Settings
By default this is turned on - i.e. all your notes will be encrypted.
You may optionally share an unencrypted version of a note by using the frontmatter checkbox property:
share_unencrypted: ✅Make sure it’s a Checkbox type:

If you turn this off, then you can encrypt an individual note by using the frontmatter property:
share_encrypted: ✅Default note expiry
See Self-deleting notes.