Update a field by email using API ?

hello

I wondering if is possible to update a specific user field by email and how.

My goal would be to decrease a value each time an email is received from a specific email address coming from a remote server. So if I have created a custom field "cb_myfield" with inside the value "100", I would like update this value to "99" after receiving the email.

any clue ?

thank

How are the emails being sent? There's triggers for CBs email form, but for an email solution outside of CB you'll have to completely write custom code to handle this.