Terms of Use

Effective 13 September 2026 · Applies to the Sendant apps for Android (io.sendant) and iPhone, and to the Sendant web client.

These Terms explain the rules for using Sendant. Please read them together with our Privacy Policy.

1. Who provides Sendant

Sendant is provided by VectraSEO LLC ("VectraSEO", "we", "us"), the developer of record on the App Store and Google Play. Sendant is built by Yoni Ryabinski (yoniryabinski.com). These Terms are an agreement between you and VectraSEO LLC.

2. Eligibility — 18 and over

Sendant is rated 18+ and is intended solely for adults. By using Sendant you represent that you are at least 18 years old, that you can agree to these Terms, and that nothing in the law that applies to you prevents you from doing so. Sendant is not directed to children, and we do not knowingly permit anyone under 18 to use it. If we learn that a user is under 18 we will terminate their access.

You accept these Terms in the app itself: on first launch — and again whenever these Terms materially change — Sendant shows the Community Standards and will not run until you tap I agree.

3. Your identity, device keys, and linked devices

Sendant does not use a phone-number account. Your identity is based on cryptographic keys generated and stored on your device. You are responsible for your device, recovery materials, and any activity from your Sendant identity. If you lose access to your device or recovery materials, we may not be able to restore your messages or identity.

You may link a browser to the identity on your phone. A linked browser sends and receives messages as you, and holds a copy of your recent conversations in browser storage, which is a weaker store than your phone's keychain. Link only browsers on devices you control, and revoke any you no longer use. Your phone is the only device that can link or revoke others. Links expire on their own after 30 days without connecting, and revocation is distributed to your contacts over encrypted channels rather than enforced by a server, so a contact whose app has not yet received the update may reach a revoked browser until its certificate expires. You are responsible for what is sent from a device you linked.

4. Acceptable use — zero tolerance

There is no tolerance for objectionable content or abusive users on Sendant. Objectionable content includes, without limitation, harassment and bullying, hate speech and slurs, threats of violence, sexual content involving minors, non-consensual intimate images, sexually explicit material sent to someone who did not ask for it, and scams or spam. Sending any of it is a breach of these Terms, and we will remove the content we can reach and permanently eject the sender.

You may not use Sendant to:

• Violate the law or someone else's rights.
• Threaten, harass, exploit, abuse, or endanger another person.
• Share child sexual abuse material, non-consensual intimate content, or other unlawful content.
• Send spam, malware, phishing, scams, or deceptive messages.
• Infringe anyone's copyright, trademark, or other intellectual-property rights.
• Attempt to disrupt, overload, probe, reverse engineer, or gain unauthorized access to Sendant, its infrastructure, or other users' devices.
• Use network-resilience or relay features to evade controls on systems or networks you do not own or are not authorized to use.

5. User content and encrypted messages

You are responsible for the messages, attachments, profile labels, and other content you create or send through Sendant. Sendant is designed so our infrastructure cannot read end-to-end encrypted message contents. That means we generally cannot proactively review private message content, but we may act on reports, metadata, abuse signals, legal process, or service-protection needs where we have enough information to do so.

6. Reporting, blocking, filtering, and what we do about it

Every Sendant client gives you four controls, and you can reach all of them without leaving the app:

• Report — in any chat, open the … menu and tap Report. Choose a reason, add detail, and optionally attach the recent messages you are complaining about. Because we cannot read end-to-end encrypted content, that attachment is the only way evidence reaches us, so it is offered as an explicit opt-in and never sent without it.
• Block — in the same menu, or by long-pressing the chat in your list. A blocked person's messages and calls never reach you again. Every block can be undone in Settings → Privacy & Security → Blocked contacts.
• Filter — Sendant runs an on-device filter over incoming messages and hides likely-objectionable content behind a confirmation before it is displayed. It is on by default and can be adjusted in Settings → Privacy & Security → Content filter.
• Remove — you can delete any individual message, clear an entire conversation, or delete a contact and their history, at any time, and it takes effect on your device immediately.

