- Who it helps
- Developers experimenting with read-only email assistants.
- Availability
- The public README describes local setup and read-only IMAP. Installation and the linked security document were not verified end to end.
What is covered
The README addresses hidden HTML/CSS content, Unicode obfuscation and prompt-injection patterns. It stores cleaned and quarantined records locally.
What still needs a separate control
Attachments, image OCR, link reputation and human-directed social engineering fall outside its stated protection. Treat a clean result as one input to a review process. Keep account actions separately authorized.
What you can do
- Start by reading the exclusions and build a harmless fixture containing visible text plus a hidden instruction before connecting any mailbox. Open reference ↗
Where the evidence stops
No mailbox was connected or attack corpus executed. The author’s test claims do not establish protection against unseen messages.
Sources read. Primary sources were read on October 17, 2026. The product or benchmark was not executed in this research session.
Sources & further reading
GitHub · implementation
InBox Wall email preprocessing ↗
README documents read-only email preprocessing and explicitly limited protection. Security file fetch failed.
Annora998 · page checked 2026-10-17
More sources reviewed (1)
Hacker News · discussion
Show HN launch feed ↗
Public headline sample used to discover unfamiliar projects; no popularity counts retained.
Hacker News · page checked 2026-10-17
Coverage note: Independent usage evidence and cross-platform discussion remain limited in this sample.
The record over time (1)
Dated source checks and published explanations. An observation date can differ from the original release date.
InBox Wall is a local email preprocessing project that cleans text before an AI assistant receives it.