Mail Sender adapter to process text file attachment

Hi Experts,

I have requirement to process the text file attachment from Mail and process it to ERP side.I have did the same for XML attachment.In File adapter I can specify the delimiters and all. But how can I specify the same for Mail adapter.It is throwing mapping runtime error. What adapter need to be used? I am using version 7.5 single stack.

Can anyone suggest about this?

Thanks in Advance

Pallavi