(Classic ASP) IMAP Find Emails by Date

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

Note: This example requires Chilkat v11.0.0 or greater.

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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

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

set imap = Server.CreateObject("Chilkat.Imap")

' Connect to an IMAP server.
imap.Ssl = 1
imap.Port = 993
success = imap.Connect("imap.example.com")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

' Login
success = imap.Login("myLogin","myPassword")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

' Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

' 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 = 1

set messageSet = Server.CreateObject("Chilkat.MessageSet")
success = imap.QueryMbx(betweenDates,fetchUids,messageSet)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( messageSet.ToCompactString()) & "</pre>"

' Download each email in the message set.
set email = Server.CreateObject("Chilkat.Email")
messageCount = messageSet.Count
i = 0
Do While i < messageCount
    success = imap.FetchEmail(0,messageSet.GetId(i),fetchUids,email)
    If (success = 0) Then
        Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
        Response.End
    End If

    Response.Write "<pre>" & Server.HTMLEncode( email.Subject) & "</pre>"
    ' ...

    i = i + 1
Loop

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

%>
</body>
</html>