Finally reproduced with:
curl --data-urlencode "email=foo@bar.com" --data-urlencode "message=foo-foo-foo" --data-urlencode "name=foo" -H "Content-Type: application/x-www-form-urlencoded" "https://stevenreina.com/.netlify/functions/send-email"
Could you add some logging in your functions: [Support Guide] Why is my function taking long or timing out? or share the code?