Acceptable Use Policy

1. Permission and consent

You may only send messages to recipients who have given you express, affirmative consent (opt-in) to receive them, or with whom you have a genuine, current business relationship that legally permits the message. Consent must be freely given, specific, and verifiable. You must be able to provide, on request, evidence of how and when each recipient opted in. Genuine one-to-one transactional messages (such as receipts or password resets) are excepted from the marketing-consent requirement but remain subject to this policy.

2. Prohibited list sources

You may not upload, import, or send to addresses obtained from:

• purchased, rented, leased, or otherwise paid-for lists;
• harvested, scraped, or automatically collected addresses;
• third-party, co-registration, or "partner" lists;
• publicly available sources where the recipient did not opt in to your messages; or
• any list where you cannot demonstrate the recipient's consent.

3. Sender identification

Your messages must accurately identify you as the sender. You may not use false or misleading header information, "From," "To," "Reply-To," or routing details, and you may not use deceptive subject lines. Recipients must be able to tell who sent the message and what it is about.

4. Unsubscribe and opt-out

Every marketing message must include a clear, working way to unsubscribe. You must honor opt-out requests promptly and may not charge a fee, require additional information, or place other obstacles in the way of unsubscribing. You must suppress recipients who unsubscribe and must not re-add them without fresh consent.

5. Required message elements

Marketing emails must include a valid physical postal mailing address for the sender, as required by applicable anti-spam laws. This is the sender's obligation; you are responsible for ensuring your messages contain the elements required by the laws that apply to you and your recipients.

6. Prohibited content

You may not use the Services to send or promote:

• illegal goods, services, or activities;
• sexually explicit or adult content;
• gambling, lotteries, or games of chance where prohibited;
• multi-level marketing, pyramid, "get rich quick," or similar schemes;
• pharmaceuticals, controlled substances, or deceptive health or cure claims;
• phishing, malware, spyware, or other malicious or deceptive content;
• hateful, harassing, defamatory, or violent content;
• counterfeit goods or intellectual-property infringement; or
• deceptive, fraudulent, or predatory financial offers.

7. Prohibited sending practices

• sending unsolicited bulk or commercial messages (spam);
• "snowshoeing" or "waterfalling" — spreading volume across IPs, domains, or accounts to evade filters or reputation systems;
• attempting to bypass spam filters, sending limits, or other technical controls;
• creating multiple accounts to evade limits, suspensions, or pricing;
• sharing or reselling your credentials or access without our authorization; or
• tracking or profiling recipients without a lawful basis.

8. Deliverability standards

To protect the reputation of the platform and other senders, your sending must maintain healthy metrics. As a general guideline, you should keep your spam-complaint rate below 0.1% (one complaint per thousand messages) and your hard-bounce rate below 10%. We may throttle, pause, or suspend sending that exceeds these thresholds, generates excessive blacklistings, or otherwise threatens deliverability for others. These figures are guidelines; we may act on harmful sending patterns even within them.

9. Authentication

We strongly recommend that you authenticate your sending domains with SPF, DKIM, and DMARC, and our platform provides tools to help you do so. Properly authenticated domains improve deliverability and reduce the risk of spoofing. We may require domain authentication for certain sending.

10. SMS messaging

If you use SMS features, you must obtain separate, express consent for SMS from each recipient, honor STOP and other opt-out keywords immediately, avoid prohibited content, and comply with carrier requirements and applicable messaging regulations. Do not send SMS to recipients who have not specifically agreed to receive texts from you.

11. Regulated and sensitive data

The Services are not intended for, and you may not use them to process, protected health information (PHI) or other data subject to specialized regulatory regimes that require a separate agreement (such as a Business Associate Agreement under HIPAA). We do not sign Business Associate Agreements. You are responsible for not submitting such regulated data to the Services.

12. Service integrity and security

• do not probe, scan, or test the vulnerability of the Services without authorization;
• do not interfere with or disrupt the Services, for example through denial-of-service activity;
• do not introduce malware or attempt to gain unauthorized access to systems or data; and
• do not reverse engineer or attempt to derive source code except as permitted by law.

13. Compliance with laws

You must comply with all laws applicable to your messaging, including the U.S. CAN-SPAM Act, Canada's CASL, the EU/UK GDPR and ePrivacy rules for marketing consent, telephone and SMS regulations (such as the TCPA) and carrier rules, and all applicable data-protection laws.

14. Enforcement

We may investigate suspected violations and may throttle, suspend, or terminate accounts, remove content, or disable sending — immediately and without notice where necessary to protect the Services, recipients, or other users. We may cooperate with law enforcement and disclose information as required by law. To report abuse of the Services, contact legal@blacklistguard.com.