How to send an email with attachments in Go

问题

I have found this library and have managed to send an attachment in an empty email but not to combine text and attachments.

https://github.com/sloonz/go-mime-message

How can it be done?

回答1:

I ended up implementing it myself: https://github.com/scorredoira/email

Usage is very simple:

m := email.NewMessage("Hi", "this is the body")
m.From = "from@example.com"
m.To = []string{"to@example.com"}

err := m.Attach("picture.png")
if err != nil {
    log.Println(err)
}

err = email.Send("smtp.gmail.com:587", smtp.PlainAuth("", "user", "password", "smtp.gmail.com"), m)

回答2:

I prefer to use https://github.com/jordan-wright/email for email purposes. It supports attachments.

Email for humans

The email package is designed to be simple to use, but flexible enough so as not to be restrictive. The goal is to provide an email interface for humans.

The email package currently supports the following:

From, To, Bcc, and Cc fields

Email addresses in both "test@example.com" and "First Last " format

Text and HTML Message Body

Attachments

Read Receipts

Custom headers

More to come!

回答3:

I created gomail for this purpose. It supports attachments as well as multipart emails and encoding of non-ASCII characters. It is well documented and tested.

Here is an example:

package main

func main() {
    m := gomail.NewMessage()
    m.SetHeader("From", "alex@example.com")
    m.SetHeader("To", "bob@example.com", "cora@example.com")
    m.SetAddressHeader("Cc", "dan@example.com", "Dan")
    m.SetHeader("Subject", "Hello!")
    m.SetBody("text/html", "Hello <b>Bob</b> and <i>Cora</i>!")
    m.Attach("/home/Alex/lolcat.jpg")

    d := gomail.NewPlainDialer("smtp.example.com", 587, "user", "123456")

    // Send the email to Bob, Cora and Dan.
    if err := d.DialAndSend(m); err != nil {
        panic(err)
    }
}

回答4:

Attachements in the SMTP protocol are sent using a Multipart MIME message.

So I suggest you simply

create a MultipartMessage
set your text in the fist part as a TextMessage (with "Content-Type", "text/plain")
add your attachements as parts using AddPart.

来源：https://stackoverflow.com/questions/11075749/how-to-send-an-email-with-attachments-in-go

标签

smtp