California Certified Mail Requirements Are Changing in 2027: What AB 2789 Means for Child Custody Mediation Notices
California is changing how courts can provide certain child custody and visitation mediation notices.
Governor Gavin Newsom signed Assembly Bill 2789 (AB 2789) on August 22, 2026. The new law amends California Family Code §3176, which currently requires covered mediation notices to be sent by Certified Mail, Return Receipt Requested, postage prepaid, to the last known address.
Beginning January 1, 2027, courts will have several authorized ways to provide these mediation notices instead of relying on Certified Mail, Return Receipt Requested as the required method, but the effective date matters.
The existing Certified Mail requirement remains important through December 31, 2026. Courts and legal professionals should not interpret the passage of AB 2789 to mean the current mailing requirement has already disappeared.
AB 2789 also does not eliminate Certified Mail requirements throughout California. The legislation changes a specific notice requirement under Family Code §3176.
For courts, law firms, government agencies, and organizations responsible for compliance mail, the change is an important reminder. The correct delivery method depends on the type of notice, the law governing it, and when that law takes effect.
What Is California AB 2789?
AB 2789 is a new California law concerning notice of mediation in certain contested child custody and visitation proceedings.
Under California law, when custody or visitation is contested, covered matters may be set for mediation. Family Code §3176 addresses who must receive notice of that mediation and how the notice is provided.
Under the law in effect during 2026, §3176 requires the notice to be sent using Certified Mail, Return Receipt Requested, postage prepaid, to the recipient's last known address.
AB 2789 replaces that single required delivery method with several authorized methods beginning January 1, 2027. The change is narrow but important.
It should not be read as a general California law allowing every legal notice to move from Certified Mail to regular mail or electronic delivery. AB 2789 specifically amends Family Code §3176 and the mediation notices governed by that section.
What Does California Family Code §3176 Require Today?
For the remainder of 2026, the existing version of Family Code §3176 remains important.
The current statute requires notice of mediation to be provided to the parties and other specified recipients. The notice must be sent by Certified Mail, Return Receipt Requested, postage prepaid, to the last known address. Each part of that requirement matters.
- Certified Mail creates a USPS tracking number and provides a record associated with the mailing.
- Return Receipt Requested adds delivery and signature documentation beyond basic Certified Mail.
- Postage prepaid means the required postage must be paid when the notice is sent.
- The last known address identifies where the notice must be directed under the current statute.
For organizations responsible for legal or compliance mail, requirements like these demonstrate why it is important to identify the required level of mailing evidence before a mailpiece is prepared.
Important: The Requirement Does Not Change Until January 1, 2027
AB 2789 was signed in August 2026, but organizations should not apply the new notice options early.
Through December 31, 2026: The existing Certified Mail, Return Receipt Requested requirement under Family Code §3176 remains applicable.
Beginning January 1, 2027: The amended statute allows courts to use several authorized methods to provide written notice of mediation.
This transition date is one of the most important parts of the new law.
What Changes Under AB 2789 on January 1, 2027?
Beginning January 1, 2027, Family Code §3176 will no longer rely on Certified Mail, Return Receipt Requested as the sole required method for providing the covered mediation notice.
Instead, written notice may be provided through one of several methods.
|
Through December 31, 2026 |
Beginning January 1, 2027 |
|
Certified Mail, Return Receipt Requested |
Multiple authorized notice methods |
|
Postage prepaid |
Mail remains an available method |
|
Sent to the last known address |
Express mail and overnight delivery are permitted |
|
Physical Certified Mail requirement |
Facsimile transmission may be used |
|
Mailing and Return Receipt documentation |
Certain qualifying electronic service is permitted |
Under the amended statute, written notice of mediation may be provided:
- By court staff when all parties are present for a court hearing.
- By court staff when a party is present at the courthouse.
- As part of a notice of hearing or court order filed by the court clerk, provided to a party, and served on the other party.
- By mail, express mail, overnight delivery, or facsimile transmission.
- By qualifying electronic service.
Electronic service is permitted for parties represented by counsel. For self-represented parties, consent is required, subject to the applicable California electronic-service provisions. The result is a significant change in workflow.
Instead of one required mailing method, courts will have several ways to deliver the covered notice depending on the circumstances.
Why Did California Change the Certified Mail Requirement?
The Judicial Council of California sponsored AB 2789 and explained that relying exclusively on Certified Mail created additional costs and restricted courts' ability to use technology to provide notices.
The Judicial Council also raised concerns that relying on a single physical delivery method could increase the amount of time parties wait to receive notice and potentially delay access to court services.