Our commitment: a person — not an automated system — reads every abuse report, and we act on each one within 24 hours of receipt. Acting means a human has read the report and decided what to do with it. Where a report is substantiated we remove the reported content from any Sendant infrastructure that still holds it and permanently eject the user who sent it. Where a report is ambiguous or we need something further from you, reaching a final decision may take longer — but you will hear from a person within 24 hours either way. Ejection denies that identity every service we operate: it can no longer publish or be discovered through our key directory, no longer deposit mail to anyone or fetch its own, and no longer receive wake notifications. Because call setup also travels through the mailbox, an ejected identity cannot place or receive calls either. What we cannot do is reach the copies of a message already delivered to someone's device — end-to-end encryption puts those beyond us, and we will not pretend otherwise. Ejection is permanent and is not appealable for child sexual abuse material, credible threats of violence, or repeat harassment.

You can also reach a person directly at hello@sendant.io or through the form at sendant.io/feedback; both go to the same monitored mailbox. Do not include sensitive message content in an email unless you choose to disclose it to us for review.

7. Copyright — notice and takedown

We respond to notices of claimed copyright infringement concerning material on infrastructure we control. Because message content is end-to-end encrypted and transient, in most cases there is nothing for us to act on other than terminating an account; we will do what we can reach.

Send notices to our designated agent at privacy@sendant.io, or to VectraSEO LLC, Attn: Copyright Agent, 243 E 5th Ave #A135, Anchorage, AK 99501, USA. A notice must include: your physical or electronic signature; identification of the work claimed to be infringed; identification of the material claimed to be infringing and enough information for us to locate it; your contact details; a statement that you believe in good faith that the use is not authorised; and a statement, under penalty of perjury, that the information is accurate and that you are authorised to act for the rights holder. If you believe material was removed in error you may send a counter-notice to the same address. We terminate the accounts of repeat infringers.

8. Export control and sanctions

Sendant contains strong encryption and is subject to export-control law, including the United States Export Administration Regulations. By using Sendant you represent that you are not located in, ordinarily resident in, or a national of a country or region subject to comprehensive United States sanctions or embargo; that you are not on any United States government list of prohibited or restricted parties, including the Specially Designated Nationals list, the Denied Persons list, or the Entity List; and that you will not export, re-export, or make Sendant available in breach of any applicable export-control or sanctions law. You are responsible for complying with the import, use, and encryption laws that apply where you are, which in some countries restrict the use of encryption software.

9. Privacy and security limits

Sendant is built for end-to-end encrypted, local-first messaging, but no service can guarantee perfect security, anonymity, availability, or delivery. Your device, operating system, app stores, push providers, network providers, and message recipients may affect your privacy and security. People you message can copy, screenshot, or forward content they can see.

10. Service changes and availability

Sendant is an early-stage service. Features may change, break, disappear, or be unavailable. We may modify, suspend, or discontinue any part of Sendant, including relay, mailbox, notification, or web-client features.

11. No paid terms yet

Sendant is currently offered without in-app purchases, subscriptions, or paid accounts. If paid services are added later, we will provide additional terms before you buy them.

12. Intellectual property

Sendant, its branding, website, app interface, and service components are protected by intellectual-property laws. These Terms do not give you ownership of Sendant or our branding. You keep ownership of content you create, subject to the limited rights needed to transmit, store, deliver, display, and operate that content as part of the service.

Product names and marks belonging to other companies — including Signal, WhatsApp, Telegram, Session, Threema, Briar, and SimpleX — are the trademarks of their respective owners. We refer to them on our comparison pages for identification and comparison only; no affiliation, sponsorship, or endorsement is claimed or implied.

13. Third-party services

Sendant depends on third-party platforms and providers, such as app stores, operating systems, hosting providers, Apple Push Notification service on iPhone, and Firebase Cloud Messaging on both mobile platforms. Their terms and policies may also apply to your use of those services.

14. Termination

You may stop using Sendant at any time. We may limit or terminate access to Sendant if we believe you violated these Terms, created risk for others, or threatened the service's integrity, security, or availability. Sending objectionable content or abusing another user results in permanent ejection, as described in section 6, and we do not require a pattern of behaviour before acting.

15. Disclaimers

Sendant is provided "as is" and "as available." To the maximum extent allowed by law, we disclaim warranties of merchantability, fitness for a particular purpose, non-infringement, uninterrupted operation, perfect security, and guaranteed message delivery.

