Golang: How to UTF8 both subject header and body in email? - email

Question

I'm interested in how to pass string (successfully - in UTF8) containing both subject header and body of email to this function:
func sendEmail(body string) {
c, err := smtp.Dial(".....")
if err != nil {
log.Fatal(err)
}
defer c.Close()
// Set the sender and recipient.
c.Mail(".....")
c.Rcpt(".....")
// Send the email body.
wc, err := c.Data()
if err != nil {
log.Fatal(err)
}
defer wc.Close()
buf := bytes.NewBufferString(body)
if _, err = buf.WriteTo(wc); err != nil {
log.Fatal(err)
}
}
And then I've got here subject header and email body;
body := "Subject: Header string which contains ŽČĆŠĐ in name of user " + name + "!\n"
body += "Content-Type: text/html; charset=\"UTF-8\"\r\nContent-Transfer-Encoding: base64\r\n"
body += "String inside email body which also might contain ŽČĆŠĐ" + year_month_day_hour_minute + " - " + end_of_shift
//function call
sendEmail(body)
I've thought it should run ok ...and it really does display correctly subject header string (in utf8) but for some unknown reason the rest of email body gets displayed in junk form.
I've tried to change a few minor details but nothing really changed in principle.
This is my first Go example so I could easily overlook obvious.
Thanks for any thoughts on the matter!

Answer 1

try:
In your text subject use this function
func cSubject(subject string) string {
//return "=?iso-8859-1?Q?" + subject + "?="
return "=?utf-8?q?" + subject + "?="
}

Answer 2

Hi I successfully sent UTF8 email using golang with the following code
func sendContactUs(name string, email string, userInput string) {
// Sender data.
from := "some#email.address"
password := "some password"
// Receiver email address.
to := []string{
"receipient#email.address",
}
// smtp server configuration.
smtpHost := "smtp.gmail.com"
smtpPort := "587"
raw := `Subject: {name} Contact form on Web
Content-Type: text/plain; charset="UTF-8"
Dear Manager,
We receive a a form submission from webpage
name : {name}
email : {email}
message:
{message}
Kind Regards
XXXX Mailing service team.
`
raw = strings.Replace(raw, "{name}", name, -1)
raw = strings.Replace(raw, "{email}", email, -1)
raw = strings.Replace(raw, "{message}", userInput, -1)
// Message.
message := []byte(raw)
// Authentication.
auth := smtp.PlainAuth("", from, password, smtpHost)
// Sending email.
err := smtp.SendMail(smtpHost+":"+smtpPort, auth, from, to, message)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("Email Sent Successfully!")
}
Please note the line with Content-type: it must start at the very beginning.
In other words, it should not have any prepending blank space.
Also, it must have a blank line after it.
It's a working code. please try it out. If you encounter any problems please let me know.