To share an encrypted file via email to someone else, you use the ‘share’ function in AxCrypt. You enter the recipients email address and the file will be encrypted in a way that the recipient can open it too. However, remember that the email address is just for identification (just like you sign in to AxCrypt with an email address). You still have to send the file itself to the recipient using your regular email software.
There are videos explaining all this on our web site, https://www.axcrypt.net/ .