Acceptable Use & Anti-Spam Policy

1. Core Policy Commitment

SiSender maintains a zero-tolerance policy towards unsolicited bulk spam, deceptive messaging, and predatory outbound practices. Our platform is engineered strictly for verified, professional business-to-business (B2B) communications. Violation of this policy results in immediate tenant suspension without refund.

2. Mandatory Sending Requirements

Every email campaign dispatched through the SiSender engine must adhere to the following technical and legal standards:

• Legitimate B2B Context: Messages must be relevant to the recipient's professional corporate role. Outbound consumer marketing is strictly forbidden.
• Accurate Header Information: The From name, reply-to address, and originating domain must accurately identify the sender's legal business entity.
• Physical Postal Address: Every outbound email template must include a valid physical postal address for the sender entity.
• RFC 8058 One-Click Unsubscribe: Every campaign message must support automated one-click unsubscribe headers allowing recipients to opt out without friction.
• Immediate Suppression: Unsubscribe requests and hard bounce notifications are permanently recorded and suppressed globally.

3. Prohibited Content & Activities

• Purchased third-party scraped consumer lists or hashed email dumps.
• Phishing, credential harvesting, malware, or deceptive software distribution.
• Cryptocurrency speculation, high-yield investment programs (HYIP), or multi-level marketing (MLM).
• Adult entertainment, pharmaceuticals, gambling, or unregulated financial services.
• Attempting to bypass mailbox warmup rate limiters or deliberately forging email headers.

4. Abuse Reporting

If you receive an unwanted email dispatched through the SiSender platform, forward the message along with full headers to: abuse@sisender.com. We investigate all complaints within 12 business hours and enforce immediate domain suppression.