Terms of Service

Last updated: July 8, 2026

These Terms of Service ("Terms") govern your access to and use of MustLoop's website and application (the "Service"), operated by Sparkling Opinions, Lda ("MustLoop", "we", "us", or "our"). By creating an account or using the Service, you agree to these Terms. If you do not agree, do not use the Service.

Who we are

The Service is operated by Sparkling Opinions, Lda, a company registered in Portugal (VAT PT517454483) with its registered office at Travessa Fonte do Bispo 17, 3030-243 Coimbra, Portugal. You can reach us at support@mustloop.com.

The Service

MustLoop connects to your Gmail account to surface your professional conversations, remind you to follow up, and help you draft replies. MustLoop is human in the loop: it prepares information and drafts, but you decide what is sent. MustLoop does not send email automatically.

Eligibility and accounts

You must be at least 18 years old and able to form a binding contract to use the Service. You are responsible for maintaining the security of your account and for all activity that occurs under it. You agree to provide accurate information and to keep it up to date.

Your Google account and Gmail

The Service requires you to connect a Google account. Your use of Gmail and other Google services remains subject to Google's own terms. You are responsible for ensuring that your use of the Service, including any messages you send through it, complies with applicable laws and with Google's policies (including anti-spam requirements). You can disconnect your Google account or revoke access at any time.

Acceptable use

You agree not to:

  • use the Service to send spam, unsolicited bulk email, or unlawful, harassing, or deceptive content;
  • violate the rights of others or any applicable law or regulation;
  • attempt to gain unauthorized access to the Service or its systems, or interfere with its operation;
  • reverse engineer or misuse the Service except as permitted by law.

Subscriptions and billing

Some features require a paid subscription. Paid plans are billed through our payment processor (Stripe) on a recurring basis until cancelled. You can cancel at any time; cancellation takes effect at the end of the current billing period.

Taxes. Prices shown are exclusive of VAT. Where VAT applies, it is calculated and added at checkout based on your location and, for business customers, your VAT registration status.

Founding rate. The first 50 subscribers are offered a discounted founding rate. That rate stays fixed for as long as your subscription remains active and uninterrupted, even if our standard prices rise later. If you cancel, the founding rate may no longer be available should you subscribe again.

Refunds. If you are unhappy with the Service for any reason, email us within 30 days of a payment and we will refund it in full, no questions asked. This applies to your first payment on any plan. Outside that window, fees already paid are non-refundable except where required by law. Nothing here limits any statutory refund or withdrawal rights you may have as a consumer.

Intellectual property

The Service, including its software, design, and content (excluding your data), is owned by Sparkling Opinions, Lda and protected by intellectual property laws. You retain all rights to your own data. You grant us the limited rights necessary to operate and provide the Service to you, as described in our Privacy Policy.

Disclaimers

The Service is provided "as is" and "as available" without warranties of any kind, whether express or implied, including fitness for a particular purpose and non-infringement. AI generated summaries and drafts may contain errors; you are responsible for reviewing any content before you send it.

Limitation of liability

To the maximum extent permitted by law, Sparkling Opinions, Lda will not be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of data, profits, or revenue, arising out of or related to your use of the Service. Our total liability for any claim relating to the Service will not exceed the amount you paid us in the twelve months preceding the claim.

Termination

You may stop using the Service and delete your account at any time. We may suspend or terminate your access if you violate these Terms or if necessary to protect the Service or other users. Upon termination, your right to use the Service ceases and we will handle your data as described in our Privacy Policy.

Changes to these Terms

We may update these Terms from time to time. If we make material changes, we will update the "Last updated" date above and, where appropriate, notify you. Your continued use of the Service after changes take effect constitutes acceptance of the updated Terms.

Governing law

These Terms are governed by the laws of Portugal, without regard to conflict of laws principles. The courts of Coimbra, Portugal will have exclusive jurisdiction over any dispute arising from these Terms or the Service, except where mandatory consumer protection law entitles you to bring proceedings in your own country of residence.

Contact us

Questions about these Terms? Contact Sparkling Opinions, Lda at support@mustloop.com.