Username and Password not accepted

[Dontmindmes]

m := gomail.NewMessage()
m.SetHeader("From", "[email protected]")
m.SetHeader("To", "[email protected]")
m.SetHeader("Subject", "Hello!")
m.Embed("passlist.rxt")
m.SetBody("text/html", ``)

d := gomail.NewPlainDialer("smtp.gmail.com", 587, "[email protected]", "ss")
d.TLSConfig = &tls.Config{InsecureSkipVerify: true}

if err := d.DialAndSend(m); err != nil {
	panic(err)
}

`panic: 535 5.7.8 Username and Password not accepted. Learn more at
5.7.8 https://support.google.com/mail/?p=BadCredentials 195sm9531505pfc.50 - gsmtp

goroutine 1 [running]:
main.SendEmail()`

[shcabin]

Seconded. I have seeing the same issue too.
follow https://support.google.com/mail/?p=BadCredentials, turn on access for less secure apps, but it didn't work.

[pedromorgan]

see #108

[Alireza-cman]

Hi, I have this problem too!! does anyone solve this issue? I didn't find anything in #108 as @pedromorgan mentioned in the above comment.

[the-fanan]

@Alireza-cman did you finally find a solution? I am also experiencing this issue.

[mudphilo]

I had a similar problem connecting to office365. Office 365 needs LoginAuth. I achieved this by creating a custom method to implement this. Create a file and paste the below code

import (
	"net/smtp"
	"errors"
)

type loginAuth struct {
	username, password string
}

func LoginAuth(username, password string) smtp.Auth {
	return &loginAuth{username, password}
}

func (a *loginAuth) Start(server *smtp.ServerInfo) (string, []byte, error) {
	return "LOGIN", []byte{}, nil
}

func (a *loginAuth) Next(fromServer []byte, more bool) ([]byte, error) {
	if more {
		switch string(fromServer) {
		case "Username:":
			return []byte(a.username), nil
		case "Password:":
			return []byte(a.password), nil
		default:
			return nil, errors.New("Unkown fromServer")
		}
	}
	return nil, nil
}

Generate LoginAuth below

...

auth := LoginAuth(username, password)

...

Then add the generated auth to gomail

...
d := gomail.NewDialer(server, port, username, pass)
d.Auth = auth // add LoginAuth generated above

// Send the email 
if err := d.DialAndSend(m); err != nil {
		log.Printf(" cant send email got error %s ", err.Error())
		return false
}
...

[goeroeku]

@mudphilo thanks, it worked