Thanks for your reply.
We are triggering the mail from dotnet application from windows to outlook mac os version (User-Agent: Microsoft-MacOutlook/18.104.22.168416 )
But we could get the mail with mail attachement in outlook 2007,2010,2013 version using windows XP OS.
Dear All, We are triggering the mail with attachments from application to outlook 2013 . Mail is sent to corresponding person but the file attachment is not shown in outlook . we could get the same mail with attachments in webmail . The issue is file attachment is not shown in outlook 2013...