The CAN-SPAM Act mandates that all commercial emails include a valid physical postal address for the sender. A key question arises for smaller businesses and individuals using email service providers (ESPs): can they use the ESP's physical address instead of their own? While the law states "your" physical address, enforcement often prioritizes severe violations like deceptive headers or missing unsubscribe mechanisms over the exact ownership of the postal address. Many consider using an ESP's address a technical violation, yet its practical consequences are typically minimal, especially for smaller entities.
Key findings
Legal requirement: The CAN-SPAM Act clearly requires all commercial emails to include a valid physical postal address for the sender. This also applies to transactional emails.
Ambiguity of "your": The precise interpretation of "your" physical address in CAN-SPAM is vague. It can mean a street address, a PO Box, or a private mailbox registered with a commercial mail receiving agency.
Enforcement focus: Enforcement actions by the FTC or State Attorneys General are generally reserved for significant violations, such as false headers, deceptive practices, or complete absence of an unsubscribe mechanism, rather than minor technicalities about address ownership. Individuals cannot sue under CAN-SPAM for this type of violation.
Common practice for small senders: ESPs often include default address data for their smaller clients to ensure compliance, especially for those operating from home and seeking to protect their privacy.
Key considerations
Technical vs. practical compliance: While using an ESP's address might be a technical violation of the "your" clause, it rarely leads to prosecution due to low enforceability and the nature of the penalties, which are not designed for small-scale infringements.
Risk assessment for ESPs: ESPs offering their address as a blanket solution may face aggregate reputation risks, even if direct legal action is unlikely. This practice could be seen as an indicator of less stringent compliance oversight.
Business responsibility: Businesses should be fully informed about their obligations under CAN-SPAM, regardless of the ESP's advice, as the ultimate risk of non-compliance falls on the sender. This includes understanding if individual sales emails require CAN-SPAM compliance.
Alternative solutions: For privacy-conscious senders, using a PO Box or a registered private mailbox service is a compliant and recommended alternative to using a personal home address or an ESP's address, as detailed by the FTC CAN-SPAM compliance guide.
What email marketers say
Email marketers frequently discuss the practicalities and ambiguities of CAN-SPAM's physical address requirement. Many acknowledge the legal mandate but question its strict enforcement, particularly for small businesses or direct-to-consumer (DTC) brands that may not have traditional physical headquarters. The consensus often leans towards the importance of transparency and general compliance, even if some aspects of the law are perceived as outdated or challenging to implement literally.
Key opinions
Legal ambiguity: Marketers frequently question the exact interpretation of the "your" requirement in CAN-SPAM, especially regarding whether an ESP's address suffices.
Lack of enforcement: There's a common belief that authorities don't actively pursue small businesses for minor address violations, focusing instead on more significant spamming activities.
Outdated regulation: Many feel CAN-SPAM is an old law that hasn't adapted to modern online business models, where many companies lack a physical office space.
ESP responsibility: Marketers debate whether it is responsible for an ESP to advise clients to use the ESP's address, citing potential risks despite low enforcement.
Key considerations
Informing businesses: Even with perceived low enforcement, it's crucial for businesses to be aware of CAN-SPAM requirements, including that commercial emails must include a postal address.
Privacy vs. compliance: Small businesses, especially those operating from home, often seek ways to comply with the address rule without revealing personal information.
Future of CAN-SPAM: There's a desire among marketers for the law to be revisited and modernized to better suit the current digital marketing landscape.
Marketer from Email Geeks explains that the CAN-SPAM Act requires marketing emails to include a valid physical address and a link for managing email subscription preferences.
22 Mar 2025 - Email Geeks
Marketer view
Marketer from Email Geeks states that it is very common for ESPs, especially those working with smaller senders, to put address data in by default for compliance purposes.
