Why you might not want to share one email address:

1. Professionalism: Having email addresses with the business domain name shows professionalism and helps establish a brand identity.
2. Organization: Individual email addresses make it easier to manage and organize communications. Each employee can have their own address, allowing for clear assignment of responsibilities and better tracking of who is handling what.
3. Security: Sharing an email address can pose security risks, as sensitive information can be sent to the wrong person. With individual email addresses, each person can be responsible for their own information and privacy.
4. Collaboration: Individual email addresses make it easier to collaborate and communicate with other members of the organization. This can be especially important for small businesses where everyone needs to be on the same page to be successful.
5. Accessibility: Individual email addresses can be accessed from anywhere with an internet connection, making it easier for employees to stay connected and get work done, even when they are not in the office.
6. Reliability: Using a business email address that is hosted by a professional email service provider can ensure reliable and secure delivery of emails, with features such as spam filtering, virus scanning, and backups.

In contrast, using a shared email address through an internet service provider such as Comcast can be less professional, less secure, less organized, and less reliable. By investing in individual email addresses for your business, you can enhance your professionalism, security, and overall effectiveness.