Terms of service.
Last revised 01 May 2026.
These terms govern your use of the Sennasign chronograph for documents. By opening a paddock you agree to be bound by these terms.
1. The instrument
Sennasign provides an electronic signature service that publishes its own latency. The instrument is operated by Sennasign Inc., a company registered in the Commonwealth of Massachusetts with its principal office at 31 St James Ave, 6th Floor, Boston, MA 02116.
2. Account
You are responsible for safeguarding the credentials of your paddock. Sennasign is not liable for losses arising from the disclosure of your credentials to third parties.
3. Acceptable use
You agree not to use Sennasign for any unlawful purpose, nor to upload documents containing malware, illicit content or material that infringes third-party rights.
4. Termination
Either party may terminate the agreement upon thirty (30) days written notice. Your sealed laps remain in the archive for ten years after termination, in accordance with our retention schedule.
5. Limitation of liability
To the maximum extent permitted by applicable law, Sennasign's aggregate liability shall not exceed the fees paid by you in the twelve months preceding the event giving rise to the claim.
6. Governing law
These terms are governed by the laws of the Commonwealth of Massachusetts, without regard to its conflict-of-laws principles. Any dispute arising out of or relating to these terms shall be brought exclusively in the state or federal courts located in Suffolk County, Massachusetts, and the parties consent to personal jurisdiction in those courts.
6.1 Consumer protection
Nothing in these terms limits or excludes any consumer-protection right guaranteed by applicable Massachusetts consumer protection laws or any equivalent federal statute. Massachusetts residents may contact the Office of the Attorney General, Bureau of Consumer Frauds and Protection, with concerns regarding these terms.
6.2 Dispute resolution
Any dispute that cannot be resolved through good-faith negotiation within sixty (60) days may, at either party's election, be submitted to binding arbitration administered by the American Arbitration Association under its Commercial Arbitration Rules, with the seat of arbitration in Suffolk County, Massachusetts. The parties each waive any right to participate in a class action or class arbitration.
7. Email communications
By creating a paddock, you consent to receive transactional emails from Sennasign at the address you provide. By ticking the marketing consent box during signup, you additionally consent to receive recurring promotional and product emails from Sennasign at that address.
Purpose of emails
Emails may include: account verification links, password-reset links, lap status alerts (drafted, routed, stamped, sealed), security notifications, service announcements and — only with your explicit consent — occasional product and marketing letters.
Email frequency
Frequency varies with account activity. You may receive several transactional emails per lap you participate in; a typical active driver receives between 4 and 12 transactional emails per month. Marketing emails, if opted in, are limited to no more than 2 per month.
Costs
Message and data rates may apply. Sennasign does not charge for emails; any data or storage charges from your email provider apply at their standard rates. Frequency and pricing of provider services are not controlled by Sennasign.
Unsubscribe & help
You can opt out of marketing emails at any time by clicking the Unsubscribe link in the footer of any email — your address will be removed from the marketing register within 24 hours. For help, reply to any email with HELP in the subject line, or write to contact@sennasign.com, or call 1-617-412-8830. Transactional emails (verification, security, lap alerts) cannot be turned off while your paddock is active.
Eligibility
Marketing consent is not a condition of opening a paddock or sealing a lap. Recipients must be 18 years or older.
8. Contact
For questions about these terms, Sennasign can be reached at contact@sennasign.com or by phone at 1-617-412-8830. Our registered office is Sennasign Inc., 31 St James Ave, 6th Floor, Boston, MA 02116, United States.