Java

IMAP Find Emails by Date

See more IMAP Examples

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

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

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

    CkImap imap = new CkImap();

    // Connect to an IMAP server.
    imap.put_Ssl(true);
    imap.put_Port(993);
    success = imap.Connect("imap.example.com");
    if (success == false) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Login
    success = imap.Login("myLogin","myPassword");
    if (success == false) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success == false) {
        System.out.println(imap.lastErrorText());
        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.
    String 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.
    String betweenDates = "SENTSINCE 12-Apr-2024 SENTBEFORE 15-Apr-2024";

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

    CkMessageSet messageSet = new CkMessageSet();
    success = imap.QueryMbx(betweenDates,fetchUids,messageSet);
    if (success == false) {
        System.out.println(imap.lastErrorText());
        return;
        }

    System.out.println(messageSet.toCompactString());

    // Download each email in the message set.
    CkEmail email = new CkEmail();
    int messageCount = messageSet.get_Count();
    int i = 0;
    while (i < messageCount) {
        success = imap.FetchEmail(false,messageSet.GetId(i),fetchUids,email);
        if (success == false) {
            System.out.println(imap.lastErrorText());
            return;
            }

        System.out.println(email.subject());
        // ...

        i = i+1;
        }

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