Package mail implements parsing of mail messages.
For the most part, this package follows the syntax as specified by RFC 5322 and extended by RFC 6532. Notable divergences:
* Obsolete address formats are not parsed, including addresses with embedded route information. * Group addresses are not parsed. * The full range of spacing (the CFWS syntax element) is not supported, such as breaking addresses across lines. * No unicode normalization is performed.
var ErrHeaderNotPresent = errors.New("mail: header not in message") func ParseAddressList(list string) ([]*Address, error)
ParseAddressList parses the given string as a list of addresses.
package main
import (
"fmt"
"log"
"net/mail"
)
func main() {
const list = "Alice <[email protected]>, Bob <[email protected]>, Eve <[email protected]>"
emails, err := mail.ParseAddressList(list)
if err != nil {
log.Fatal(err)
}
for _, v := range emails {
fmt.Println(v.Name, v.Address)
}
}
func ParseDate(date string) (time.Time, error)
ParseDate parses an RFC 5322 date string.
Address represents a single mail address. An address such as "Barry Gibbs <[email protected]>" is represented as Address{Name: "Barry Gibbs", Address: "[email protected]"}.
type Address struct {
Name string // Proper name; may be empty.
Address string // user@domain
} func ParseAddress(address string) (*Address, error)
Parses a single RFC 5322 address, e.g. "Barry Gibbs <[email protected]>"
package main
import (
"fmt"
"log"
"net/mail"
)
func main() {
e, err := mail.ParseAddress("Alice <[email protected]>")
if err != nil {
log.Fatal(err)
}
fmt.Println(e.Name, e.Address)
}
func (a *Address) String() string
String formats the address as a valid RFC 5322 address. If the address's name contains non-ASCII characters the name will be rendered according to RFC 2047.
An AddressParser is an RFC 5322 address parser.
type AddressParser struct {
// WordDecoder optionally specifies a decoder for RFC 2047 encoded-words.
WordDecoder *mime.WordDecoder
} func (p *AddressParser) Parse(address string) (*Address, error)
Parse parses a single RFC 5322 address of the form "Gogh Fir <[email protected]>" or "[email protected]".
func (p *AddressParser) ParseList(list string) ([]*Address, error)
ParseList parses the given string as a list of comma-separated addresses of the form "Gogh Fir <[email protected]>" or "[email protected]".
A Header represents the key-value pairs in a mail message header.
type Header map[string][]string
func (h Header) AddressList(key string) ([]*Address, error)
AddressList parses the named header field as a list of addresses.
func (h Header) Date() (time.Time, error)
Date parses the Date header field.
func (h Header) Get(key string) string
Get gets the first value associated with the given key. It is case insensitive; CanonicalMIMEHeaderKey is used to canonicalize the provided key. If there are no values associated with the key, Get returns "". To access multiple values of a key, or to use non-canonical keys, access the map directly.
A Message represents a parsed mail message.
type Message struct {
Header Header
Body io.Reader
} func ReadMessage(r io.Reader) (msg *Message, err error)
ReadMessage reads a message from r. The headers are parsed, and the body of the message will be available for reading from msg.Body.
package main
import (
"fmt"
"io/ioutil"
"log"
"net/mail"
"strings"
)
func main() {
msg := `Date: Mon, 23 Jun 2015 11:40:36 -0400
From: Gopher <[email protected]>
To: Another Gopher <[email protected]>
Subject: Gophers at Gophercon
Message body
`
r := strings.NewReader(msg)
m, err := mail.ReadMessage(r)
if err != nil {
log.Fatal(err)
}
header := m.Header
fmt.Println("Date:", header.Get("Date"))
fmt.Println("From:", header.Get("From"))
fmt.Println("To:", header.Get("To"))
fmt.Println("Subject:", header.Get("Subject"))
body, err := ioutil.ReadAll(m.Body)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s", body)
}
© Google, Inc.
Licensed under the Creative Commons Attribution License 3.0.
https://golang.org/pkg/net/mail/