Hi Julian and George,
As mentioned, yes we did remove that function because it promotes insecure user behavior, and also very seldom actually works. No major email provider will allow you to send .exe-files as attachments. A longer discussion is found here http://www.axcrypt.net/blog/avoid-self-decrypting-files/ .
However, if you for whatever reason cannot ask the recipient to download AxCrypt by including the link to the download page in the email with the encrypted attachment, why not just send the user two files? The encrypted attachment and the portable version of AxCrypt 2 (yes, it’s an executable, so it’s just as likely to fail as a “self-decrypting” archive).