Go Requires Chilkat v11.0.0+

IMAP Find Emails by Date

See more IMAP Examples

Explains how to find emails by date using the IMAP protocol. Go

    success := false

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    imap := chilkat.NewImap()

    //  Connect to an IMAP server.
    imap.SetSsl(true)
    imap.SetPort(993)
    success = imap.Connect("imap.example.com")
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    //  Login
    success = imap.Login("myLogin","myPassword")
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    //  Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox")
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    //  In the IMAP (Internet Message Access Protocol) protocol, criteria strings are used to search for emails matching specific criteria on the mail server. 
    //  When searching for emails by date, you can use criteria strings to specify the date range you're interested in.
    //  
    //  IMAP provides several options for searching emails by date using criteria strings. Here are the commonly used ones:
    //  
    //  1. BEFORE: Searches for emails sent before a specific date.
    //     Example: BEFORE 01-Apr-2022
    //  
    //  2. ON: Searches for emails sent on a specific date.
    //     Example: ON 01-Apr-2022
    //  
    //  3. SINCE: Searches for emails sent after a specific date.
    //     Example: SINCE 01-Apr-2022
    //  
    //  4. SENTBEFORE: Searches for emails whose date header (sent date) is before a specific date.
    //     Example: SENTBEFORE 01-Apr-2022
    //  
    //  5. SENTON: Searches for emails whose date header (sent date) is on a specific date.
    //     Example: SENTON 01-Apr-2022
    //  
    //  6. SENTSINCE: Searches for emails whose date header (sent date) is after a specific date.
    //     Example: SENTSINCE 01-Apr-2022
    //  

    //  The date format used in IMAP criteria strings is typically a specific format like "DD-Mon-YYYY" (e.g., "01-Apr-2022"), but some servers may also accept other formats 
    //  such as "YYYY-MM-DD". It's essential to check the documentation or specifications of the IMAP server you're working with to ensure compatibility with the 
    //  date format you're using.
    //  
    //  By combining these date criteria strings with other search criteria (such as sender, recipient, subject, etc.), 
    //  you can effectively filter and retrieve emails based on various conditions.
    //  

    //  Search for messages on a specific date.
    //  The date string is DD-Month-YYYY where Month is
    //  Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, or Dec.
    onDate := "SENTON 15-Apr-2024"

    //  Search for messages between two dates.  SENTBEFORE
    //  finds emails sent before a date, and SENTSINCE finds
    //  email sent on or after a date.  The "AND" operation
    //  is implied by joining criteria, separated by spaces.
    betweenDates := "SENTSINCE 12-Apr-2024 SENTBEFORE 15-Apr-2024"

    //  We can choose to fetch UIDs or sequence numbers.
    fetchUids := true

    messageSet := chilkat.NewMessageSet()
    success = imap.QueryMbx(betweenDates,fetchUids,messageSet)
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        messageSet.DisposeMessageSet()
        return
    }

    fmt.Println(*messageSet.ToCompactString())

    //  Download each email in the message set.
    email := chilkat.NewEmail()
    messageCount := messageSet.Count()
    i := 0
    for i < messageCount {
        success = imap.FetchEmail(false,*messageSet.GetId(i),fetchUids,email)
        if success == false {
            fmt.Println(imap.LastErrorText())
            imap.DisposeImap()
            messageSet.DisposeMessageSet()
            email.DisposeEmail()
            return
        }

        fmt.Println(email.Subject())
        //  ...

        i = i + 1
    }

    //  Disconnect from the IMAP server.
    success = imap.Disconnect()

    imap.DisposeImap()
    messageSet.DisposeMessageSet()
    email.DisposeEmail()