The people who send Certified letters are usually senders who need to prove a notice was mailed and delivered: law firms, courts, government agencies, property managers, lenders and collectors, insurers, employers, and individuals handling personal legal matters. If you have received one, it likely came from one of these senders, and this page explains what each one typically sends and why.
Why Certified Letters Exist at All
A Certified letter is ordinary mail plus an extra service: a mailing receipt, USPS tracking, and a signature at delivery. The sender chooses it because those three records answer the questions that come up later: Was it sent? When? Did someone actually receive it?
Law Firms and Courts
Attorneys send demand letters, settlement communications, and case correspondence where a delivery record matters. Courts and clerks send notices and official documents when the applicable rule allows or requires mailing with documented delivery. Tracking receipts are commonly used as evidence of mailing and delivery attempts.
Government Agencies
Federal, state, and local agencies send official notices, hearing notifications, tax and benefit correspondence, and enforcement letters. Documented delivery reduces later disputes about whether notice was given.
Property Managers and Landlords
Lease violations, notices to vacate, rent demands, deposit correspondence, and entry notices go out with proof attached. A signature record helps close the loop when a tenant says a notice never arrived. Rules for landlord-tenant notices vary by state and situation, so landlords should confirm their requirements with counsel.
Lenders, Collection Agencies, and Financial Institutions
Validation notices, default and foreclosure-related correspondence, account changes, and demand letters are commonly sent with documented delivery. Notice requirements in these areas are specific and fact-dependent; senders should confirm their process with counsel.
Insurance, Healthcare, and HR
Insurers send claim and coverage correspondence where delivery matters. Providers and HR teams send records requests, benefits notices, and employment correspondence. Where a rule requires a specific method, confirm it before relying on any single service.
Individuals
People send Certified letters for personal reasons too: important documents, notices to a landlord or counterparty, or any letter whose arrival they may need to prove later. No business registration or legal purpose is required to use the service.
Received a Certified Letter?
Sign for it, read it, and note any deadline. Avoiding a Certified letter does not make the underlying matter go away, because delivery attempts are documented. If the letter involves a legal issue, consult an attorney before responding.
Send Your Own Certified Letter Online
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Frequently Asked Questions
Who typically sends Certified letters?
Law firms, courts, government agencies, property managers, lenders and collection agencies, insurers, HR departments, and individuals send Certified letters. They choose Certified Mail when they need proof of mailing and a delivery signature.
Why would a law firm send a Certified letter?
Attorneys use Certified Mail to document that correspondence was mailed and delivered. Tracking receipts and signature records can support the file if delivery is later questioned.
Why did I receive a Certified letter?
A sender needed documented proof that a notice reached you. Common senders include attorneys, courts, agencies, lenders, insurers, employers, and landlords. Sign for it, read it, and note any deadline.
Can an individual send a Certified letter?
Yes. Anyone can send Certified Mail for personal or business mail. No business registration or legal purpose is required.
Do all Certified letters mean legal trouble?
No. Many Certified letters are routine business correspondence, such as account notices or policy updates. The common thread is that the sender wanted proof of delivery.
Can I refuse a Certified letter?
A recipient can physically refuse delivery, but the refusal and delivery attempts are documented in USPS tracking. Refusal does not usually erase the sender’s proof that delivery was attempted.