J-M-L:
where does this file come from?
from sdcard of w5100
outsider:
At the bottom of the reply page (NOT quick reply), you see Attachments and other options, click it and then click browse, find the "test.txt" file in your file system and attach it to your reply.
its just a plain text file.i always check the content of the text.txt file,it never changed,and the length of it is 5 only for hello. maybe theres a problem with my laptop or has s virus.