On Wed, 12 Jun 1996, Peggy L. Hamill wrote:

this story was just a plain DOS 6.21 .txt file, written under the Write 
program in win 3.1.
 And just what is "plain text?" (excuse my ignorance, I am still new to 
ML's and things such as this @:)===

Plain text is an ASCII text file, in other words, not in binary format. I 
think your mail program automatically attaches all files as OCTET STREAM 
or something. Try putting the fanfic in the BODY of your message, that 
should make it in plain text format.