Mailing+ changes laravel website

I will commission the following functionalities to be made and implemented on a 3-year-old site made in laravel:

- mailing to users - the site has a feature to save favorite content (posts, searches). The functionality is to send an email to the user whenever there is an entry on the site that matches the criteria they have saved in their watched (like ebay and watched searches) - solution to be agreed with the contractor - preferred integration and implementation with an external tool within one order,

- Formatting of entries - users have the ability to add entries - currently in the form of text without formatting - the order concerns changes within the form of adding an entry consisting of adding a field “title” - with predefined formatting different from the already present content field, and an “add section” button - adding more fields “title” and “content” - this is to allow the creation of entries consisting of sections, each containing a title and content - different from each other in formatting, the content of the titles is to form a table of contents at the top of the entry page,