I've written a couple of apps that use Smtp and Pop3 to send and receive binary attachments to each other. I use the internet components that come with D4 and they have been working great until earlier this week. I have been using MIME as the encoding method for the attachments but some users have started manually sending files using their own email clients (Messanger and Outlook Express) to my server application instead of using the software provided. Their files have sometimes been arriving smaller than when initially sent. Exactly the same thing happens to files sent by my apps if I switch from using MIME to UUENCODING So I was wondering if anyone else had done (or knows about) this sort of thing? and what components they may have used? Thanks in advance Nahum Wild Software Developer --------------------------------------------------------------------------- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz