Effective date: 25 May 2026
Operator: Kopec InnoTech s.r.o.
Registered address: Grafická 3365/1, Smíchov, 150 00 Praha 5, Czech Republic
Company ID (IČ): 21847126
Tax ID (DIČ): Not VAT registered
Registered at: Městský soud v Praze, oddíl C, vložka 407382
Contact email: contact@kopecinnotech.com
Website: www.kopecinnotech.com
1. Introduction and Acceptance
These Terms of Service (‘Terms’) govern your access to and use of the OtterSay service (‘Service’), operated by Kopec InnoTech s.r.o. (‘OtterSay’, ‘we’, ‘us’, ‘our’). By creating an account or sending an email to any OtterSay address, you agree to be bound by these Terms and our Privacy Policy. If you do not agree, do not use the Service.
These Terms constitute a binding contract between you and OtterSay under Czech law. If you are using the Service on behalf of a legal entity, you represent that you have authority to bind that entity to these Terms.
2. The Service
2.1 What OtterSay does
OtterSay provides two email-based services:
- TLDR – send text to tldr@ottersay.com and receive a structured AI-generated summary by return email, including key facts, important implications, and suggested questions. Optionally, place a short focus instruction on the first line of your email before any forwarded content; the service will bias the summary toward those aspects and strip the instruction before processing.
- TTS (Text-to-Speech) – send text to tts@ottersay.com (or tts+voicename@ottersay.com for a specific voice) and receive an email with an audio recording (MP3) of that text read aloud.
The Service is delivered entirely via email. No app, browser extension, or additional login is required beyond your existing email account.
2.2 Delivery and availability
OtterSay uses polling-based email processing. Delivery is not instantaneous — typical response times depend on queue depth, third-party API availability, and network conditions. We do not guarantee any specific response time and we provide no Service Level Agreement (SLA).
We may perform maintenance, updates, or emergency changes at any time. We will use reasonable efforts to notify registered users of planned downtime in advance.
2.3 Supported content
The Service accepts:
- Plain-text and HTML email bodies
- .txt and .html file attachments
- .pdf file attachments (text extracted via OCR where necessary)
We reserve the right to limit maximum input length per request. Inputs exceeding plan limits may be truncated or rejected.
3. Accounts and Eligibility
3.1 Minimum age
You must be at least 16 years old to register for and use OtterSay. By creating an account you confirm you meet this requirement. We will delete accounts and associated data if we discover a user is under 16.
3.2 Account security
OtterSay does not issue passwords. Free-tier accounts are identified solely by your email address (see Section 3.3). Paid accounts are managed through the Paddle customer portal, which has its own authentication. You are responsible for all activity submitted from your registered email address. Notify us immediately at support@ottersay.com if you suspect unauthorised use. We are not liable for any loss resulting from unauthorised use of your account where you failed to take reasonable steps to secure your email.
3.3 Email-side identification
On the email-processing side, you are identified solely by your registered email address. Anyone with access to your email account can submit requests on your behalf and consume your credits. Protect your email account accordingly.
4. Subscription Plans and Credits
4.1 Plans
OtterSay offers Free, Starter, and Pro subscription tiers. Current plan features, credit allowances, and prices are published on our pricing page at ottersay.com/pricing and may be updated from time to time with notice as set out in Section 11.
4.2 Credits
Each request consumes credits proportional to the character count of your submitted content (calculated by ceiling division according to your plan’s character-per-credit rate). Credits are allocated at the start of each billing period and reset monthly; unused credits do not roll over.
4.3 Credit refunds on failure
If a request fails during processing – for example, due to a third-party TTS or summarisation API error – the credits consumed by that request are refunded to your account automatically. Credits are not refunded for requests that complete successfully but whose output does not meet your expectations.
4.4 Payment and billing
Paid plan subscriptions are sold and billed through Paddle.com Market Limited (‘Paddle’), which acts as the Merchant of Record for all purchases. When you subscribe, your purchase contract for billing and payment is formed with Paddle; Kopec InnoTech s.r.o. provides the OtterSay service under these Terms. By subscribing you also agree to Paddle’s Terms of Service, available at paddle.com. Kopec InnoTech s.r.o. does not receive or store your payment card details.
Subscriptions renew automatically at the end of each billing period unless cancelled before the renewal date. You may cancel at any time through the Paddle customer portal (link included in your subscription confirmation email) or by contacting support@ottersay.com. Cancellation takes effect at the end of the current paid period; you retain full access and credits until then.
4.5 Refund policy
Because paid subscriptions are processed by Paddle as the Merchant of Record, all monetary refunds are governed by Paddle’s Refund Policy. Our Refund Policy at ottersay.com/refund-policy explains how this works, including your statutory EU right of withdrawal, and forms part of these Terms.
5. Acceptable Use
5.1 Permitted use
You may use OtterSay to process lawfully obtained content for personal productivity, professional research, and business communication purposes – for example, summarising newsletters, articles, reports, or emails you have the right to process.
5.2 Prohibited use
You must not use OtterSay to submit content that:
- Violates any applicable law or regulation, including Czech law and EU law.
- Infringes the intellectual property rights of any third party.
- Contains personal data of third parties without a lawful basis for sharing it with our processing pipeline.
