Terms of Service

1. Acceptance of Terms

By accessing or using MailSentry ("the Service"), you agree to be bound by these Terms of Service. If you do not agree to these terms, do not use the Service. These terms apply to all users, including visitors, registered users, and API consumers.

2. Description of Service

MailSentry provides an email validation API that performs syntax checking, MX record verification, disposable email detection, typo correction, role-based detection, free provider identification, and risk scoring. The Service is provided on a subscription basis with various plan tiers.

3. API Usage

You agree to use the API only for lawful purposes and in accordance with these Terms. You may not:

• Use the API to send spam, phishing, or unsolicited communications
• Attempt to reverse-engineer, decompile, or circumvent any security measures
• Exceed the rate limits or usage quotas for your plan tier
• Share API keys with unauthorized third parties
• Use the Service to harvest, collect, or store personal data beyond validation purposes
• Resell API access without prior written consent

4. Accounts and API Keys

You are responsible for maintaining the security of your account credentials and API keys. You must notify us immediately of any unauthorized use. API keys are hashed before storage — we cannot recover lost keys, but you can generate new ones from your dashboard.

5. Billing and Payments

Paid plans are billed monthly through our payment processor, Lemon Squeezy. Prices are as listed at the time of subscription. We reserve the right to change pricing with 30 days' notice. When you exceed your monthly usage limit, API requests will return a 402 status code — you will not be charged overage fees automatically.

Refund Policy: Refunds are available within 14 days of payment if fewer than 10% of your plan's monthly checks have been used. To request a refund, contact support@mailsentry.dev with your account email and reason for the request. Refunds are processed within 5–10 business days. After 14 days or once usage exceeds 10% of your plan's quota, the payment is considered final.

6. Data Handling

MailSentry does not store the email addresses you submit for validation. Email addresses are processed in memory and discarded after the validation response is returned. We store only aggregate usage counts (number of validations per day) for billing and analytics purposes. See our Privacy Policy for full details.

7. Service Availability

We aim for 99.9% uptime but do not guarantee uninterrupted service. We may perform maintenance with or without prior notice. We are not liable for any damages resulting from service downtime or interruptions.

8. Limitation of Liability

The Service is provided "as is" without warranties of any kind. MailSentry shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including loss of profits, data, or business opportunities. Our total liability shall not exceed the amount you paid for the Service in the 12 months preceding the claim.

9. Account Termination

We reserve the right to suspend or terminate your account if you violate these Terms, engage in abusive behavior, or use the Service for illegal activities. You may cancel your account at any time from your dashboard. Upon cancellation, your API keys will be revoked and your data will be deleted within 30 days.

10. DMCA and Intellectual Property

If you believe any content on our platform infringes your intellectual property rights, contact us at support@mailsentry.dev. We will respond to valid DMCA notices in accordance with applicable law.

11. Changes to Terms

We may update these Terms from time to time. We will notify registered users of material changes via email. Continued use of the Service after changes constitutes acceptance of the new Terms.

12. Contact

For questions about these Terms, contact us at support@mailsentry.dev.