This page aggregates measured, corroborated evidence: donors' iPhones recorded apps contacting this domain, every claim below was reported by separate accepted donations and published under a human verdict (later rows for an approved app inherit its verdict). A contact is a measurement, not an accusation — it does not show what data was sent.
mail-attachment.googleusercontent.com
classified as first-party · 2
What our research panel found AI-drafted · human-reviewed
We ask several independent AI models the same question and publish their answers separately — cross-vendor agreement is evidence against fabrication, and disagreement is worth seeing. 3 of 3 models answered, overall confidence high. A human reviewed this domain's claims before anything here published.
Anthropic Claude — first-party
googleusercontent.com is a Google-operated domain, and the mail-attachment subdomain is the standard host Gmail uses to serve email attachment content, so this is first-party infrastructure for the same publisher as the app. The declared collection already covers Emails, Files and docs, and other user-generated content, so no data flow beyond the label is implied.
OpenAI — first-party
The googleusercontent.com domain is associated with Google-hosted content, and the mail-attachment subdomain is consistent with Gmail attachment delivery. The label declares Files and docs, Photos, Videos, and Emails, so this contact does not imply an undeclared data flow.
Google Gemini — first-party
mail-attachment.googleusercontent.com is a Google-owned domain used to serve email attachments directly within the Gmail app. This represents core first-party functionality rather than undisclosed third-party tracking.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
| Gmail | — | 3 | 57 | 2026-07-30 |
The corpus grows one report at a time: donate your App Privacy Report — anonymous by design.
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