Terms of service

Last updated: October 28, 2026

Welcome to unsend, provided by Unsend Inc ("we," "our," "us"). These Terms of Service ("Terms") cover the unsend apps for iPhone, iPad, Mac and Android, the web app at web.unsend.app, and the website at unsend.app (together, the "App"). Please read them carefully. By creating an account or using the App, you agree to be bound by these Terms. If you do not agree to them, please do not use the App.

1. Acceptance of Terms

By accessing or using unsend, you agree to comply with and be bound by these Terms. They apply to everyone who uses the App.

2. Description of Services

unsend is a messenger that brings chat, email, and voice and video calling together in one app. Every account comes with an email address, username@unsend.app, that can send email to and receive email from any email provider. unsend is invite-only: you need an invitation code to create an account.

unsend encrypts your messages, emails and calls in transit and at rest, but it is not end-to-end encrypted. Our Privacy Policy explains what that means, including when we may access content.

No emergency calls. unsend is not a telephone service and cannot be used to call emergency services (such as 911). Make sure you have another way to reach them.

3. User Accounts

• Registration: You agree to give accurate information and to keep it up to date. You may not create an account for someone else without their permission, use a username that impersonates another person or organization, or create accounts in bulk or by automated means. We may refuse or reclaim usernames that are reserved, misleading, or that infringe someone else's rights. If an account is deleted, its username is never reissued.

• Age Requirement: You must be at least 13 years old to use the App. If you are under the age at which you can agree to these Terms where you live, a parent or guardian must agree to them for you. By using the App, you confirm that you meet these requirements.

• Invitations: Invitation codes are personal. You may not sell them, publish them in bulk, or use them to create accounts for spam or abuse.

4. Signing In and Account Security

• Passkeys, not passwords: unsend accounts sign in with a passkey stored on your device or in your passkey provider (for example iCloud Keychain or Google Password Manager). The passkey is unlocked with Face ID, a fingerprint or your device passcode. If your device can't use passkeys, your account uses a verified phone number and a recovery PIN instead. Passwords are being retired: if your account still has one, you will be asked to set up a passkey, and the password is deleted once you do.

• Your responsibilities: Anyone who can unlock your device or your passkey provider may be able to sign in as you. You are responsible for:

  • keeping your devices, device passcodes and passkey provider account secure;
  • keeping your recovery PIN secret;
  • the activity on your account.

  Approve a sign-in request only if you started it yourself. unsend will never call or message you asking you to approve one. If you see a sign-in you don't recognize, use This wasn't me or sign the device out in Settings, and contact support@unsend.app.

• Recovery: You can get back into your account with a passkey, by approving the sign-in from another signed-in device, or with a text-message code sent to your verified phone number (plus your recovery PIN, if you set one). If you lose all your devices and passkeys and have no verified phone number, we may not be able to restore your account. Set up recovery options before you need them.

• App Lock: App Lock adds a lock on your device. It does not replace your device's own security. If you forget your App Lock passcode, you must sign out and sign in again.

5. User Conduct

You agree to use the App only for lawful purposes and in accordance with these Terms. You agree not to:

• Content: Post, upload, send or distribute any content that is unlawful, harmful, threatening, abusive, harassing, defamatory, vulgar, obscene, invasive of privacy, or otherwise objectionable. In particular, you must not share any content that sexually exploits or endangers children. We report such content to the authorities.

• Spam and email abuse: You must not:

  • send unsolicited bulk or commercial messages or email;
  • send phishing messages, malware or deceptive links;
  • forge or disguise the origin of a message;
  • harvest addresses or phone numbers;
  • use your unsend address in ways that break email anti-spam laws (such as the CAN-SPAM Act).

• Calls: You must not use calls or screen sharing to harass people or make unwanted repeated calls. You must not record a call, or share its content, without the consent of the other participants where the law requires it.

• Impersonation and evasion: You must not:

  • impersonate any person or organization, including unsend staff;
  • contact someone who has blocked you through another account;
  • try to get around a suspension.

• Intellectual Property: Infringe upon the intellectual property rights of others.

• Security: Attempt to gain unauthorized access to any portion of the App, to other people's accounts, or to related systems or networks. This includes tricking people into approving sign-in requests or revealing codes or PINs.

