Question

C#.Net POP mail from server and download attachments

Asked by: nvms

Hi

I cannot find a working sample of how to log onto a POP3 mail server, check for messages, download the msg and any attachments etc

Please Do Not suggest http://www.codeproject.com/csharp/despop3client.asp as I simply cannot get this to work on my VisualStudio.Net 2003 / Win XP system. The project and source code contain no interface, and when I created one and followed the comment and discussion I found two problems

1)
Pop3Component multipart = (Pop3Component) enumerator.Current;
Response.ClearByte[] b = Convert.FromBase64String(multipart.Data);
Response.ContentType = multipart.ContentType;
Response.AddHeader("content-disposition", multipart.ContentDisposition);
Response.OutputStream.Write(b,0,b.Length);
Response.End();

There is no reference to Response anywhere and I cannot find it in System.Net , .web or anything

2) multipart.Body is not recognised

3) I have messages in the specified pop account but the mail check returns 0 messages waiting

Lots of references on the web to POP DLL's but they are ALL commercial! Isn't there a FREE way of doing it as with SMTP ? Sending mail with attachments is a breeze, just can't seem to find a free POP solution. Full points to a working solution.

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Asked On
2005-08-28 at 08:20:23ID21542698
Tags

pop3

,

attachment

Topic

C# Programming Language

Participating Experts
2
Points
400
Comments
9

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Answers

 

by: SteveGTRPosted on 2005-08-28 at 14:59:47ID: 14772669

I didn't find any problems with the code having bad references. Did you attempt to include the library in your project and following the instructions under the "Code" section?

 

by: SteveGTRPosted on 2005-08-28 at 15:11:05ID: 14772705

I see the one problem with a reference to multipart.Body. I'm going to use multipart.Data for testing.

 

by: nvmsPosted on 2005-08-29 at 02:34:11ID: 14774791

Thanks for your input so far Steve, I have located my entire project here http://www.cottontech.com/test/Pop3.zip (87K) which you are welcome to look at if you get the chance. Are you suggesting I need to compile the library as a separte DLL and instantiate externally ? In my testing, as far as logging on etc, everything seems OK but it reports no mail in the inbox when I know there were 3 waiting (popped later in Outlook OK).

Thanks in advance. Points upped to 350 and all yours for a working project : )  I have removed my email credentials from the Pop3 project above.

 

by: AgariciPosted on 2005-08-29 at 02:42:20ID: 14774816

see this link:
http://www.lumisoft.ee/lsWWW/ENG/Products/Mail_Server/mail_index_eng.aspx?type=download

it has a complete implementation of a mail server and all the sources

hth,
A.

 

by: SteveGTRPosted on 2005-08-29 at 05:28:48ID: 14775410

Yes the original link will compile to a DLL. I created a Windows Application withing the existing project and included a reference to the DLL.

 

by: nvmsPosted on 2005-08-29 at 06:37:01ID: 14775784

Thanks Guys; Agarici's LumiSoft solution looks incredibly versatile and could be perfect, however there doesn't seem to be much documentation on the net for use as a reference in C#. I have made some small steps such as:

using using LumiSoft.Net;
.
.
LumiSoft.Net.POP3.Client.POP3_Client POP = new LumiSoft.Net.POP3.Client.POP3_Client();
POP.Connect("mail.isphost.net.au", 110);
POP.Authenticate("my_username","my_password",false);

but need to know how to exploit the LumiSoft.Net.Mime methods to extract attachments (and of course how to log in and check for messages! )

- But can't get much further as the help files (.chm) all open 'The page cannot be displayed', and as I said there doesn't seem to be anything on the net. Would be great to use this as it also exposes FTP server features and the whole thing looks great. Point split if some help (or even a nice sample project) can be sourced. I have increased the points to 400.

 

by: AgariciPosted on 2005-08-29 at 07:57:34ID: 14776390

there is something wrong with your chm file, since mine works fine

for examples of using mime class you could look into the server source file because it uses mime class to format the message.
it is easy to use it... if i remember correctly you only have to set properties like To, CC, body, subject, etc on a Mime object then just call Construct method, it will return the byte array - the message mime formated.


hth,
A.

 

by: nvmsPosted on 2005-08-29 at 19:00:26ID: 14780909

I will have to put some time aside in the next week or two to examine it. Thanks guys, and especially Steve for his hands on help; I will compile the CodeProject POP client into a DLL and see if that helps. I need a quick solution and only POP at this stage so the first option may prove the simplest to implement. Will work on this : )

 

by: nvmsPosted on 2005-09-02 at 00:30:23ID: 14808211

Thanks Guys, ending up using an old product purchased from Catalyst (SocketTools 3.2) as a Interop COM control. Works a treat.

20120131-EE-VQP-002

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