// Attach a file to the email - may be a relative path. The file name that is sent in
// the email will be the base file name.
func (this *EM) Attach(fn string) *EM {
this.doAltSetup()
bfn := filepath.Base(fn)
ext := filepath.Ext(fn)
ct := mime.TypeByExtension(ext)
attch := mailbuilder.NewSimplePart()
attch.AddHeader("Content-Type", ct)
attch.AddHeader("Content-Transfer-Encoding", "base64")
attch.AddHeader("Content-Disposition", fmt.Sprintf(`attachment; filename=%q`, bfn))
//read and encode attachment
content, _ := ioutil.ReadFile(fn)
encoded := base64.StdEncoding.EncodeToString(content)
//split the encoded file in lines (doesn't matter, but low enough not to hit a max limit)
nbrLines := len(encoded) / this.lineMaxLength
var buf bytes.Buffer
for i := 0; i < nbrLines; i++ {
buf.WriteString(encoded[i*this.lineMaxLength:(i+1)*this.lineMaxLength] + "\n")
}
buf.WriteString(encoded[nbrLines*this.lineMaxLength:])
attch.Content = buf.String()
this.Mixed.AddPart(attch)
return this
}
// Send a HTML body with the email.
func (this *EM) HtmlBody(s string) *EM {
this.doAltSetup()
html := mailbuilder.NewSimplePart()
// add content/headers to html and text
// html.AddHeader("Content-Type", "text/html; charset=utf8")
// html.AddHeader("Content-Transfer-Encoding", "quoted-printable")
html.AddHeader("Content-Type", "text/html; charset=us-ascii")
html.Content = s
this.Alt.AddPart(html)
return this
}