What Martin does with your messages
Read from its published policy on 2026-09-06, and quoted rather than paraphrased. It answers the training question with a qualification worth reading twice. It does not say which company actually carries your messages, which puts it with the majority: only 9 of 41 do.
What the document says
| Trains on your conversations | Qualified statement |
|---|---|
| Data of people who never signed up | Not addressed |
| If you cancel | Some information may be retained to prevent fraud, troubleshoot, assist investigations or comply with legal requirements. No period stated. |
| Model providers named | OpenAI |
| Who carries the messages | Not disclosed |
| Where to report a hole | No route published |
| Jurisdiction | Not stated |
In its own words
“our app does not use any google user data for developing, improving, or training ai and/or ml models”
What it does not answer
The policy is silent on who carries the messages, where to report a hole and jurisdiction. Silence is not a denial, and it is not a promise either: a document that does not address the people in your group thread has not agreed to anything about them.
Back to the Martin listing, or see every policy in this directory read the same way, where 9 of 41 name who holds your messages and the rest do not.