A service contract is not a one-time purchase. It is a running relationship with a seller and an administrator, and both need a way to reach you. The contact details on file are easy to forget once the paperwork is signed, yet they control where renewal notices, service reminders, and other messages are sent for as long as the contract is in force.
Write down what is on file
Note the mailing address, email address, and phone number the contract and the administrator's record show for you. Compare them with what you use today. Any difference is a gap that could delay a notice.
Ask how notices are sent
Find out whether the administrator sends notices by mail, by email, by text, or through an online account, and whether it sends them to more than one channel. Ask whether a returned letter or bounced email triggers any follow-up step, and what that step is.
Update the record when your details change
Update the administrator's record whenever you move, change phone numbers, or switch email providers. Ask for written confirmation of the change. Some administrators require the update in a specific form, so ask for the form rather than assuming a phone call is enough.
Keep a simple file
Store a copy of each update confirmation with your contract papers. If a dispute ever turns on whether a notice reached you, a clear record of your contact details will matter. Our main page has the published-terms overview, and the tables there show the notice and account details each company states in its own documents, so you can check them against what you have on file.