Last reviewed August 25, 2026. MaxPob builds guides from structured evidence rather than treating search snippets, seller copy, or isolated comments as facts. The evidence inventory includes 42 online sources, 18 verified factual claims, and aggregate themes from 12,101 public product reviews. The frozen August 11 research-database snapshot contains 8,886 keyword records; the active keyword map now contains 8,970 unique queries, including 4,006 question-form searches.
Who prepares the guides
MaxPob’s editorial team prepares and reviews the site’s mailing and stamp guides. The site is independent and is not affiliated with, endorsed by, or acting for the United States Postal Service. USPS rules and prices remain controlling.
How the research database works
- Rules and prices: USPS Postal Explorer, Notice 123, Postal Bulletin, USPS FAQs, and official release announcements.
- Fraud and safety: U.S. Postal Inspection Service and USPS Office of Inspector General material.
- History: USPS history pages and the Smithsonian National Postal Museum.
- Expert context: established philatelic organizations where an official source does not answer the specialist question.
- Experience signals: anonymized aggregate review themes and paraphrased community discussions. These identify questions and failure modes; they do not establish postal rules.
Each source record stores its publisher, type, subject tags, access date, authority level, and a paraphrased research summary. Rate-sensitive claims are stored separately with an effective or verification date. Content briefs then map a target question to the relevant sources and an existing or planned URL.
Keyword and question research
The active keyword map contains 8,970 unique queries after merging and normalizing the supplied keyword and question files; 4,006 rows are question-form searches. A query may be assigned to an existing page, a planned page, or marked unassigned or not targeted. Third-party volume estimates are directional and are not Search Console traffic; they do not guarantee impressions, clicks, or ranking. Keywords define questions and vocabulary, but they do not justify repetition or a new page without a distinct user need.
What the 12,101-review analysis can and cannot show
The corpus contains 10,971 reviews associated with Amazon product datasets and 1,130 Walmart reviews. We retain aggregate counts and theme classifications, not reviewer names or full comment text. The most frequent themes were design or occasion (2,663 mentions), mailing use (2,617), delivery or fulfillment (2,279), price or value (1,883), convenience or access (1,176), and format or quantity (1,059). A review can belong to more than one theme.
This is not a representative consumer survey. Reviews are self-selected, platform-moderated, and may concern old purchases, duplicate product records, marketplace sellers, or fulfillment rather than the stamp itself. Theme counts reveal recurring questions, not market share, defect rates, authenticity, or postal performance.
Editorial safeguards and corrections
- Official USPS rules override community anecdotes and retailer descriptions.
- Current-rate articles show a reviewed date and link to USPS Notice 123.
- Community comments are paraphrased and linked; they are never presented as representative statistics.
- We do not claim first-hand tests that did not occur.
- Material errors should be reported through the site’s contact page so the cited claim can be rechecked and corrected.
Why this content exists
The purpose is to help a reader choose the right postage, avoid counterfeit offers, and understand stamp formats without having to reconcile conflicting search results. The database and drafting tools support that work, but publication is organized around reader decisions rather than search-engine manipulation.
Editor and accountability
MaxPob Editor is responsible for researching, writing, updating, and correcting MaxPob guides. The profile explains the editor’s coverage areas, demonstrated research experience, independence, and limits. All published articles are available in the author archive.