Self-hosted Chatmail: Unencrypted email support?

If I use a self-hosted Chatmail as my mail server, is it possible to configure it to send and receive unencrypted emails?

A more recent commit has removed the above feature: feat!: ignore passthrough_sender and passthrough_recipients to elimin… · chatmail/relay@43ae9fe · GitHub

Thanks for your reply. It seems that it’s not possible to use non-encrypted messages in chatmail. I’ll look for other suitable services.