- Constitutes spam, unsolicited commercial communication, or bulk automated submissions.
- Is designed to circumvent usage limits, abuse the credit system, or reverse-engineer the Service.
- Violates the acceptable use policies of our third-party processors, including Anthropic’s Usage Policy and the ElevenLabs Terms of Service, which apply downstream to content you submit.
- Contains child sexual abuse material (CSAM) or any content that sexually exploits or endangers minors.
- Promotes, facilitates, or instructs violence, terrorism, or other illegal acts.
- Is intended to harass, defame, or harm any individual or group.
We reserve the right to determine, in our sole discretion, whether use constitutes a violation of this Section.
5.3 Consequences of violation
Violation of this Section may result in immediate suspension or termination of your account without refund, and we may report illegal activity to the relevant authorities.
6. Intellectual Property
6.1 Your content
You retain all rights in the content you submit to OtterSay. By submitting content, you grant OtterSay a limited, non-exclusive, royalty-free licence to process that content solely for the purpose of delivering the Service to you. We do not use your submitted content to train AI models.
6.2 OtterSay IP
All rights in the OtterSay brand, website, software, email templates, and documentation are owned by or licensed to Kopec InnoTech s.r.o. Nothing in these Terms grants you any right to use our trademarks, trade dress, or other proprietary materials.
7. Privacy and Data Protection
Our collection and use of your personal data is governed by our Privacy Policy, available at ottersay.com/privacy, which forms part of these Terms. By using the Service you acknowledge that you have read and understood the Privacy Policy.
When you submit content containing personal data of third parties (e.g. forwarding someone else’s email), you are responsible for ensuring you have a lawful basis to share that data with our processing pipeline under GDPR. If you are a business using OtterSay on behalf of clients whose data may be processed, contact us at support@ottersay.com to discuss a Data Processing Agreement.
8. Disclaimers and Limitation of Liability
8.1 No warranty
THE SERVICE IS PROVIDED ‘AS IS’ AND ‘AS AVAILABLE’. TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, OTTERSAY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR THAT AI-GENERATED SUMMARIES OR AUDIO OUTPUT WILL BE ACCURATE OR COMPLETE.
AI-generated summaries are provided for informational convenience only. You should independently verify any facts, figures, or recommendations before relying on them.
8.2 Limitation of liability
TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, OTTERSAY’S TOTAL LIABILITY TO YOU FOR ANY CLAIM ARISING OUT OF OR RELATING TO THESE TERMS OR THE SERVICE WILL NOT EXCEED THE GREATER OF: (A) THE AMOUNT YOU PAID TO OTTERSAY IN THE 12 MONTHS PRECEDING THE CLAIM, OR (B) EUR 50.
IN NO EVENT WILL OTTERSAY BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING LOSS OF PROFITS, DATA, OR GOODWILL, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Nothing in these Terms limits liability that cannot be excluded under mandatory Czech or EU consumer protection law, including liability for death or personal injury caused by our negligence or for fraud or fraudulent misrepresentation.
9. Termination
9.1 Termination by you
You may close your account at any time by contacting support@ottersay.com. Closing your account cancels any active subscription with effect from the end of the current billing period.
9.2 Termination by us
We may suspend or terminate your account immediately without notice if:
- You breach Section 5 (Acceptable Use) or any other material provision of these Terms.
- We are required to do so by law or order of a competent authority.
- Continued provision of the Service to you creates legal, reputational, or security risk.
We may terminate your account with 30 days’ notice for any other reason, including discontinuing the Service entirely. In that case we will refund any unused prepaid subscription fees on a pro-rata basis.
9.3 Effect of termination
Upon termination, your right to use the Service ceases. Sections 6, 8, 9.3, 10, and 11 survive termination.
10. Governing Law and Disputes
These Terms are governed by the laws of the Czech Republic. Any dispute arising out of or in connection with these Terms that cannot be resolved amicably within 30 days shall be submitted to the exclusive jurisdiction of the courts of Praha 5, Czech Republic.
If you are a consumer resident in another EU member state, you may also bring proceedings in the courts of your country of residence, and you retain the benefit of any mandatory protective provisions of your local consumer law.
The European Commission provides an Online Dispute Resolution (ODR) platform at https://ec.europa.eu/consumers/odr. Our email address for ODR purposes is support@ottersay.com.
11. Changes to These Terms
We may update these Terms from time to time. We will notify registered users by email at least 14 days before any material change takes effect. Minor changes (e.g. clarifications, typographical corrections) may be made without notice. The ‘Last updated’ date at the top reflects the most recent revision. Continued use of the Service after the effective date of a change constitutes your acceptance of the revised Terms.
12. Miscellaneous
- Entire agreement: These Terms, together with the Privacy Policy, Cookie Notice, and Refund Policy, constitute the entire agreement between you and OtterSay regarding the Service.
- Severability: If any provision is found unenforceable, the remaining provisions continue in full force.
- Waiver: Our failure to enforce any provision does not constitute a waiver of our right to enforce it in future.
- Assignment: You may not assign your rights or obligations under these Terms without our prior written consent. We may assign ours in connection with a merger, acquisition, or sale of assets.
- Language: These Terms are provided in English. In the event of a conflict between translated versions, the English version governs.