We don’t send files. We encrypt files, and share keys to files so they can be shared (by other means).
You’ll have to contact the person who wants you to send files.
AxCrypt has a key sharing feature letting you add recipients by email address, who when they receive the file can open it with their own AxCrypt password (that’s you, the recipient).
Key sharing embeds the shared key into the file. The file must thus first be key shared with the recipient, then sent or file shared (that’s the other person, the sender). Please note that AxCrypt does not share or send the actual file. To see a quick instructional video explaining how to use key sharing, please view https://www.youtube.com/watch?v=9z3KOZD-Yks .