Review period:<\/strong> April 1 through June 30, 2026 Prosper Marketplace is a San Francisco financial-technology company offering personal loans, consumer credit-card products, and an investment marketplace tied to consumer loans. Prosper states that it has helped approximately two million people pursue their financial goals. Personal loans offered through the platform are originated by WebBank, while the Prosper Card is issued by Coastal Community Bank.<\/p>\n\n\n\n Prosper is primarily a digital financial-services organization, but it maintains several confirmed physical mailstreams:<\/p>\n\n\n\n Prosper instructs personal-loan customers using standard mail to send payments to a USPS P.O. box in Los Angeles. Expedited payments are sent to a separate lockbox in El Monte. Prosper Card customers using regular mail send payments and correspondence to a Dallas P.O. box, while overnight items use a separate Carrollton lockbox.<\/p>\n\n\n\n The principal Q2 2026 business indicators available publicly were monthly marketplace-performance updates:<\/p>\n\n\n\n Prosper had not published a June 2026 performance update by June 30. Therefore, a full Q2 marketplace comparison cannot yet be completed from public data.<\/p>\n\n\n\n Preliminary USPS assessment:<\/strong> Prosper is more likely to represent a First-Class Mail, payment-mail, regulatory-mail, Certified Mail, and returned-mail opportunity than a large outbound parcel account. The highest priorities are protecting inbound loan and card payment mail, identifying all print and lockbox vendors, measuring legally required customer correspondence, and confirming whether the 2025 data incident continued to generate notification or identity-protection mail during Q2.<\/p>\n\n\n\n Average revenue per piece should be calculated as:<\/p>\n\n\n\n USPS revenue \u00f7 total USPS mail and package volume<\/strong><\/p>\n\n\n\n Separate reporting should be developed for:<\/p>\n\n\n\n Interpretation:<\/strong> Marketplace indicators were generally stable between April and May. The average loan size increased only slightly, the borrower rate increased marginally, and the median payment-to-income ratio improved slightly. These financial measures do not directly indicate USPS volume.<\/p>\n\n\n\n The following are required to complete the USPS comparison:<\/p>\n\n\n\n Prosper\u2019s April and May performance updates show relatively stable originated-loan sizes and credit metrics.<\/p>\n\n\n\n Potential USPS significance:<\/strong> A stable or expanding loan portfolio may support continued physical servicing, payment, collections, tax, and regulatory mail. However, Prosper\u2019s digital-first servicing model means mailed volume may not grow proportionally with loan originations.<\/p>\n\n\n\n Prosper allows personal-loan borrowers to mail checks, money orders, or cashier\u2019s checks to a Los Angeles P.O. box. Standard mail is described as normally taking seven to ten days. Expedited payments are sent to an El Monte lockbox.<\/p>\n\n\n\n Potential USPS significance:<\/strong><\/p>\n\n\n\n Prosper Card customers may mail payments and correspondence to a Dallas P.O. box. Overnight payments are directed to a Carrollton lockbox.<\/p>\n\n\n\n Potential USPS significance:<\/strong> The card and personal-loan payment streams are separate and may be managed by different banks, vendors, lockboxes, and postage accounts.<\/p>\n\n\n\n Prosper\u2019s terms direct certain legal notices to 221 Main Street, Suite 300, San Francisco.<\/p>\n\n\n\n Potential USPS significance:<\/strong> Corporate and legal correspondence may require reliable delivery, proof of mailing, signature options, and careful forwarding if office arrangements change.<\/p>\n\n\n\n Prosper disclosed in December 2025 that it had discovered unauthorized system activity on September 1, 2025 and had mailed notification letters.<\/p>\n\n\n\n Potential USPS significance:<\/strong> Although the incident predates Q2, follow-up communications may have continued through:<\/p>\n\n\n\n No Q2 2026 follow-up mailing volume was publicly disclosed.<\/p>\n\n\n\n Prosper reported an average originated loan size of $16,238, a weighted average borrower rate of 15.8%, and a median payment-to-income ratio of 5.2%.<\/p>\n\n\n\n USPS analysis:<\/strong> The update confirms active loan-marketplace operations but does not disclose customer-mail or payment-mail volume.<\/p>\n\n\n\n Prosper reported an average originated loan size of $16,274, a weighted average borrower rate of 15.9%, and a median payment-to-income ratio of 5.1%.<\/p>\n\n\n\n USPS analysis:<\/strong> Stable marketplace activity supports continued servicing and payment-mail needs. It does not establish growth in USPS revenue.<\/p>\n\n\n\n Prosper continued issuing monthly performance updates intended to provide investors with loan-portfolio information.<\/p>\n\n\n\n Potential USPS significance:<\/strong> Most investor reporting is likely digital, but annual tax forms, regulatory notices, and investor-requested paper communications may still generate physical mail.