How can I parse WebKitFormBoundary in netlify functions?

My problem is that I send a record of type FormData to my netlify function.

Form code:

const onSubmitWithReCAPTCHA = async (e) => {
  const action =
  const data = new FormData(
  const token = await recaptchaRef.current.executeAsync()
  data.set("g-recaptcha-response", token)
  fetch(action, {
    method: "post",
    body: data,
  }).then((_response) => {
    return navigate("/")

That is my WebKitFormBoundary which arrives in the netlify function:

Content-Disposition: form-data; name="bot-field"
Content-Disposition: form-data; name="form-name"
Content-Disposition: form-data; name="email"
Content-Disposition: form-data; name="g-recaptcha-response"

How can I resolve this WebKitFormBoundary in the netlify function to extract the email as a string?
Unfortunately I have not found an example on the Internet…

hi there, sorry to be slow to get back to you - does this work locally? This might go a little bit beyond what we can debug, but if you tell us more about what you are trying to accomplish, maybe someone who is not a Netlify Support Staff member has some ideas.