This article describes how to save all email messages’ attachments to disk. The messages are downloaded using Mail.dll library and POP3 protocol.<\/p>\n
The first thing you need to know is that email attachments are downloaded along with the email message<\/strong>. This means that invoking GetMessageByUID<\/em> method is going to download entire email message including all attachments.<\/p>\n Mail.dll exposes all attachments as well-known .NET collections. There are 4 collections that may contain attachments:<\/p>\n You should use IMail.Attachments<\/em> collection to get all attachments. Every attachment is represented by MimeData<\/em> object.<\/p>\n You can also save attachment to stream: void MimeData.Save(Stream stream)<\/em>.\n
\r\nusing Limilabs.Mail;\r\nusing Limilabs.Mail.MIME;\r\nusing Limilabs.Client.POP3;\r\n\r\nclass Program\r\n{\r\n static void Main(string[] args)\r\n {\r\n Pop3 pop3 = new Pop3();\r\n pop3.Connect("pop3.example.com");\r\n pop3.Login("user", "password");\r\n\r\n foreach (string uid in pop3.GetAll())\r\n {\r\n var eml = pop3.GetMessageByUID(uid);\r\n IMail email = new MailBuilder()\r\n .CreateFromEml(eml);\r\n\r\n Console.WriteLine(email.Subject);\r\n\r\n foreach (MimeData mime in email.Attachments)\r\n {\r\n mime.Save(@"c:\\" + mime.SafeFileName);\r\n }\r\n }\r\n\r\n pop3.Close();\r\n }\r\n};\r\n<\/pre>\n\r\n' VB.NET\r\n\r\nImports Limilabs.Mail\r\nImports Limilabs.Mail.MIME\r\nImports Limilabs.Client.POP3\r\n\r\nPublic Module Module1\r\n Public Sub Main(ByVal args As String())\r\n\r\n Using pop3 As New Pop3()\r\n pop3.Connect("pop3.example.com")\r\n pop3.Login("user", "password")\r\n\r\n Dim uids As List(Of Long) = pop3.GetAll()\r\n\r\n For Each uid As Long In uids\r\n Dim eml = pop3.GetMessageByUID(uid)\r\n Dim email As IMail = New MailBuilder() _\r\n .CreateFromEml(eml)\r\n Console.WriteLine(email.Subject)\r\n\r\n For Each mime As MimeData In email.Attachments\r\n mime.Save("c:\\" + mime.SafeFileName)\r\n Next\r\n Next\r\n pop3.Close()\r\n End Using\r\n\r\n End Sub\r\nEnd Module\r\n\r\n<\/pre>\nAccessing attachment’s data<\/h2>\n
\nYou can directly access attachment’s data<\/strong> as stream using MimeData.GetMemoryStream()<\/em> method or as byte array using MimeData.Data<\/em> property.<\/p>\nProcess emails embedded as attachments<\/h2>\n