Go
Go
Fetch a Range of POP3 Messages
See more POP3 Examples
Demonstrates the Chilkat MailMan.FetchRange method, which retrieves a range of messages from the POP3 mailbox and appends them to an EmailBundle. The arguments are keepOnServer, headersOnly, numBodyLines, a zero-based inclusive startIndex and endIndex, and the EmailBundle. This example fetches the first five messages.
Background: Fetching a range instead of everything is useful for paging through a large mailbox, or resuming after an interruption — download messages 0–99, then 100–199, and so on. Combined with
headersOnly, it lets you build a quick message-list view without pulling full bodies and attachments up front.Chilkat Go Downloads
success := false
// Demonstrates the MailMan.FetchRange method, which retrieves a range of messages from the
// POP3 mailbox and appends them to an EmailBundle. The arguments are keepOnServer,
// headersOnly, numBodyLines, startIndex, endIndex, and the EmailBundle. The indexes are
// zero-based and inclusive.
mailman := chilkat.NewMailMan()
// Configure the POP3 server connection.
mailman.SetMailHost("pop.example.com")
mailman.SetMailPort(995)
mailman.SetPopSsl(true)
mailman.SetPopUsername("user@example.com")
mailman.SetPopPassword("myPassword")
// Fetch the first 5 messages (indexes 0 through 4), full bodies, leaving them on the server.
// keepOnServer=true, headersOnly=false (fetch the entire message).
// Note: numBodyLines only applies when headersOnly is true (it sets how many lines of the
// body to include along with the headers). When headersOnly is false, the entire message
// is fetched and numBodyLines is ignored.
bundle := chilkat.NewEmailBundle()
success = mailman.FetchRange(true,false,0,0,4,bundle)
if success == false {
fmt.Println(mailman.LastErrorText())
mailman.DisposeMailMan()
bundle.DisposeEmailBundle()
return
}
n := bundle.MessageCount()
fmt.Println("Fetched ", n, " messages.")
email := chilkat.NewEmail()
var i int
for i = 0; i <= n - 1; i++ {
success = bundle.EmailAt(i,email)
fmt.Println(email.Subject())
}
// Note: Explicitly connecting/authenticating is optional. Chilkat MailMan automatically
// connects and authenticates -- using the property settings above -- whenever a server
// operation requires it. Calling the explicit connect/authenticate methods can still be
// helpful to determine whether a failure occurs while connecting or while authenticating.
mailman.DisposeMailMan()
bundle.DisposeEmailBundle()
email.DisposeEmail()