AB 2789 therefore moves this particular notice requirement away from a Certified-Mail-only model and toward a multiple-method notice model. That distinction is important.
The legislation does not establish that Certified Mail is no longer useful for legal notices. Instead, California determined that this particular mediation notice should no longer be limited to one mandatory delivery method. Courts will have more flexibility beginning in 2027.
AB 2789 Does Not Eliminate Certified Mail Requirements in California
This may be the most important point for California businesses and legal professionals to understand. AB 2789 does not repeal California's Certified Mail requirements as a whole.
California statutes and regulations contain many different notice requirements covering different industries, proceedings, government functions, and types of correspondence.
Some may require Certified Mail. Others may call for regular mail, personal service, electronic delivery, proof of mailing, proof of delivery, or another form of notice.
AB 2789 changes the rules for the mediation notices governed by Family Code §3176. It should not automatically be applied to another California legal notice just because that notice is also sent by mail.
The specific statute, regulation, court rule, order, or other governing requirement should determine how an important notice is prepared and delivered.
Certified Mail Can Still Provide Valuable Documentation
Beginning January 1, 2027, Family Code §3176 will permit notice by mail rather than requiring Certified Mail, Return Receipt Requested as the exclusive mailing method. That does not make mailing documentation irrelevant.
For legal, government, tax, financial, property, and other important communications, organizations may need records showing when a mailing was prepared, when it entered the USPS mailstream, its tracking activity, and when delivery occurred.
Depending on the applicable requirement and the organization's needs, USPS Certified Mail can provide useful documentation such as:
- A unique USPS tracking number
- USPS tracking activity
- Evidence associated with USPS acceptance and processing
- Delivery information
- Electronic Return Receipt when purchased
- Recipient signature information when the applicable service is selected
The appropriate level of proof depends on the mailing. A requirement for proof of mailing is different from a requirement for tracking, which is different from a requirement for proof of delivery or a recipient signature. Organizations should determine what documentation is required before selecting the mailing service.
What AB 2789 Means for California Courts and Legal Professionals
The January 1, 2027 effective date gives California courts time to review their existing mediation-notice procedures.
Workflows that currently default to Certified Mail, Return Receipt Requested for notices governed by §3176 may need to be updated to reflect the additional methods permitted under the amended law.
Templates, internal procedures, mailing systems, and staff guidance may also need to distinguish between notices sent before January 1, 2027 and those sent after the new provisions take effect.
Family-law attorneys should also pay close attention to the effective date. The fact that AB 2789 has been signed does not mean the new notice methods apply immediately. For notices governed by the existing version of §3176 during 2026, the current statutory language remains important.
The change also reinforces a broader lesson for legal operations: a mailing system should not assume that one delivery method applies to every notice in a particular state. California alone has many different mailing and service requirements.
Managing High-Volume California Court and Compliance Mail
Changes in mailing laws can have a larger operational impact when an organization sends hundreds or thousands of notices.
Creating individual labels, entering addresses, recording tracking numbers, retrieving delivery records, and organizing mailing documentation can require significant staff time when each mailpiece is handled manually.
Certified Mail Labels provides online tools for organizations that need to manage USPS Certified Mail and other important mailings more efficiently.
Depending on the mailing workflow, organizations can use Certified Mail Labels for services and features including:
- USPS Certified Mail labels
- Electronic Return Receipt
- USPS tracking
- USPS SCAN Forms for qualifying mailings
- Batch Certified Mail processing
- Mailing and delivery records
- Secure long-term record retention
- Online access to mailing documentation
For organizations with higher mailing volumes, automation can further reduce repetitive data entry and manual processing.
API and SFTP Automation for Higher-Volume Mailings
Organizations that regularly generate compliance mail may benefit from incorporating Certified Mail into their existing business systems.
Certified Mail Labels supports API integration and SFTP automation for qualifying workflows.
API integration can help businesses connect Certified Mail functions with internal software and automated processes, while SFTP workflows can support secure transfer of batch mailing data.
These options can be especially useful for organizations such as courts, government agencies, law firms, financial institutions, healthcare organizations, property management companies, and other businesses that routinely process high volumes of important correspondence.
Instead of treating every Certified Mail piece as a separate manual task, automation can help organizations build mailing into an established operational workflow.
Why Mailing Records Matter When Requirements Change
AB 2789 demonstrates why compliance mailing involves more than purchasing postage.
Organizations need to know:
- What type of notice is being sent?
- Which statute, regulation, rule, or order applies?
