Integromat will watch RSS feeds you specify in a Google Sheets spreadsheet for new posts that contain a specific keyword. It will merge all these posts into a single email summary and send it to a specific email address. If you wish to use this template without further settings, you need to create a spreadsheet according to this example. In the RSS column, you specify the RSS feeds you want to watch and in the KEYWORD column the keyword to find.
This is a predefined template that will make the creation of your scenario much easier. Of course, you can always expand and customize the scenario to meet your own individual needs.