Desktop App Terms

1. About these terms

1.1 These Desktop App Terms are a contract between you and MIRA NOVUM LTD, a company registered in England & Wales under company number 17465260, whose registered office is at 128 City Road, London, United Kingdom, EC1V 2NX (“Mira Novum”, “we”, “us” and “our”). They govern your download, installation and use of the Mira Novum Email Verifier for Windows (the “App”), whether you get it from our website, a release page we link to or the Microsoft Store.

1.2 The App terms form part of our Terms and Conditions, which apply to your account and to anything you do on miranovum.com. Our Acceptable Use Policy, Privacy Policy and Data Sharing Terms also apply. If these terms and the Terms and Conditions conflict on anything about the App, these terms win. If you got the App from the Microsoft Store, the Store's own terms also apply between you and the Store.

1.3 By installing or using the App you accept these terms. If you use it for a business, you confirm you have authority to accept them for that business.

2. Licence

2.1 We grant you a personal, non-exclusive, non-transferable, revocable licence to install and use the App on computers you control, for checking email address lists that you are entitled to process, for your own lawful business purposes.

2.2 You must not: copy, modify, adapt, translate or create derivative works of the App; sell, rent, lend, sublicense, distribute or publish it, except by linking to our download page or Store listing; decompile, disassemble or reverse engineer it, except to the extent the law allows despite this restriction; remove or work around its rate limits, concurrency caps or the refusal to send messages; or use it to build a service for others.

2.3 We own the App and all intellectual property in it. Feedback you send us may be used by us without restriction or payment.

3. What the app does

3.1 For each address in a list you open, the App checks the syntax, looks up the domain and its mail servers, flags disposable, role and free-mail addresses, and, where your network allows outbound port 25, asks the receiving mail server whether it would accept mail for the mailbox, tests the domain with a made-up address to detect catch-all servers, and retries servers that ask it to try later. It never sends a message: the command that would send one is refused inside the App.

3.2 When port 25 is blocked or mail servers refuse your connection, the App can send the addresses that passed the first checks to our verifier through your account. Those checks are verification jobs under our Terms and Conditions: your plan’s verification allowance is used first, then verification credits, and results that stay unknown are not charged.

3.3 Results describe what the receiving servers answered at the time. Some providers accept every address at first or never confirm mailboxes, and the App reports those as unknown. Scores are indicators for sorting your list, not a promise that an email will be delivered.

4. Your responsibilities

4.1 You decide which lists to check and what to do with the results, and you are responsible for that, including having a lawful basis under the UK GDPR for the personal data in your lists and following PECR when you send marketing.

4.2 Mailbox checks are made from your internet connection. Keep the rate limits at or below their defaults unless you understand the effect: mail servers and blocklist operators may restrict a connection that checks too many addresses too fast, and we are not responsible for restrictions placed on your connection or your domain.

4.3 Use your own email address on a domain you control as the sending address for the checks. Do not use the App to test addresses you have no reason to hold, to discover addresses by guessing, or to check addresses on behalf of others.

5. Data the app sends to us

5.1 Without a connected account the App sends us nothing. With a connected account it sends what is described in the Desktop email verifier section of our Privacy Policy: the addresses you ask our verifier to check; the results for rows that came from Mira Novum (lists sent from your dashboard or the extension, and exports with their Record ID column), which appear in your account; only with your separate record matching opt-in, SHA-256 hashes of company addresses with a definite result, which update a matching record we already hold and are otherwise discarded; and, only with your separate sharing opt-in, company-level signals.

5.2 The App keeps your connection code in your computer’s credential store. You can disconnect every computer from your dashboard at any time.

6. Record matching

6.1 Record matching is off until you tick it. When you switch it on (version 2026-10-29), the App sends us the hashes described in our Privacy Policy, and you allow us to use the results they carry to correct the verification status and date of business email addresses we already hold. You confirm that you were entitled to check the addresses concerned.

6.2 Credits for records updated this way, where offered, are verification credits under the rules and limits shown in the App at the time, granted in steps; they have no cash value. You can switch record matching off at any time; that stops future hashes being sent.

7. Company-level sharing and your licence to us

7.1 Sharing is off until you tick it. When you switch it on and accept the data sharing terms (version 2026-10-27), you grant Mira Novum a worldwide, perpetual, irrevocable, royalty-free, transferable licence, with the right to sublicense, to use, store, verify, combine, publish, license and otherwise exploit the company-level signals you share, as part of our database and services. You confirm that you were entitled to check the addresses the signals come from.

7.2 Shared signals go to a review area and only enter our data after our checks and independent confirmations. Credits for accepted signals, where offered, are verification credits under the rules and limits shown in the App at the time; they have no cash value. You can switch sharing off at any time; that stops future sharing.

8. Installation, signing and updates

8.1 The installer we publish on our website is not signed with a paid code signing certificate, so Windows may warn you before it runs. Check the SHA-256 checksum we publish on the download page before you install it. The Microsoft Store version is signed by Microsoft.

8.2 We may publish new versions at any time, including to change or remove features or for security and legal reasons. The App tells you when a newer version is published; older versions may stop connecting to your account.

9. No warranty

9.1 The App is provided free of charge, as is and as available. To the extent the law allows, we give no warranty that it will be uninterrupted or error free, that any mail server will answer it, that its results are accurate or complete, or that your network allows the checks it makes.

9.2 If you are a consumer, nothing in these terms affects your statutory rights, including your rights about digital content under the Consumer Rights Act 2015.

10. Limitation of liability

10.1 Nothing in these terms excludes or limits our liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, or for any other liability that cannot be excluded or limited by law.

10.2 Subject to that, we are not liable for: your use of the App or of its results; restrictions that mail servers, internet providers or blocklist operators place on your connection or domain; loss of profits, revenue, business, goodwill or anticipated savings; loss or corruption of data held only on your computer; or any indirect or consequential loss.

10.3 If you are a business customer, and subject to the first paragraph of this section, our total liability arising out of or in connection with the App is limited to the greater of £100 and the total fees you paid us in the 12 months before the event giving rise to the claim. This cap is shared with the cap in our Terms and Conditions.

11. Suspension and termination

11.1 We may revoke connection codes, switch off record matching or sharing for your account, or stop a version of the App connecting, where we reasonably believe you have broken these terms or the law, or where it is needed for security or legal reasons.

11.2 You can stop using the App at any time by uninstalling it and disconnecting it on your dashboard. Uninstalling it removes the App; files you saved stay where you saved them.

12. Changes, law and contact

12.1 We may change these terms. We will post the new version on this page with its date and tell you in the App or by email about any change that materially affects you.

12.2 These terms are governed by the law of England and Wales, and the courts of England and Wales have exclusive jurisdiction, except that consumers living elsewhere keep the protection of the mandatory law and courts of where they live.

12.3 Questions about these terms: [email protected]. Data protection questions and rights requests: [email protected].