Cross Reference: /prebuilts/go/linux-x86/src/net/mail

`Name`	`Date`	`Size`
Up to higher level directory
`example_test.go`	21-Oct-2016	`1.5K`
`message.go`	21-Oct-2016	`13.9K`
`message_test.go`	21-Oct-2016	`13.1K`