How to process incoming object in phpmailer?

Question

PHP

This is how the form data is sent to phpmailer:

This is if the form is written in pure js
This is how it is sent if it is sent to jquery:

1) phpmailer cannot recognize the lines

$name = $_POST["name"];
$email = $_POST["email"];
$number = $_POST["tel"];

and sends an empty letter, without this data
2) Everything works, the lines above are correctly defined
I don’t understand php myself
The task is to do without jquery
I already wrote a question on the toaster about how to convert form data into the same form as at jquery, but no one answered.
Perhaps this object can be processed somehow in php

Answer 1

It was necessary to accept not with $_POST , but with php://input

Answer 2

This is your string in json format, so if you want to process it using php, convert it to an array or php object.
json_decode()
UPD: most likely everything is fine with you, you just look for some strange fields in $_POST, send selectmaterial, and look for email, etc. In the code, before assigning, do var_dump($_POST), and see what you got.