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SingleSend

Terms of Service

Last updated: April 6, 2026

1. Acceptance of Terms

By accessing or using SingleSend ("the Service"), operated by SingleSend, Inc. ("Company," "we," "us," or "our"), you ("User," "you," or "your") agree to be bound by these Terms of Service ("Terms"). If you do not agree, do not use the Service. By clicking "Sign up," "I agree," or by otherwise accessing the Service, you acknowledge that you have read, understood, and agree to these Terms, which constitute a legally binding agreement under the Electronic Signatures in Global and National Commerce Act (ESIGN Act) and the Uniform Electronic Transactions Act (UETA).

2. Description of Service

SingleSend is a multi-channel messaging platform that allows users to send SMS, email, and voice messages to contacts and groups. The Service includes AI-powered features such as message composition, voice cloning, contact enrichment, smart scheduling, and analytics. The Service is intended for businesses and individuals who have an existing relationship with their contacts and have obtained proper consent to communicate with them.

3. Account Registration

You must provide accurate, current, and complete information when creating an account. You are responsible for maintaining the security of your account credentials and for all activity that occurs under your account. You must be at least 18 years old to use the Service. You agree to notify us immediately of any unauthorized use of your account.

4. Acceptable Use

You agree not to use the Service to:

  • Send unsolicited messages (spam) or violate any anti-spam laws including CAN-SPAM, TCPA, CASL, or GDPR
  • Send messages to contacts who have not provided explicit, documented consent to receive messages from you
  • Send messages to purchased, rented, scraped, or harvested contact lists
  • Send messages to contacts on the National Do-Not-Call Registry or any applicable do-not-call list without a valid exemption
  • Spoof, falsify, or manipulate caller ID, sender identity, or email headers
  • Send messages related to regulated industries (healthcare, financial services, debt collection, cannabis) without compliance with industry-specific regulations (HIPAA, GLBA, FDCPA, etc.)
  • Harass, threaten, defame, or impersonate others
  • Transmit malware, phishing links, or harmful content
  • Use the Service for any illegal purpose or in violation of any applicable law
  • Interfere with or disrupt the integrity or performance of the Service
  • Attempt to gain unauthorized access to the Service or its related systems

Violation of this Acceptable Use Policy may result in immediate suspension or termination of your account without notice or refund. We reserve the right to investigate and report any suspected violations to the appropriate authorities.

5. Messaging Compliance

You are solely responsible for complying with all applicable messaging regulations in every jurisdiction where your contacts reside. This includes but is not limited to:

  • TCPA (United States): You must obtain prior express written consent before sending SMS or making voice calls to contacts. You must honor opt-out requests immediately. You must not send messages using artificial or pre-recorded voices without proper consent. You must comply with the National Do-Not-Call Registry.
  • CAN-SPAM (United States): All commercial email must include a valid physical postal address, a clear unsubscribe mechanism, and accurate header and subject line information. You must honor unsubscribe requests within 10 business days.
  • CASL (Canada): You must obtain express or implied consent before sending commercial electronic messages. Messages must include sender identification, a physical mailing address, and a functional unsubscribe mechanism.
  • GDPR (EU/UK): You must have a lawful basis (consent, legitimate interest, or contractual necessity) for processing personal data. You must honor data subject rights requests promptly.

SingleSend provides compliance tools (opt-out processing, quiet hours, unsubscribe handling, consent tracking) but these tools do not guarantee compliance. You are the data controller for your contacts' data and bear full responsibility for lawful use of the Service.

6. Voice Cloning

The voice cloning feature creates a synthetic voice profile from your voice recording. By using this feature, you consent to the processing of your voice data by our sub-processor (ElevenLabs) for the sole purpose of generating your voice profile. Voice data is classified as biometric data in certain jurisdictions.

You agree that you will not:

  • Clone the voice of any person other than yourself without their explicit, documented, written consent
  • Use voice cloning to impersonate public figures, celebrities, politicians, or any specific individual
  • Create voice clones of minors (under 18 years of age)
  • Use cloned voices for fraud, deception, deepfakes, or any misleading purpose
  • Use cloned voices to deliver pre-recorded messages without disclosing the use of artificial voice technology as required by the TCPA and applicable state laws

You may delete your voice profile at any time from Settings. Upon deletion, voice data will be purged from all systems, including our sub-processor, within 24 hours. Voice profiles are automatically deleted upon account deletion.

7. Intellectual Property

Your content: You retain all ownership rights to content you create, upload, or transmit through the Service, including contacts, messages, and voice recordings. You grant SingleSend a limited, non-exclusive license to process this content solely to provide and improve the Service.

Our platform: SingleSend and its licensors retain all rights to the Service, including software, AI models, designs, trademarks, and documentation. These Terms do not grant you any rights to our intellectual property except the limited right to use the Service as described herein.

AI-generated content: Message drafts, suggestions, and other outputs generated by AI features are provided for your use. We do not claim ownership of AI-generated outputs. You are responsible for reviewing and approving all AI-generated content before it is sent.

8. Data Handling

Personally identifiable information (PII) including contact details, message content, and voice data is encrypted at rest using AES-256-GCM encryption. We do not sell your data or your contacts' data. See our Privacy Policy for full details on how we collect, use, store, and protect your information.

9. Billing, Cancellation & Refunds

Plans are billed monthly in advance. Send limits are hard caps — you will never be charged overage fees. You may cancel your subscription at any time from Settings. Upon cancellation:

  • Your account remains active until the end of the current billing period
  • No partial refunds are provided for unused time within a billing period
  • Scheduled messages will continue to be sent until the end of the billing period

Refund policy: We do not provide refunds for subscription fees already charged. If you believe you were charged in error, contact billing@singlesend.com within 30 days of the charge. We will review and respond within 5 business days.

