Having an Employer Identification Number (EIN) to register for SMS marketing

Hello @CharlesD15 ,

I would recommend going through these articles to get a better understanding of how the dedicated phone number works:

• Registering your account for SMS
• SMS marketing overview

Replies from contacts will be handled on an automated basis, so it wouldn't be a matter of you directly receiving the responses and managing them.

For more info regarding SMS functionality: 

• Getting started with SMS (PDF download)
• SMS marketing best practices
• SMS marketing while respecting quiet hours
• Enabling SMS for landing page sign up forms
• Importing SMS contacts list