exchangesmtp

exchangesmtp

Simple Go library for sending emails through Microsoft Exchange servers using LOGIN authentication.

Why?

Exchange dropped support for PLAIN auth back in 2017. This library implements LOGIN auth mechanism that still works.

Install

go get github.com/yourusername/exchangesmtp

Usage

Quick send

qs := exchangesmtp.NewQuickSender(
    "user@company.com",           // username
    "password",                    // password
    "smtp.company.com:587",        // server
    "sender@company.com",          // from
    []string{"recipient@company.com"}, // to
)

err := qs.Send("Subject", "Body text")

With attachments

ms := exchangesmtp.NewMailSender("user@company.com", "password", "smtp.company.com:587")

mail := exchangesmtp.Mail{
    MT:      exchangesmtp.HTML,
    From:    "sender@company.com",
    To:      []string{"recipient@company.com"},
    Subject: "Check this out",
    Body:    "<h1>Hello!</h1>",
    Attachment: []exchangesmtp.AttachmentFile{
        {
            Name: "report.pdf",
            Body: fileBytes,
        },
    },
}

err := ms.Send(mail)

Features

• LOGIN authentication for Exchange
• Plain text and HTML emails
• File attachments
• UTF-8 support
• Quoted-printable encoding

License

MIT