<\/p>\n\n\n\n No reliable Q2 source identified:<\/p>\n\n\n\n USPS analysis:<\/strong> Q2 account changes must be explained primarily through internal postal data and customer discovery.<\/p>\n\n\n\n Potential First-Class Mail streams include:<\/p>\n\n\n\n Actual mail ownership and volumes remain unverified.<\/p>\n\n\n\n Confirmed payment addresses include:<\/p>\n\n\n\n Personal loans, standard mail<\/strong> Prosper Card, regular mail<\/strong> Potential USPS opportunities include:<\/p>\n\n\n\n Potential uses include:<\/p>\n\n\n\n USPS should determine whether Prosper currently uses Certified Mail, electronic return receipts, Priority Mail signature services, or private legal couriers.<\/p>\n\n\n\n Prosper handles sensitive financial information, making correct addresses essential.<\/p>\n\n\n\n Potential USPS tools include:<\/p>\n\n\n\n Potential uses include:<\/p>\n\n\n\n Potential Ground Advantage shipments include:<\/p>\n\n\n\n Prosper\u2019s main USPS opportunity is likely mail rather than parcels.<\/p>\n\n\n\n Search USPS and Salesforce systems for:<\/p>\n\n\n\n Quantify the Los Angeles P.O. box stream and review:<\/p>\n\n\n\n Perform a separate review of the Dallas P.O. box because the card program may use different vendors and operational contacts.<\/p>\n\n\n\n Determine who produces:<\/p>\n\n\n\n Financial mail has significant compliance and customer-service consequences when undeliverable. USPS should evaluate the company\u2019s Move Update, address validation, and returned-mail processes.<\/p>\n\n\n\n Compare USPS accountable services with private couriers for legal and compliance correspondence.<\/p>\n\n\n\n Determine whether any supplemental or corrected notification mailings occurred during Q2 2026.<\/p>\n\n\n\n Significant USPS revenue may appear under banks, mail vendors, lockbox providers, or servicers rather than Prosper\u2019s San Francisco corporate account.<\/p>\n\n\n\n Schedule a QAR involving:<\/p>\n\n\n\n The first discussion should focus on account naming, payment-mail volumes, vendor ownership, returned mail, address quality, and cybersecurity-notification follow-up.<\/p>\n\n\n\n Q2 2026 QAR:<\/strong> The customer name appears to be Prosper Marketplace, Inc., not Prosper Loans Marketplace, Inc. Prosper operates a digital personal-loan marketplace, Prosper Card program, and consumer-credit investment platform. Personal loans are originated by WebBank, and Prosper Card is issued by Coastal Community Bank.<\/p>\n\n\n\n Prosper maintains confirmed physical payment-mail streams. Personal-loan customers mail standard payments to a Los Angeles USPS P.O. box, while Prosper Card customers mail payments and correspondence to a Dallas USPS P.O. box. Expedited payments use separate private-carrier lockboxes.<\/p>\n\n\n\n Public Q2 performance updates showed stable marketplace conditions. Average originated loan size was $16,238 in April and $16,274 in May. Weighted average borrower rates were 15.8% and 15.9%, respectively.<\/p>\n\n\n\n Potential USPS opportunities include First-Class Mail, payment mail, Courtesy Reply or Business Reply Mail, Certified Mail, address-quality services, returned-mail management, regulatory communications, investor and tax documents, and cybersecurity-notification follow-up.<\/p>\n\n\n\n Risks:<\/strong> USPS account performance was unavailable. Prosper is digital-first, and significant postage may be owned by banks, servicers, lockbox processors, or print vendors. Mailed payment delays can create direct customer consequences, and the 2025 data incident remains an account-risk consideration.<\/p>\n\n\n\n Next steps:<\/strong> Confirm the legal account name, retrieve quarterly USPS data, quantify personal-loan and card payment mail, identify all mail and lockbox vendors, review address quality and returned mail, and schedule a cross-functional QAR.<\/p>\n\n\n\n Follow-up date:<\/strong> Not provided.<\/p>\n\n\n\n Prosper Marketplace, Inc. Q2 2026 Quarterly Account Review Review period: April 1 through June 30, 2026Customer name provided: Prosper Loans Marketplace, Inc.Probable correct legal name: Prosper Marketplace, Inc.Related entity: Prosper Funding LLCHeadquarters: 221 Main Street, Suite 300, San Francisco, California 94105Review status: Preliminary, pending USPS account data, entity confirmation, mail-vendor details, and payment-mail volume 1. Executive Account Summary Prosper Marketplace is […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1407","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/posts\/1407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/comments?post=1407"}],"version-history":[{"count":1,"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/posts\/1407\/revisions"}],"predecessor-version":[{"id":1408,"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/posts\/1407\/revisions\/1408"}],"wp:attachment":[{"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/media?parent=1407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/categories?post=1407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/brianbaker.net\/blog\/wp-json\/wp\/v2\/tags?post=1407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Customer name provided:<\/strong> Prosper Loans Marketplace, Inc.
