Virtual Mailbox & Form 1583 Rules in Delaware
A commercial mail receiving agency (CMRA) or private mailbox (PMB) in Delaware cannot serve as your LLC's registered agent—this is a uniform requirement across the state. However, a virtual mailbox address may generally be used as a business address; confirm current rules on the official Delaware Division of Corporations website. When opening a virtual mailbox account, USPS Form 1583 typically requires notarization or, alternatively, witnessing by the CMRA owner. Delaware permits remote online notarization (RON) under its Permanent RON framework based on the Revised Uniform Law on Notarial Acts (2022), and all Delaware-commissioned notaries may perform RON.
Residents can complete the entire Form 1583 process online by engaging an in-state RON notary, avoiding in-person visits. Because notarization rules and CMRA regulations change, confirm current requirements directly on Delaware's official state pages before proceeding. This information is regulatory in nature and does not constitute legal advice; consult an attorney for guidance specific to your situation.
How a virtual mailbox works
A virtual mailbox is a real street address at a commercial mail-receiving agency (CMRA) that scans your mail; opening one means filing USPS PS Form 1583, witnessed by a notary or the provider, with two IDs.
| Detail | As the rule stands |
|---|---|
| Can a virtual mailbox be your registered agent? | No (a PMB cannot be your registered agent) |
| Can it be your LLC business address? | Generally yes — verify |
| Online notarization (RON) for Form 1583 | Online notarization (RON) available |
| Form 1583 witnessing | Notary or CMRA-owner witness (in person or by A/V) |
| PMB designator (address line) | 'PMB <number>' or '# <number>' (USPS DMM 508.1.4) |
| Governing citation | 29 Del. C. ch. 43 (RULONA, 2022); USPS DMM 508.1.8 |
Opening any virtual mailbox means filing USPS PS Form 1583. The form must be witnessed — by a notary or by the mailbox provider (the CMRA owner/manager), in person or by real-time audio-video under the 2024 CMRA Clarification rule — and you supply two acceptable IDs. It is usually notarized, and the notarization can be done online via remote online notarization (RON) wherever the state allows it.
Confirm before you file. This is informational only, not legal advice. The official state Secretary of State / notary page and USPS are the authoritative sources.
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Compiled from the USPS federal baseline (DMM 508 / 39 CFR) and the state notary/RON statute, and verified June 2026. Always confirm the current rule on the official state Secretary of State / notary page before you rely on it — RON law is still moving. How we compile this. Informational only, not legal advice.