How to name REST resource for similar endpoints (findById / findByEmail)?

I have 2 endpoints as shown below, but I cannot use the endpoint urls like this:

@GetMapping("/{email}")public ResponseEntity<Void> findByEmail(@PathVariable String email) {}

@GetMapping("/{id}")public ResponseEntity<Void> findById(@PathVariable long id) {}

Should I use something like @GetMapping("mail/{email}") ?