Probable correct legal name:<\/strong> Prosper Marketplace, Inc.
Related entity:<\/strong> Prosper Funding LLC
Headquarters:<\/strong> 221 Main Street, Suite 300, San Francisco, California 94105
Review status:<\/strong> Preliminary, pending USPS account data, entity confirmation, mail-vendor details, and payment-mail volume<\/p>\n\n\n\n1. Executive Account Summary<\/h2>\n\n\n\n
\n
\n
\n\n\n\n2. Quarterly Performance Comparison<\/h2>\n\n\n\n
USPS account performance<\/h3>\n\n\n\n
Metric<\/th> Q2 2026<\/th> Q1 2026<\/th> Q2 2025<\/th> Change<\/th><\/tr><\/thead> USPS revenue<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr> Total USPS mail volume<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr> Package volume<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr> Average revenue per piece<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr> First-Class Mail volume<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr> Payment-mail volume<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr> Certified Mail volume<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr> Returned-mail volume<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr> Priority Mail volume<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr> USPS product mix<\/td> Unavailable<\/td> Unavailable<\/td> Unavailable<\/td> Not calculable<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \n
Public marketplace-performance indicators<\/h3>\n\n\n\n
Measure<\/th> April 2026<\/th> May 2026<\/th> April-to-May change<\/th><\/tr><\/thead> Average originated loan size<\/td> $16,238<\/td> $16,274<\/td> +0.2%<\/td><\/tr> Weighted average borrower rate<\/td> 15.8%<\/td> 15.9%<\/td> +0.1 percentage point<\/td><\/tr> Median payment-to-income ratio<\/td> 5.2%<\/td> 5.1%<\/td> -0.1 percentage point<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Missing comparison data<\/h3>\n\n\n\n
\n
\n\n\n\n3. Important Changes and Trends<\/h2>\n\n\n\n
Stable personal-loan marketplace activity<\/h3>\n\n\n\n
Physical personal-loan payment mail remains active<\/h3>\n\n\n\n
\n
Prosper Card payment mail remains active<\/h3>\n\n\n\n
Legal and compliance correspondence uses the San Francisco address<\/h3>\n\n\n\n
Data-breach follow-up remains relevant context<\/h3>\n\n\n\n
\n
\n\n\n\n4. Relevant Company Developments<\/h2>\n\n\n\n
April 2026: Marketplace performance update published<\/h3>\n\n\n\n
May 2026: Marketplace performance remained stable<\/h3>\n\n\n\n
Q2 2026: Investor reporting continued<\/h3>\n\n\n\n
No major Q2 corporate or logistics announcement verified<\/h3>\n\n\n\n
\n
\n\n\n\n5. Potential USPS Impact<\/h2>\n\n\n\n
First-Class Mail<\/h3>\n\n\n\n
\n
Inbound payment mail<\/h3>\n\n\n\n
Prosper Marketplace, Inc.
P.O. Box 886081
Los Angeles, CA 90088-6081<\/p>\n\n\n\n
Prosper Card Services
P.O. Box 650078
Dallas, TX 75265-0078<\/p>\n\n\n\n\n
Certified Mail and accountable services<\/h3>\n\n\n\n
\n
Returned-mail management<\/h3>\n\n\n\n
\n
Priority Mail<\/h3>\n\n\n\n
\n
Ground Advantage<\/h3>\n\n\n\n
\n
\n\n\n\n6. Opportunities<\/h2>\n\n\n\n
1. Map the complete entity structure<\/h3>\n\n\n\n
\n
2. Protect personal-loan payment mail<\/h3>\n\n\n\n
\n
3. Protect Prosper Card payment mail<\/h3>\n\n\n\n
4. Identify print-and-mail vendors<\/h3>\n\n\n\n
\n
5. Review address quality<\/h3>\n\n\n\n
6. Review Certified Mail usage<\/h3>\n\n\n\n
7. Audit data-breach notification follow-up<\/h3>\n\n\n\n
8. Consolidate postage visibility<\/h3>\n\n\n\n
\n\n\n\n7. Risks and Concerns<\/h2>\n\n\n\n
\n
\n\n\n\n8. Customer Questions<\/h2>\n\n\n\n
\n
\n\n\n\n9. Recommended Actions<\/h2>\n\n\n\n
USPS actions<\/h3>\n\n\n\n
\n
Recommended customer follow-up<\/h3>\n\n\n\n
\n
\n\n\n\n10. Salesforce-Ready Account Update<\/h2>\n\n\n\n
\n\n\n\n11. Information Required to Finalize the QAR<\/h2>\n\n\n\n
\n
12. Sources<\/h2>\n\n\n\n
\n