server.

Slack Integration

Send alerts to your Slack workspace.

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Sending & Campaigns

Contact Books

Organize subscribers into lists and manage contacts.

Campaigns & Broadcasts

Send newsletters and marketing emails to your contact lists.

Double Opt-In

Verify new subscribers before adding them to your list.

Campaign Personalization

Use contact properties to personalize campaign content.

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Deliverability

Deliverability & Reputation

Keep bounce and complaint rates healthy to stay out of spam.

React Email

Build beautiful emails with React Email and ByteSend.

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Integration Guides

Webhooks

Receive real-time event notifications.

Error Codes

Understand and handle every API error code.

Rate Limits

Understand API rate limits and retry strategies.

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API Reference

API Documentation

Explore the complete ByteSend REST API with interactive examples.

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Self-Hosting

Want to run ByteSend on your own infrastructure?

Self-Hosting Guide

Complete guide to self-host ByteSend with Docker or bare-metal.

SMTP Server Setup

Set up the ByteSend SMTP server.

Security

Security considerations for self-hosted deployments.

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Key Features

  • Easy Integration: Simple REST API, JavaScript/Python SDKs, and SMTP support
  • Real-time Analytics: Track delivery, opens, clicks, bounces, and more
  • Team Collaboration: Add team members with role-based access control
  • Flexible Billing: Pay-as-you-go or lifetime access
  • Developer Friendly: Full API documentation, code examples, and webhooks
  • Open Source: Self-host or use our managed cloud platform
  • Notifications: Discord, Slack, Teams, Telegram, and custom webhooks

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Need Help?