22 Mar 2025 - Email Geeks
What the experts say
Email deliverability experts generally agree that the spirit of CAN-SPAM's physical address requirement is to provide recipients with a legitimate contact point. While the "your" aspect introduces ambiguity, experts often emphasize that compliance, even if not strictly enforced in every minute detail, is crucial for maintaining sender reputation and avoiding potential blocklists or legal scrutiny. They highlight practical alternatives for small businesses and discuss the broader context of anti-spam laws.
Key opinions
Compliance is key: Despite perceived lax enforcement, experts underscore the importance of fulfilling the CAN-SPAM physical address requirement to maintain sender legitimacy.
Purpose of the address: The core purpose of the address is transparency and a reliable contact for recipients, which an ESP's address might fulfill technically but lacks sender specificity.
Reputation implications: ESPs allowing widespread use of their address could negatively impact their aggregate sender reputation if clients engage in problematic email practices.
Focus on egregious violations: Legal enforcement bodies like the FTC typically target more severe violations such as deceptive practices and the absence of unsubscribe options, rather than minor address nuances.
Key considerations
Sender authenticity: While an ESP's address may satisfy the letter of the law, using the actual business's address is considered better practice for establishing genuine sender identity and trust.
Avoiding blocklists: Although not directly a blocklist trigger, non-compliance with fundamental requirements like a valid address can contribute to overall poor sender reputation and potentially lead to being listed on a blocklist.
Evolving regulations: Experts note that CAN-SPAM is an older law, and while it has not been modernized for email, other communication laws, like those governing SMS, are far more stringent and allow for individual lawsuits.
Global perspective: It is important to remember that commercial emails in the USA and Canada have specific address requirements, and these can vary by region, necessitating careful compliance.
Expert view
Expert from FTC.gov emphasizes that commercial email messages must always include a valid physical postal address to ensure transparency and accountability for the sender.
01 Jan 2024 - FTC.gov
Expert view
Expert from Securiti.ai explains that part of CAN-SPAM compliance dictates that the sender's identity and their postal address must be accurate and verifiable within the email content.
15 Mar 2024 - Securiti.ai
What the documentation says
Official documentation for the CAN-SPAM Act consistently outlines the requirement for a valid physical postal address in commercial emails. While it specifies that this can be a street address, a registered PO Box, or a private mailbox, the wording focuses on "your" address. This implies a direct connection to the sender or their designated mail receiver. The intent behind this rule is to provide transparency and a tangible point of contact for recipients who wish to communicate with the sender outside of email, particularly for opting out.
Key findings
Mandatory inclusion: All commercial electronic mail messages must contain the sender's valid physical postal address, as a core compliance element.
Address types: The accepted forms of address include a current street address, a post office box registered with the U.S. Postal Service, or a private mailbox registered with a commercial mail receiving agency.
Purpose: This requirement aims to establish transparency and trust, providing recipients with a reliable method to identify and contact the sender, especially concerning opt-out requests.
Sender identification: The rule is part of broader requirements to ensure the sender's identity is accurate and not misleading, which includes headers and subject lines.
Key considerations
Direct connection: The emphasis on "your" address suggests a direct link to the business or individual sending the email, rather than a third-party service, however loosely interpreted that may be.
Avoid deceptive information: Beyond the physical address, the act also prohibits false or misleading header information and deceptive subject lines, underscoring the importance of overall email integrity.
Consequences of non-compliance: Non-compliance with CAN-SPAM's various requirements, including the physical address, can lead to significant penalties, though specific enforcement patterns vary. Ensure your ESP helps maintain email authentication, as detailed in ESP capabilities essential for deliverability.
Adaptability for online businesses: While the act was written before widespread internet business, the options for PO Boxes and private mailboxes provide legal avenues for businesses without a traditional physical office to comply, as highlighted in how to include a physical address in emails.
Technical article
Documentation from FTC.gov states that commercial messages must include a valid physical postal address, which can be the sender's current street address, a registered PO Box, or a private mailbox registered with a commercial mail receiving agency.
01 Jan 2024 - FTC.gov
Technical article
Documentation from Securiti.ai clarifies that for compliance, the email message and its subject header must not be deceptive, the sender's identity must be accurate, and a postal address must be included.