Free mini crm for working with landing pages?

Question

PHP

Most of all I am interested in working with applications.
Namely, you need to accept 3-4 fields from the post request + several arbitrary fields, which can then be edited, saved on the site, sent notifications to the mail and VK (it's not necessary here, if not, I'll add it myself).
Scatter all this into some categories like “not read”, “in processing”, “done”, etc.
Working with all this from different accounts.
And all this in php.
Are there any free options?

Answer 1

This is done on yii2 or another php framework in 2 hours. You can also write in pure php.

Answer 2

Now, for similar purposes, laraadmin is running around

Answer 3

Bitrix 24