Go
Go
Fetch a Set of POP3 Messages by UIDL
See more POP3 Examples
Demonstrates the Chilkat MailMan.FetchUidlSet method, which retrieves the messages whose UIDLs are listed in a StringTable and appends them to an EmailBundle. The arguments are the UIDL StringTable, headersOnly, numBodyLines, and the EmailBundle. This example fetches two specific messages by UIDL.
Background: This is the efficient way to download a selected subset of a mailbox in one call — exactly the pattern for an incremental client: list the mailbox UIDLs, compare against the ones you've already stored, and fetch only the new UIDLs as a set. It avoids re-downloading messages you already have while still pulling everything new in a single operation.
Chilkat Go Downloads
success := false
// Demonstrates the MailMan.FetchUidlSet method, which retrieves the messages whose UIDLs are
// listed in a StringTable and appends them to an EmailBundle. The arguments are the UIDL
// StringTable, headersOnly, numBodyLines, and the EmailBundle. The messages remain on the
// server.
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")
// Build the set of UIDLs to fetch.
uidls := chilkat.NewStringTable()
uidls.Append("0000000123abcdef")
uidls.Append("0000000124abcdef")
// Fetch the listed messages (full bodies) into a bundle.
// 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.FetchUidlSet(uidls,false,0,bundle)
if success == false {
fmt.Println(mailman.LastErrorText())
mailman.DisposeMailMan()
uidls.DisposeStringTable()
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()
uidls.DisposeStringTable()
bundle.DisposeEmailBundle()
email.DisposeEmail()