Click here to Skip to main content
13,633,537 members
Click here to Skip to main content
Add your own
alternative version

Stats

370.9K views
5.3K downloads
79 bookmarked
Posted 30 Mar 2002
Licenced Public Domain

Simple MAPI.NET

, 30 Mar 2002
Rate this:
Please Sign up or sign in to vote.
Usage of the simple MAPI API.

Sample Image - simplemapidotnet.jpg

Abstract

As you know, .NET has SMTP email support built-in. For some special environments, the usage of e.g. the "Simple MAPI' API is prefered.

Details

This API can be called like most other Win32 APIs with 'PInvoke'. By reading the MSDN documentation: Platform SDK - Simple MAPI and some hints from the C++ include header file MAPI.h, we can declare the calls in C# like:

[DllImport( "MAPI32.DLL", CharSet=CharSet.Ansi)]
private static extern int MAPIDeleteMail( IntPtr session, IntPtr winhandle,
                                      string id, int flags, int reserved );

For sending email with 'MAPISendMail', the structure 'MapiMessage' has to be filled with pointers to sub-structures like 'MapiRecipDesc'. For this, I used the System.Runtime.InteropServices.Marshal class:

Marshal.SizeOf(), Marshal.AllocHGlobal(),
Marshal.StructureToPtr(), Marshal.PtrToStructure(),
Marshal.DestroyStructure(), Marshal.FreeHGlobal()

Most SimpleMAPI functions are 'wrapped' in a handy class (MapiApi.cs):

public class Mapi
  {
  // Session
  public bool Logon( IntPtr winhandle )
  public void Reset()
  public void Logoff()

  // Sending
  public void AddRecip( string name, string address, bool cc )
  public void Attach( string filepath )
  public bool Send( string subject, string text )

  // Finding
  public bool Next( ref MailEnvelop env )

  // Reading
  public string Read( string id, out MailAttach[] aat )
  public bool Delete( string id )
  public bool SaveAttachm( string id, string filename, string savepath )

  // Addressing
  public bool SingleAddress( string label, out string name, out string addr )
  }

A small (e.g. console) client could do just this few steps:

Mapi ma = new Mapi();
ma.Logon( IntPtr.Zero );
ma.AddRecip( "anybody@anywhere.org", null, false );
ma.Send( "Subject", "Mail text here" );
ma.Logoff();

Sample App

The source for a sample GUI (Windows Form) client and a console client are included in the download.

Limitations

All code was tested only on Windows XP with MS Outlook XP in the internet-mode. On this system, some security warnings show-up if accessing MAPI. Any feedback for other environments (especially Exchange) are very welcome!

License

This article, along with any associated source code and files, is licensed under A Public Domain dedication

Share

About the Author

NETMaster
Web Developer
Switzerland Switzerland
No Biography provided

You may also be interested in...

Comments and Discussions

 
Generalwon't work with XP + Outlook 2002/2003 Pin
topikpl16-Sep-04 21:17
membertopikpl16-Sep-04 21:17 
GeneralRe: won't work with XP + Outlook 2002/2003 Pin
Craigus_H10-Jan-05 7:15
memberCraigus_H10-Jan-05 7:15 
QuestionHow to make a script read new mails automatically ? Pin
faizq1-Sep-04 19:38
memberfaizq1-Sep-04 19:38 
QuestionWhat condition for MAPI? Pin
jewlin3-Feb-04 16:31
memberjewlin3-Feb-04 16:31 
GeneralUse in commercial application. Pin
Abrian14-Jan-04 23:28
sussAbrian14-Jan-04 23:28 
QuestionPassword ignored? Pin
banduraj8-Jan-04 6:45
memberbanduraj8-Jan-04 6:45 
AnswerRe: Password ignored? Pin
Jan Pichler22-May-04 12:22
sussJan Pichler22-May-04 12:22 
GeneralAdd repipientS Pin
Harald Geißelhart4-Jan-04 7:32
memberHarald Geißelhart4-Jan-04 7:32 
GeneralRe: Add repipientS Pin
NETMaster4-Jan-04 14:02
memberNETMaster4-Jan-04 14:02 
QuestionNice Article - Bulk Mail ? Pin
Braulio Díez23-Sep-03 0:59
memberBraulio Díez23-Sep-03 0:59 
GeneralAOL v8 Problem Pin
mike1orb18-Sep-03 16:20
membermike1orb18-Sep-03 16:20 
GeneralExtended MAPI to modify emails being sent Pin
Di Edwards29-May-03 18:46
sussDi Edwards29-May-03 18:46 
GeneralRe: Extended MAPI to modify emails being sent Pin
NETMaster30-May-03 0:19
memberNETMaster30-May-03 0:19 
GeneralRead *.eml files Pin
AlexCode22-May-03 12:17
memberAlexCode22-May-03 12:17 
GeneralRe: DllImport Pin
NETMaster23-Jan-03 14:25
memberNETMaster23-Jan-03 14:25 
GeneralRe: DllImport Pin
NETMaster26-Jan-03 12:21
memberNETMaster26-Jan-03 12:21 
GeneralMAPI Service Pin
fadi17-Dec-02 5:29
memberfadi17-Dec-02 5:29 
GeneralRe: MAPI Service Pin
NETMaster17-Dec-02 6:15
memberNETMaster17-Dec-02 6:15 
GeneralRe: MAPI Service Pin
ChainsawDon27-Feb-05 2:03
memberChainsawDon27-Feb-05 2:03 
GeneralVery Cool Pin
Anonymous11-Nov-02 14:33
sussAnonymous11-Nov-02 14:33 
Questionhow about other folders? Pin
Anonymous19-Oct-02 10:02
sussAnonymous19-Oct-02 10:02 
AnswerRe: how about other folders? Pin
NETMaster20-Oct-02 22:50
memberNETMaster20-Oct-02 22:50 
GeneralExchange Pin
Anonymous26-Sep-02 14:03
sussAnonymous26-Sep-02 14:03 
GeneralGreat sample Pin
Anonymous2-Sep-02 1:24
sussAnonymous2-Sep-02 1:24 
GeneralBug with OE when saving attachment Pin
NETMaster31-Jul-02 6:45
memberNETMaster31-Jul-02 6:45 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

Permalink | Advertise | Privacy | Cookies | Terms of Use | Mobile
Web01 | 2.8.180712.1 | Last Updated 31 Mar 2002
Article Copyright 2002 by NETMaster
Everything else Copyright © CodeProject, 1999-2018
Layout: fixed | fluid