Some jurisdictions do not allow the exclusion of certain warranties, so parts of this section may not apply to you. Nothing in these Terms limits any non-waivable right you have as a consumer under the law of your country of residence.

16. Limitation of liability

To the maximum extent allowed by law, we will not be liable for indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost data, lost profits, service interruption, or unauthorized access arising from or related to Sendant.

To the maximum extent allowed by law, our total aggregate liability arising out of or relating to Sendant and these Terms will not exceed the greater of the amount you paid us for Sendant in the twelve months before the claim — which is currently nothing, because Sendant is free — or one hundred United States dollars (US$100).

Nothing in these Terms excludes or limits liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation, or for anything else that cannot lawfully be excluded or limited. Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so parts of this section may not apply to you.

17. Indemnity

To the extent permitted by law, you will indemnify and hold harmless VectraSEO LLC and its members, officers, and contractors from third-party claims, damages, and reasonable costs arising out of your breach of these Terms, your misuse of Sendant, or content you send through it. This does not apply where the claim arises from our own breach of these Terms, and it does not apply to consumers to the extent the law where you live does not permit it.

18. Governing law and disputes

These Terms are governed by the laws of the Commonwealth of Pennsylvania, excluding its conflict-of-law rules. You and VectraSEO LLC agree to the exclusive jurisdiction of the state and federal courts located in Pennsylvania for any dispute arising out of or relating to Sendant or these Terms, and each of us waives any objection to venue there.

If you are a consumer resident in the European Union, the United Kingdom, or another jurisdiction whose law gives you the benefit of mandatory local consumer protections, nothing in this section deprives you of those protections or of the right to bring proceedings in the courts of the country where you live.

Before filing anything, please email privacy@sendant.io. Most things are faster to fix than to litigate.

19. For users in the European Union

Under the EU Digital Services Act:

• Point of contact for you. Write to hello@sendant.io. It is read by a person, not solely by automated tools, and you may write in English.
• Point of contact for authorities. Member State authorities, the European Commission, and the European Board for Digital Services may reach us at privacy@sendant.io, or by post at the address in section 1. Communications in English.
• Our content rules and how we enforce them are set out in sections 4 and 6 above, in plain language and in one place. We apply them diligently, objectively, and proportionately, with regard to the fundamental rights of everyone involved.
• If we restrict your account — by ejecting an identity or removing content we can reach — we will tell you what we did and why, and on what ground under these Terms, unless we are legally barred from doing so or the report concerned manifestly illegal content such as child sexual abuse material. If you think we got it wrong, reply to that message or write to hello@sendant.io; a person who was not involved in the original decision will look at it again.
• What we cannot do. Sendant is an end-to-end encrypted private messenger. We do not host a public feed, we cannot read private message content, and we do not monitor it. Our enforcement therefore acts on reports, on metadata, and on the evidence a reporter chooses to give us.

20. General

• Severability. If any provision is held unenforceable, it is modified to the minimum extent needed to make it enforceable, or severed, and the rest stays in force.
• No waiver. If we do not enforce a provision, that is not a waiver of it.
• Assignment. You may not assign these Terms without our written consent. We may assign them to an affiliate or in connection with a merger, acquisition, or sale of assets, on notice to you.
• Entire agreement. These Terms and the Privacy Policy are the entire agreement between you and VectraSEO LLC about Sendant, and replace any earlier understanding about it.
• Force majeure. Neither of us is liable for a failure caused by something outside our reasonable control.
• Notices. We may give you notice in the app or on this page. You give us notice at privacy@sendant.io or at the postal address in section 1.
• Survival. Sections 5, 7, 8, 12, and 15 through 20 survive the end of these Terms.
• App store terms. If you got Sendant from the App Store or Google Play, that store's own terms also apply. Apple and Google are not parties to these Terms and have no responsibility for Sendant, but Apple and its subsidiaries are third-party beneficiaries of these Terms with respect to the App Store version and may enforce them against you.
• Language. These Terms are written in English, and the English version governs.

21. Changes

If we change these Terms, we will update the effective date above and, for material changes, surface a notice in the app or on this page. Continuing to use Sendant after changes become effective means you accept the updated Terms.

Questions about these Terms? Email privacy@sendant.io. To report abuse, email hello@sendant.io or use the in-app report flow described in section 6.