Sth. like
```
var buf bytes.Buffer
buf.Reset()
fh, err := os.Open("path-to-eml")
if err != nil {
return err
}
_, err = io.Copy(&buf, fh)
fh.Close()
if err != nil {
return err
}
email, err := parsemail.Parse(bytes.NewReader(buf.Bytes()))
if err != nil { // handle error
return err
}
d := gomail.NewDialer(...)
sc, err := d.Dial()
if err != nil {
return err
}
return sc.Send(email.From, []string{email.To}, buf)
```
Or if you don't want to read the whole email into memory (but I think
parsemail already does it, unlike the standard net/mail),
you could create a little helper:
```
type copyWriterTo struct { r io.Reader }
func (cw copyWriterTo) WriteTo(w io.Writer) (int64, err) { return
io.Copy(w, cw.r) }
```
and use it in `sc.Send`, instead of `buf`.
Tamás Gulácsi a következőt írta (2020. szeptember 14., hétfő, 6:17:42
UTC+2):
> Use DialSender returned by gomail.Dial.
> You don't need the parsed message for it, just the from and to addresses,
> and write the contents of the .eml file into the WriterTo as is.
>
> sandip bait a következőt írta (2020. szeptember 14., hétfő, 1:06:50 UTC+2):
>
>> I am using Standard *gomail <https://github.com/go-gomail/gomail>* package
>> for sending mails in Golang. The mail generation part is happing from some
>> other component which i am storing it in a particular location (i.e
>> */path/sample.eml* file). And hence , i have pre-cooked mail body in
>> .EML file which i just want process as a new mail. I am able to put/parse
>> the .EML content by using the *parsemail
>> <https://github.com/DusanKasan/parsemail>* package of *DusanKasan*.
>> There are so many custom headers which i have already set in raw
>> *sample.eml* file content which i want to send. It will be really
>> helpful if i get an example code saying just pass *.eml* file as a input
>> so that mail body will generate/render based on *.eml* file content.
>>
>> You can fine sample EML content string on *.EML
>> <https://play.golang.org/p/mlDANqTLmj9>*Here is my basic mail sending
>> code using *gomail <https://github.com/go-gomail/gomail>*
>>
>> package.m := gomail.NewMessage()
>> m.SetHeader("From", "al...@example.com")
>> m.SetHeader("To", "b...@example.com", "co...@example.com")
>> m.SetAddressHeader("Cc", "d...@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.NewDialer("smtp.example.com", 587, "user", "123456") //
>> Send the email to Bob, Cora and Dan.
>> if err := d.DialAndSend(m); err != nil { panic(err) }
>>
>> Here is my eml parsing code using parsemail *parsemail
>> <https://github.com/DusanKasan/parsemail>* package
>>
>> var reader io.Reader // this reads an email message
>> email, err := parsemail.Parse(reader) // returns Email struct and error
>> if err != nil { // handle error } fmt.Println(email.Subject)
>> fmt.Println(email.From)
>> fmt.Println(email.To)
>> fmt.Println(email.HTMLBody)
>>
>> Thanks & Regards,
>>
>>
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