Self-hosted Email Sending Service
An open-source mail sending service you can use to send emails from your own server. No dependencies on AWS SES, SendGrid, Mailgun, or any database or Redis.
Features
SMTP Sending
Send emails using SMTP with reliable delivery to major email providers.
Authentication
Secure your email server with password authentication.
DKIM & SPF Protection
Protect your domain and IP address with DKIM, SPF, and DMARC records.
Easy to Use
Getting Started
First-time setup is simple with the interactive init command:
This will:
- Detect your network interfaces (IPv4 and IPv6)
- Generate DKIM keys
- Help you set up a configuration file
- Generate DNS records for your domain
After initialization, start the SMTP server:
Configuration
The configuration file is a simple JSON file:
"port": 25,
"host": "localhost",
"username": "user",
"password": "password",
"domain": "example.com",
"ip": ["192.0.2.1", "2001:db8::1"],
"dkim": {
"privateKey": "-----BEGIN PRIVATE KEY-----\\n...\\n-----END PRIVATE KEY-----\\n",
"publicKey": "-----BEGIN PUBLIC KEY-----\\n...\\n-----END PUBLIC KEY-----\\n",
"selector": "default"
}
}
DNS Configuration
For maximum deliverability, TinkSES helps you configure your DNS with:
SPF Record
Specifies which IP addresses can send email for your domain
DKIM Record
Adds a digital signature to verify email authenticity
DMARC Record
Policy for handling emails that fail SPF/DKIM checks
TinkSES generates these records during initialization and provides guidance on adding them to your DNS configuration.
Ready to start sending emails?
Get started with TinkSES today and take control of your email sending infrastructure.