• Disruption: Interfere with the proper functioning of the App. This includes scraping it, accessing it by automated means except through features we provide for that purpose, or reverse engineering it except where the law allows.

You can block people and email addresses, and report messages and accounts to us. We may review reported content and act on it under these Terms.

6. Content Ownership and Rights

• Your Content: You retain ownership of the content you create and share through the App. You grant us a worldwide, non-exclusive, royalty-free license to host, store, copy, process, transmit and display your content, only as needed to operate, secure and improve the App and to provide it to you and the people you communicate with. This includes:

  • delivering your messages, emails and calls, and syncing them across your devices;
  • showing notification previews;
  • the automated email features described in section 7.

  This license ends when your content is deleted from our systems, except for copies other people have received and copies kept in backups for the limited time described in our Privacy Policy.

• Our Content: All content provided by us, including software, design, text, graphics, and other materials, is owned by Unsend Inc or its licensors and is protected by intellectual property laws.

7. Automated Email Features

unsend sorts some incoming email (for example, separating personal mail from promotional mail) and creates short summaries of promotional email and calendar invitations. To do this, some incoming email from businesses and organizations, and calendar invitations, is processed by an AI service provider (OpenAI) on our behalf, as described in our Privacy Policy. Your chats, your calls and email between people are not sent to it. Sorting and summaries are generated automatically and can be wrong. Check the original email before relying on a summary, and don't rely on sorting to catch every message that matters to you.

8. Privacy Policy

Your use of the App is also governed by our Privacy Policy, which describes how we collect, use, and protect your personal information.

9. Third-Party Services

The App may contain links to third-party websites or services that are not owned or controlled by us. Some features are provided with content from third parties, such as GIFs from GIPHY and wallpaper photos from Unsplash, and that content is subject to those providers' terms. Email you exchange with people on other email providers is also handled by those providers. We are not responsible for the content, privacy policies, or practices of any third-party sites or services.

10. Deleting Your Account

You can delete your account at any time in the App (Security & privacy checkup ▸ Your data ▸ Delete account), or by following the steps at web.unsend.app/delete-account. Deletion takes effect 7 days after you confirm it, and signing in during those 7 days cancels it. After that, your account and username cannot be restored, and your username will not be given to anyone else.

People you communicated with keep their own copies of your conversations. Our Privacy Policy describes what else we keep and for how long.

11. Termination

We reserve the right to suspend or terminate your account and access to the App, at our sole discretion and without notice, for conduct that we believe violates these Terms or is harmful to other users or the App. Where appropriate and lawful, we will tell you why. Sections 6 (Our Content), 12, 13, 14 and 15 continue to apply after your account ends.

12. Disclaimers and Limitation of Liability

• Disclaimer: The App is provided "as is" and "as available" without any warranties of any kind, either express or implied. We do not guarantee that messages, emails, notifications or calls will always be delivered, or delivered on time.

• Limitation of Liability: To the fullest extent permitted by law, Unsend Inc shall not be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of profits or revenues, whether incurred directly or indirectly, arising from your use of the App.

13. Indemnification

You agree to defend, indemnify, and hold harmless Unsend Inc, its affiliates, licensors, and service providers from and against any claims, liabilities, damages, judgments, awards, losses, costs, or expenses arising out of or relating to your violation of these Terms or your use of the App.

14. Governing Law

These Terms shall be governed and construed in accordance with the laws of the State of New York, United States of America, without regard to its conflict of law provisions.

15. App Stores

If you downloaded the App from the Apple App Store or Google Play, you also agree to the terms of that store. For the iPhone, iPad and Mac apps:

• these Terms are between you and Unsend Inc, not Apple;
• Apple has no obligation to provide maintenance or support for the App;
• Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them.

We may modify or update the App to comply with changes in the stores' policies.

16. Changes to Terms

We reserve the right to modify or replace these Terms at any time. We will provide notice of these changes by updating the "Last updated" date above. For material changes, we will also notify you in the App before they take effect. Continued use of the App after any such changes constitutes your acceptance of the new Terms.

17. Contact Us

If you have any questions about these Terms, please contact us at:

Unsend Inc
Registered Address: 66 Mineola Ave, Roslyn Heights, NY 11577, USA
Email: support@unsend.app

By using unsend, you acknowledge that you have read, understood, and agree to be bound by these Terms of Service.