github.com/sters/gomail

Gomail

This is an actively maintained fork of go-mail/gomail, Shopify/gomail and includes fixes and improvements for a number of outstanding issues. The current progress is as follows:

• Timeouts and retries can be specified outside of the 10 second default.
• Proxying is supported through specifying a custom NetDialTimeout.
• Filenames are properly encoded for non-ASCII characters.
• Email addresses are properly encoded for non-ASCII characters.
• Embedded files and attachments are tested for their existence.
• An io.Reader can be supplied when embedding and attaching files.
• Context support.
• Middleware support.
• Remove ruby dependency about bin/style.
• Error definitions.
• Parallel testing.

Introduction

Gomail is a simple and efficient package to send emails. It is well tested and documented.

Gomail can only send emails using an SMTP server. But the API is flexible and it is easy to implement other methods for sending emails using a local Postfix, an API, etc.

It requires Go 1.19 or newer.

Features

Gomail supports:

• Attachments
• Embedded images
• HTML and text templates
• Automatic encoding of special characters
• SSL and TLS
• Sending multiple emails with the same SMTP connection

Documentation

https://pkg.go.dev/github.com/sters/gomail

Examples

See the examples in the documentation.

FAQ

x509: certificate signed by unknown authority

If you get this error it means the certificate used by the SMTP server is not considered valid by the client running Gomail. As a quick workaround you can bypass the verification of the server's certificate chain and host name by using SetTLSConfig:

package main

import (
	"crypto/tls"

	"github.com/sters/gomail"
)

func main() {
	d := mail.NewDialer("smtp.example.com", 587, "user", "123456")
	d.TLSConfig = &tls.Config{InsecureSkipVerify: true}

	// Send emails using d.
}

Note, however, that this is insecure and should not be used in production.

Contribute

Contributions are more than welcome! See CONTRIBUTING.md for more info.

Change log

See CHANGELOG.md.

License

MIT