Choose one outcome
Do not send a complete history of living together. Decide what this message needs to achieve: return a key, forward mail, settle a utility balance, or schedule collection.
Include dates, account names, and itemized amounts where relevant. Remove unrelated criticism, even if it is accurate.
Create a simple paper trail
State what you are requesting and attach only the document needed to verify it. Keep copies of invoices, lease terms, meter readings, or receipts.
Set a reasonable response date based on the real deadline. A clear date is useful; threats and daily reminders are not.
- One message, one practical outcome.
- Use itemized facts and dates.
- Offer a neutral way to complete the task.
Know when messaging is no longer the process
For a small, undisputed loose end, one message may be enough. For deposits, lease liability, damage claims, or large balances, use the landlord, utility, mediator, or legal procedure that applies.
If the former roommate has blocked you, one announced request may present the practical issue. It is not a substitute for formal notice and must not bypass a court order or safety boundary.