Suspension for non-payment: If payment fails, we will attempt to collect for up to 14 days. After 14 days of failed payment, your account may be suspended. Suspended accounts cannot send messages. Data is retained for 90 days after suspension, after which it may be permanently deleted.

Suspension for policy violation: If your account is suspended for violating these Terms, no refund will be provided. You may contact us to appeal the suspension.

10. Account Deletion

You may request full account deletion from Settings. Upon request, all data (contacts, messages, voice clone, scheduled messages, analytics) will be purged within 30 days. Billing records are retained for the legally required period (7 years). See our Privacy Policy for complete data retention details.

11. Indemnification

You agree to indemnify, defend, and hold harmless SingleSend, its officers, directors, employees, agents, and affiliates from and against any and all claims, damages, losses, liabilities, costs, and expenses (including reasonable attorneys' fees) arising out of or related to:

  • Your use of the Service or any activity under your account
  • Your violation of these Terms or any applicable law or regulation
  • Your violation of any messaging regulation including TCPA, CAN-SPAM, CASL, or GDPR
  • Any claim that messages you sent through the Service violate the rights of a third party, including privacy, intellectual property, or publicity rights
  • The content of any messages, contacts, or data you upload to or transmit through the Service
  • Your use of voice cloning features, including any claims related to impersonation or unauthorized use of another person's voice

This indemnification obligation will survive the termination of your account and these Terms.

12. Disclaimer of Warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. SINGLESEND DOES NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR SECURE, OR THAT ANY DEFECTS WILL BE CORRECTED.

SINGLESEND DOES NOT WARRANT THE ACCURACY, COMPLETENESS, OR LEGALITY OF ANY CONTACT DATA YOU UPLOAD, THE DELIVERABILITY OF ANY MESSAGES SENT THROUGH THE SERVICE, OR THE ACCURACY OF AI-GENERATED CONTENT. MESSAGE DELIVERY DEPENDS ON THIRD-PARTY PROVIDERS (TWILIO, RESEND) AND IS SUBJECT TO THEIR SERVICE AVAILABILITY AND POLICIES.

SINGLESEND DOES NOT PROVIDE UPTIME GUARANTEES OR SERVICE LEVEL AGREEMENTS UNLESS SEPARATELY AGREED IN WRITING.

13. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, SINGLESEND SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING BUT NOT LIMITED TO LOSS OF PROFITS, DATA, BUSINESS, GOODWILL, OR OTHER INTANGIBLE LOSSES, ARISING OUT OF OR RELATED TO YOUR USE OF THE SERVICE, REGARDLESS OF THE THEORY OF LIABILITY.

SINGLESEND'S TOTAL AGGREGATE LIABILITY FOR ALL CLAIMS ARISING OUT OF OR RELATED TO THESE TERMS OR THE SERVICE SHALL NOT EXCEED THE TOTAL AMOUNT OF FEES PAID BY YOU TO SINGLESEND DURING THE TWELVE (12) MONTHS IMMEDIATELY PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR ONE HUNDRED DOLLARS ($100), WHICHEVER IS GREATER.

SINGLESEND IS NOT LIABLE FOR ANY FAILURE, DELAY, OR ERROR CAUSED BY THIRD-PARTY PROVIDERS INCLUDING TWILIO, RESEND, ELEVENLABS, STRIPE, OR GOOGLE/FIREBASE. YOUR SOLE REMEDY AGAINST SUCH PROVIDERS IS GOVERNED BY THEIR RESPECTIVE TERMS OF SERVICE.

THE LIMITATIONS IN THIS SECTION DO NOT APPLY TO LIABILITY ARISING FROM GROSS NEGLIGENCE OR WILLFUL MISCONDUCT BY SINGLESEND, OR TO YOUR INDEMNIFICATION OBLIGATIONS UNDER SECTION 11.

14. Dispute Resolution

Governing law: These Terms shall be governed by and construed in accordance with the laws of the State of Delaware, United States, without regard to its conflict of laws provisions.

Informal resolution: Before filing any formal claim, you agree to first contact us at legal@singlesend.com and attempt to resolve the dispute informally for at least 30 days.

Arbitration: Any dispute not resolved informally shall be resolved by binding arbitration administered by the American Arbitration Association (AAA) under its Commercial Arbitration Rules. The arbitration shall take place in Delaware or remotely at the arbitrator's discretion. The arbitrator's award shall be final and binding, and judgment may be entered in any court of competent jurisdiction.

Class action waiver: You agree that any disputes will be resolved on an individual basis and not as part of a class, consolidated, or representative action.

Exceptions: Either party may seek injunctive or equitable relief in any court of competent jurisdiction for claims related to intellectual property infringement or unauthorized access to the Service.

15. Changes to Terms

We may update these Terms from time to time. We will notify you of material changes via email at least 30 days before they take effect. Your continued use of the Service after the effective date constitutes acceptance of the updated Terms. If you do not agree with the changes, you must stop using the Service and may request account deletion.

16. Termination

We may suspend or terminate your access to the Service at any time, with or without cause, and with or without notice. Grounds for termination include but are not limited to violation of these Terms, violation of messaging regulations, non-payment, or suspected fraudulent activity. Upon termination, your right to use the Service ceases immediately. Sections 7, 8, 11, 12, 13, and 14 survive termination.

17. Severability

If any provision of these Terms is found to be unenforceable, the remaining provisions will continue in full force and effect. The unenforceable provision will be modified to the minimum extent necessary to make it enforceable while preserving its original intent.

18. Entire Agreement

These Terms, together with our Privacy Policy, constitute the entire agreement between you and SingleSend regarding the Service and supersede all prior agreements, understandings, and communications.

19. Contact

Questions about these Terms? Contact us at legal@singlesend.com.