Primary-source research
When is Certified Mail required?
Verified federal and state workflows where Certified Mail is required or expressly permitted—separated clearly, with deadlines, recipients, exceptions, and source links.
Required vs. permitted
Every guide distinguishes a mandatory Certified Mail route from one accepted delivery option.
Primary sources
Each record links directly to the controlling rule or official agency guidance reviewed.
Operational limits
Separate-copy rules, provider restrictions, and product constraints are called out before the CTA.
3 verified guides
Banking & unclaimed property
Certified Mail required
New JerseyNew Jersey unclaimed-property due diligence
Certified Mail with return receipt is required for qualifying property of $50 or more.
Verified 2026-08-01 · Primary-source guide
Certified Mail required
New YorkNew York unclaimed-funds certified follow-up
A certified return-receipt follow-up is required for qualifying property over $1,000.
Verified 2026-08-01 · Primary-source guide
Certified Mail required
FloridaFlorida safe-deposit contents certificate
Certified Mail is required for the copy of the contents certificate.
Verified 2026-08-01 · Primary-source guide
3 verified guides
Vehicle & asset recovery
Certified Mail required
TexasTexas vehicle storage first notice
Certified or registered mail with return receipt is required for the conventional mailed notice.
Verified 2026-08-01 · Primary-source guide
Certified Mail required
ColoradoColorado private-tow notice
Both first-class and Certified Mail with return receipt are required.
Verified 2026-08-01 · Primary-source guide
Certified Mail permitted
CaliforniaCalifornia post-repossession disposition notice
Certified Mail is accepted, but personal service and first-class mail are also allowed.
Verified 2026-08-01 · Primary-source guide
4 verified guides
Construction & liens
Certified Mail permitted
CaliforniaCalifornia preliminary construction notice
Certified Mail is an accepted method, not the only permitted method.
Verified 2026-08-01 · Primary-source guide
Certified Mail permitted
FloridaFlorida construction notice to owner
Certified Mail is one of the statute’s accepted service methods.
Verified 2026-08-01 · Primary-source guide
Certified Mail permitted
WashingtonWashington right-to-lien notice
Certified or registered mail is accepted; documented personal service is an alternative.
Verified 2026-08-01 · Primary-source guide
Certified Mail permitted
TexasTexas unpaid labor or materials notice
Certified Mail is accepted alongside personal and traceable private delivery.
Verified 2026-08-01 · Primary-source guide
4 verified guides
Foreclosure & associations
Certified Mail required
FloridaFlorida HOA intent-to-lien notice
Registered or Certified Mail with return receipt and a separate first-class copy are required.
Verified 2026-08-01 · Primary-source guide
Certified Mail required
TexasTexas residential default and cure notice
Certified Mail is expressly required; return receipt is not stated in § 51.002(d).
Verified 2026-08-01 · Primary-source guide
Certified Mail required
TexasTexas foreclosure sale notice
Certified Mail is expressly required for the debtor copy.
Verified 2026-08-01 · Primary-source guide
Certified Mail required
CaliforniaCalifornia trustee sale notice
Registered or Certified Mail is required for specified recipients.
Verified 2026-08-01 · Primary-source guide
3 verified guides
Relocation
Certified Mail permitted
Federal / Uniform Relocation Assistance and Real Property Acquisition Policies Act programsURA 90-day displacement notice
Certified or registered First-Class Mail with return receipt is allowed instead of personal service.
Verified 2026-08-01 · Primary-source guide
Certified Mail permitted
Federal / Uniform Relocation Assistance and Real Property Acquisition Policies Act programsURA General Information Notice
Certified or registered First-Class Mail with return receipt is allowed instead of personal service.
Verified 2026-08-01 · Primary-source guide
Certified Mail permitted
Federal / Uniform Relocation Assistance and Real Property Acquisition Policies Act programsURA relocation eligibility notice
Certified or registered First-Class Mail with return receipt is allowed instead of personal service.
Verified 2026-08-01 · Primary-source guide
1 verified guide
Medical claims
Research, not legal advice. Rules change, exceptions matter, and an accepted mailing method may be only one step in a larger notice process. Verify the current source, facts, address, contents, and deadline with qualified counsel before relying on a guide.
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