- Which delivery methods are permitted?
- What level of proof is required?
- When does a new requirement become effective?
Those questions become especially important during transition periods.
A California court preparing a covered mediation notice on December 15, 2026, for example, should not just assume that the January 2027 rule already applies because AB 2789 has been signed.
Likewise, an organization sending an entirely different type of California legal notice should not assume that AB 2789 changes its mailing requirements. Accurate compliance mailing begins with identifying the rule that applies to the specific communication.
Certified Mail Labels Helps Organizations Manage Important Mail
When USPS Certified Mail is required, or when an organization determines that Certified Mail provides the appropriate level of documentation, Certified Mail Labels makes the mailing process easier to manage online.
Customers can create Certified Mail labels without completing traditional handwritten forms at the Post Office. Organizations can also manage tracking information and mailing records electronically.
For higher-volume senders, batch processing, API integration, and SFTP automation can help incorporate Certified Mail into existing operations.
Certified Mail Labels also maintains mailing and delivery records for 10 years, helping organizations keep important documentation accessible long after the original mailing.
The goal is not to use Certified Mail for every communication. It is to use the right mailing service and the right level of documentation for the requirement at hand. Changes such as California AB 2789 make that distinction increasingly important.
Frequently Asked Questions About California AB 2789 and Certified Mail
Does California AB 2789 eliminate Certified Mail requirements?
No. AB 2789 amends California Family Code §3176 and changes how certain child custody and visitation mediation notices may be provided beginning January 1, 2027. It does not eliminate Certified Mail requirements throughout California.
When does California AB 2789 take effect?
The changes to Family Code §3176 take effect January 1, 2027.
Is Certified Mail still required under Family Code §3176 in 2026?
The existing version of §3176 requires the covered mediation notice to be sent by Certified Mail, Return Receipt Requested, postage prepaid, to the last known address. The amended notice methods take effect January 1, 2027.
What notices does AB 2789 affect?
AB 2789 addresses written notice of mediation under Family Code §3176 in certain contested child custody and visitation matters. The statute also identifies recipients who must receive the applicable notice.
Can California courts send these mediation notices electronically in 2027?
Yes, in qualifying circumstances. The amended statute permits electronic service on represented parties and, with consent, self-represented parties, subject to California's applicable electronic-service requirements.
Can these notices still be mailed after January 1, 2027?
Yes. The amended statute specifically includes mail, express mail, and overnight delivery among the permitted methods. It also allows facsimile transmission and qualifying electronic service, along with specified forms of written notice provided through the court.
Does AB 2789 mean Certified Mail cannot be used after January 1, 2027?
AB 2789 removes Certified Mail, Return Receipt Requested as the exclusive mailing requirement under §3176 and instead authorizes notice by mail and several other methods. Organizations should review the amended law and applicable court procedures when determining the appropriate delivery method for a particular notice.
Does AB 2789 change other California laws that require Certified Mail?
No. AB 2789 specifically amends Family Code §3176. Other California statutes, regulations, court rules, orders, or contractual requirements may have their own mailing and delivery requirements.
Prepare for Changing California Mailing Requirements
California AB 2789 is a useful example of how legal mailing requirements can evolve. For the remainder of 2026, the existing Certified Mail, Return Receipt Requested requirement remains important for mediation notices governed by the current version of Family Code §3176.
Beginning January 1, 2027, California courts will have additional options for providing those notices. But the broader lesson extends beyond this one law.
The question should not just be, "Does California require Certified Mail?"
The better questions are:
What notice is being sent? What law governs it? What delivery method does that law permit or require? What proof is needed? And which version of the law is currently in effect?
When USPS Certified Mail is the appropriate method, Certified Mail Labels helps courts, law firms, government agencies, businesses, and other organizations prepare and manage important mail online.
From individual Certified Mail labels and Electronic Return Receipts to batch processing, USPS SCAN Forms, API integration, SFTP automation, tracking, and 10-year record retention, Certified Mail Labels provides options for organizations with both individual and high-volume mailing needs.
See How Certified Mail Labels Can Work for Your Organization
Want to learn how Certified Mail Labels can fit into your organization's mailing workflow?
Schedule a complimentary, custom Live Demo with a member of our Customer Support Team today.
We'll learn about your current mailing needs, walk you through the Certified Mail Labels platform, and show you the services and automation options that may help your organization save time and maintain stronger mailing records.
This article is provided for educational and informational purposes only and is not legal advice. Organizations should review the applicable statute, court rule, order, or other governing requirement when determining the appropriate method for a specific notice.