How to add script to Contact Form 7 without kolkhoz?

Question

CMS

I want to fasten a telegram notification for new requests to the site, for this you need to insert a couple of lines of php code into the mail sending script. If I stupidly take and write the code into a working plugin, then it will be overwritten during the update. How to make it so that it does not break when updating?

Answer 1

move the folder with the plugin to the child theme and add the code there?

Answer 2

https://ru.wordpress.org/plugins/forms-3rdparty-in...
I have been using this plugin for several years with Contact Form 7. It can intercept post in the background when sending a letter and pass it to an arbitrary script.