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go / smtp で添付ファイル付きメール送信
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| package main | |
| import ( | |
| "crypto/tls" | |
| "fmt" | |
| "net/mail" | |
| "net/smtp" | |
| "github.com/scorredoira/email" | |
| ) | |
| const ( | |
| MAIL_SUBJECT = "mail subject" | |
| MAIL_BODY = "body" | |
| FROM_NAME = "from_name" | |
| FROM_ADDRESS = "[email protected]" | |
| TO_ADDRESS = "[email protected]" | |
| CSV_FILENAME = "test.csv" | |
| ) | |
| func buildCSV() string { | |
| return "asdf,fuga,piyo" | |
| } | |
| func sendMail() error { | |
| m := email.NewMessage(MAIL_SUBJECT, MAIL_BODY) | |
| m.From = mail.Address{Name: FROM_NAME, Address: FROM_ADDRESS} | |
| m.To = []string{TO_ADDRESS} | |
| if err := m.AttachBuffer(CSV_FILENAME, []byte(buildCSV()), false); err != nil { | |
| return err | |
| } | |
| auth := smtp.PlainAuth("", "[email protected]", "password", "smtp.gmail.com") | |
| tlsconfig := &tls.Config{ | |
| InsecureSkipVerify: true, | |
| ServerName: "smtp.gmail.com", | |
| } | |
| conn, err := tls.Dial("tcp", "smtp.gmail.com:465", tlsconfig) | |
| if err != nil { | |
| fmt.Println("tls dial error") | |
| return err | |
| } | |
| c, err := smtp.NewClient(conn, "smtp.gmail.com") | |
| if err != nil { | |
| fmt.Println("smtp client error") | |
| return err | |
| } | |
| if err := c.Auth(auth); err != nil { | |
| fmt.Println("smtp auth error") | |
| return err | |
| } | |
| // To && From | |
| if err = c.Mail("[email protected]"); err != nil { | |
| fmt.Println("smtp from error") | |
| return err | |
| } | |
| if err = c.Rcpt("[email protected]"); err != nil { | |
| fmt.Println("smtp rcpt error") | |
| return err | |
| } | |
| // Data | |
| wd, err := c.Data() | |
| if err != nil { | |
| fmt.Println("smtp data error") | |
| return err | |
| } | |
| _, err = wd.Write(m.Bytes()) | |
| if err != nil { | |
| fmt.Println("smtp write error") | |
| return err | |
| } | |
| err = wd.Close() | |
| if err != nil { | |
| fmt.Println("smtp close error") | |
| return err | |
| } | |
| c.Quit() | |
| return nil | |
| } | |
| func main() { | |
| err := sendMail() | |
| if err != nil { | |
| panic(err) | |
| } | |
| } |
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