Need advice on a settlement offer… More responses plz?

Base your offer on the original amount; it depends on how delinquent the account is and what State you are in as to how much to offer.

How delinquent is when you last made any sort of payment.

The State will determine if you are running close to the Statute of Limitations for the debt.

It really doesn’t matter if you use USPS or another delivery service; that’s up to you; but, yes, get delivery confirmation either way.