Acceptable Use Policy

1. Permission to email

You may only send to recipients who have given you permission to contact them (for example, customers, subscribers, or people who opted in). You must not upload purchased, scraped, or rented lists, or contacts harvested without consent.

2. Required content

Every campaign must:

• accurately identify you as the sender and use truthful subject lines and headers;
• include a working one-click unsubscribe mechanism (we add this automatically);
• include a valid physical postal address (we add this automatically); and
• honour unsubscribe requests promptly — we suppress unsubscribed recipients for you.

3. Prohibited content and uses

You must not use the Service to send:

• unsolicited bulk email (spam);
• phishing, fraud, scams, or deceptive “spoofed” messages;
• malware, viruses, or malicious links;
• content that is illegal, infringing, hateful, harassing, or sexually exploitative;
• content promoting prohibited categories where restricted by our providers (e.g. illegal substances, certain regulated financial or pharmaceutical offers).

4. Deliverability standards

You are responsible for keeping bounce and complaint rates low. We monitor these rates and may throttle, suspend, or terminate accounts that exceed acceptable thresholds (generally a bounce rate above 5% or a complaint rate above 0.1%), as these endanger the sending reputation of all users.

5. No interference

You must not attempt to circumvent sending limits, the suppression list, quota controls, or any security feature of the Service, nor probe, scan, or overload our infrastructure.

6. Enforcement

We may investigate suspected violations and cooperate with our infrastructure providers (including Resend) and law enforcement where appropriate. To report abuse, email yangfanglinsf@gmail.com.