Programming model You are working for a marketing company that specializes in helping companies to market their products. You are asked to write a python program that will do the following: Create a web crawler that will visit a webpage when you provide a URL. From there, the web crawler will follow each new link it finds on that page and extract email addresses and save it to a database. Send marketing information to the email address automatically one by one to make sure it does not go to the spam folder. If there is any wrong or inactive email the system will remove it from the database.