Você pode tentar bmail , uma linha de comando simples e gratuita SMTP remetente de correio para plataformas Win32. Com o utilitário também gratuito disponível mpack você pode usar o bmail para enviar anexos MIME.
Uso e opções:
Usage: bmail [options]
-s SMTP Server Name
-p SMTP Port Number (optional, defaults to 25)
-t To: Address
-f From: Address
-b Text Body of Message (optional)
-h Generate Headers
-a Subject (optional)
-m Filename (optional) Use file as Body of Message
-c Prefix above file with CR/LF to separate body from header
-d Debug (Show all mail server communications)
Atualização:
Outra alternativa é cmdsendmail , uma das " Ferramentas de Linha de Comando " (código-fonte aberto, < href="http://cmdtools.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=27185"> hospedado no CodePlex.com ):
cmdsendmail is a tool that allows to send e-Mail from your Command Line. It reads it’s settings from an Xml file, which means you can easily use it in a Batch File. For example, include it in your Backup scripts (or any other scheduled task) and have the script send an e-Mail to you whenever the backup task is finished, with the neccessary Logfiles attached.