When one person in Mexico is arranging a U.S. virtual mailbox for someone else, a parent, a partner or a relative, the first question to settle is not the form itself, it is who counts as the applicant. Form 1583 is tied to the person whose name will receive mail at that address, and that person is the one who signs and appears on the notary session, even if someone else is doing all the coordinating.
Why this question comes up so often
A son in Mexico City managing paperwork for a parent who still receives U.S. bank mail, a partner handling the business side of a mailbox while the other partner's name is on the account, or someone helping a relative who is less comfortable online: all of these involve two people, but the mailbox provider only cares about the one whose identity matches the address on file. Confusing the two roles is the most common reason a submitted form comes back unprocessed.
Who is listed, who signs, who must appear
- The applicant. Whoever's name is on the mailbox account. Their identification, their signature, their notary session.
- The person helping. Can gather documents, schedule the call and sit alongside the applicant during the session, but does not sign in the applicant's place.
- Appearing on camera. The applicant has to be the one the notary sees and verifies, since the notarization confirms that specific person's identity, not the family member coordinating the process.
The guide on Form 1583 ID requirements and proof of address covers what the applicant personally needs to bring to that session.
When the mailbox is meant for more than one person
If a parent and an adult child both want mail forwarded to the same address, most providers treat that as two separate personal forms rather than one shared form, each with its own identification and its own signature. A partner handling the account's day to day administration does not remove the need for the other partner, as the named applicant, to complete their own section if their name appears on the mailbox.
Booking the session from Mexico
Mexico sits close enough to U.S. time zones that scheduling rarely becomes the obstacle it is for other countries, though applicants should still confirm a slot that works for whichever time zone they are in, central, Pacific or otherwise. The session needs a stable connection, a working camera, and the applicant's original government ID, not a photocopy or a photo of it. The notary verifies the applicant's identity directly, watches them sign electronically, then applies the notarial certificate and seal.
Mistakes that come from mixing up the two roles
- The person coordinating the mailbox signs the form instead of the actual applicant.
- A parent's mail gets routed to an account registered under the helping relative's name instead of the parent's own.
- Only one household member completes a form when the provider expects a separate one for each named recipient.
- The applicant joins the call but the ID presented belongs to the person who scheduled it.
Settling who the applicant actually is before booking the session avoids a rejected form and a second round of scheduling.
What happens once the right applicant's form clears review
Once the provider accepts the notarized form under the correct applicant's name, mail starts arriving at the address tied specifically to that person, bank letters, government notices, and anything else addressed to them. The relative who coordinated the process can still help check the mailbox dashboard and flag anything that needs attention, but the mail itself is logged under the applicant's own account. This separation matters later too: if the applicant ever closes the mailbox or switches providers, the new provider will again ask for that same person's own identification, not the coordinator's.
How TR Signing Group handles it
TR Signing Group runs these sessions from Bayonne, New Jersey: a pre-check that confirms exactly who the applicant is and what identification they will present, then a call held by Tanim Raquib, a commissioned New Jersey notary public, scheduled at a time that works from Mexico. A single applicant's form gets the same attention as a household managing several accounts. Start through the Form 1583 virtual mailbox service or the remote online notarization service, read the related guide on notarizing U.S. documents from Mexico, or go straight to request a quote.
Ready when you are
Services for this guide
USPS Form 1583 / Virtual Mailbox
Get your USPS Form 1583 notarized online and validated by your virtual mailbox provider the first time, from anywhere in the world. IDs checked before the session, form returned promptly.
Remote Online Notarization
Get documents notarized online by a New Jersey commissioned notary, from anywhere. Identity verification, recorded session, digital certificate. International signers welcome.
U.S. LLC Support for Foreign Founders
Foreign founders: we coordinate your U.S. or Wyoming LLC formation and execute the documents around it: operating agreement, membership certificate, Form 1583, ownership declarations, apostille.
Corporate Ownership Documents
Bank-account ownership documentation, notarized: sole shareholder declarations, ownership confirmations, membership certificates and shareholder documents for banks, payment providers and partners. Sole shareholder declarations, ownership confirmations, membership certificates and shareholder documents executed and notarized for banks, payment providers and partners in the U.S. and abroad.
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Questions we hear often
Who is the applicant on Form 1583 when I am helping a relative?
The applicant is whoever's name is on the mailbox account and will receive mail there. That person signs and appears on the notary session, not the relative coordinating the process.
Can I sign the form on behalf of my parent?
No. Each applicant signs their own form with their own identification. Someone can help schedule and gather documents, but the applicant has to appear and sign personally.
Does a parent and an adult child need separate forms for the same address?
Usually, yes. Most providers treat each named recipient as a separate applicant with their own personal section, even when mail goes to one shared address.
What ID does the actual applicant need to bring?
A valid government photo ID plus whatever second document the provider's own list accepts, presented by the applicant themselves during the session.
What happens if the wrong person signs the form by mistake?
The provider will typically reject it. A new session with the correct applicant signing and appearing on camera resolves it.
Notary and document-execution services only. TR Signing Group does not provide legal, tax or immigration advice and is not affiliated with USCIS or any government agency.