Privacy Policy

His Letters · Lantern Post, LLC · Last updated October 2026

What His Letters is

His Letters sends you one letter a day from a fictional character. The letters are written for you by an AI model (Anthropic's Claude), and each one can respond to what you chose to write back. The character is fictional and AI-written, not a real person, and will say so if you ask. His Letters is for adults 18 and older. Companion chatbots may not be suitable for some minors.

What we keep, and why

• The name you give us, to address your letters.
• Your agreement. When you tapped “Agree and meet him”, and which version of the notice you agreed to.
• Your time zone (from your device settings) and the evening hour you choose, so each letter arrives in your evening, around that hour.
• Your replies, so the next letter can answer them. Writing back is always optional.
• The letters written for you and a short memory of your story (summaries of recent letters and where the story is), so the character stays consistent.
• When you read and when you reply, to schedule letters and to pause them if you stop reading.
• A safety note. If a reply matches the check described under Safety protocol (below), our server records when that happened, so that the next week of letters stays gentle. It records only that it happened and when.
• Reports. If you report a letter from inside the app, we keep the reason you chose and the one line you wrote, together with which letter it was, so that the next letters can avoid it. Only the reason category is passed to the AI, never your words. Reports are removed with “Delete my data”.
• A random key for your phone. There is no account, email, or password; a random key created when you start lets only your phone open your letters. We store only a one-way scrambled (hashed) form of it.
• Abuse prevention. To limit how many new readers can start from one network each day, we keep a one-way scrambled form of your IP address (combined with a secret that changes daily) and a count. We never store your IP address itself.
• Cost records. For each letter, how much it cost to write, linked to your random reader id. These contain none of your words.

A copy of your letters and replies is also kept on your phone, so you can read them offline. Your phone also keeps whether you turned reminders on or off, whether the notification question has already been asked, and when our server last said your next letter is due, so the app can set your reminder again if it was stopped. “Delete my data” removes these as well.

Who helps us provide it

Anthropic writes each letter. To do that, we send its AI model the character's instructions, the name you gave, your latest reply, and your story's memory. Anthropic's commercial terms state that it may not train its models on this content. Cloudflare hosts our letter server and its database.

We do not sell your information, share it for advertising, or use it to profile you. The app has no ads, no analytics, and no advertising or tracking SDKs.

How long we keep it

Your letters, replies, story memory and safety note are deleted automatically 90 days after your story ends, or 90 days after you last read or replied, whichever comes first. Cost records, which contain none of your words, are kept for accounting, and the monthly crisis-letter count (see Safety protocol) is kept for reporting. Neither is linked to your words. The sign-up counters described under Abuse prevention (a scrambled network value, a date and a count) are kept for up to 30 days.

Deleting your data

In the app, go to Settings → Delete my data. This deletes your letters, replies, story memory and safety note from our server immediately, and then from your phone. Two kinds of record are not part of this deletion, because they contain nothing you wrote: the cost records (token counts and amounts, under your random reader id) and the daily sign-up counters (a scrambled network value, a date and a count, kept for up to 30 days). If our server cannot confirm the deletion, the app tells you, so it never claims to have deleted something it did not.

Security

Everything between the app and our server travels over encrypted connections (HTTPS).

Safety protocol

How His Letters handles suicide, self-harm and crisis situations. California law requires us to publish this (Business and Professions Code section 22602).

• Always available. Tap “Need support right now?” in your inbox, on any letter, on the reply screen, or in Settings to see crisis resources. It works on your phone, even offline, and does not depend on anything you write. In English it lists U.S. services: the 988 Suicide & Crisis Lifeline (call or text 988) and the Crisis Text Line (text HOME to 741741). If you are outside the U.S., contact your local emergency services.
• When you write. Each reply is compared, on your phone and on our server, against a short list of specific phrases about suicide, self-harm, or abuse. If one matches, the app shows those crisis resources right away.
• Your next letter. After a match, your next letter is a fixed message prepared and reviewed in advance, not written by the AI, pointing you to the same crisis services.
• The letters after that. For at least seven days, and until you send a reply that does not match the check, the story does not move toward romantic milestones. Each letter is also checked so it never plays down what you wrote or assumes you are better.
• Every letter. Before any letter reaches you, it is checked for crisis language, sexually explicit content, references to minors, medical or legal advice, and pressure to drink alcohol. A letter that fails is written again; if it keeps failing, it is not sent.
• Counting. We keep a monthly count of how many of those crisis-resource letters we sent. The count is not linked to any reader. California requires a yearly report of this number (section 22603).

Limits. The check recognizes only particular phrases. Most ways of describing a hard or dangerous situation will not match it, so it is not a substitute for the always-available link above. No one monitors your replies, and His Letters cannot contact anyone for you. If you are in danger, contact emergency services.

Changes to this policy

If we change what we collect or how we use it, we will update this page before the change takes effect. This page's content was last substantively revised on October 1, 2026.

If you contact support

If you choose to email us, we will see your email address and whatever you write, only to answer you. We don't add it to any list, use it for advertising, or share it with anyone else.

Children

This app is not directed at children and is not listed in the Kids category. We do not knowingly collect information from children.

Questions

Write to support@hisletters.com.