Sign-in or Register
Also, to REGISTER you will need the following information:
1. Valid email address
2. 7-digit account number - it will be on your bill
3. 6-character activation code - it will be on your bill
NOTE: Customers have experienced difficulties registering by using previous account number or activation code; these are no longer valid.
To walk you through registration, watch our tutorial video
If you have any questions or need assistance, please:
- Read the CSS Portal FAQs
- Complete our Billing Inquiry Form to contact us online
- Call Customer Service at (617) 989-7800