Contact mail.cx
We aim to respond to genuine inquiries within two business days. Please use the channel that fits your request — automated triage routes faster that way.
Response time: typically within 2 business days. Security and abuse reports are prioritized.
General support
Questions about how mail.cx works, your account, custom domains, API integration, or billing.
Billing and subscriptions
Pro subscription changes, invoices, refunds within the 15-day window on your first subscription payment, or VAT receipts. Please include your account email and the Paddle receipt ID if available.
Privacy and GDPR data requests
Data subject access, deletion, or rectification requests under the GDPR / UK GDPR / CCPA. We will verify the request belongs to the account holder before action and respond within the statutory window.
Abuse and phishing reports
Report inboxes used to phish, spam, or harass third-party services. Include the offending address, timestamps, and any evidence (headers, screenshots). We act on confirmed abuse reports same-day where possible.
DMCA / copyright notices
Notices must follow 17 U.S.C. § 512(c)(3): identify the work, identify the infringing material, state a good-faith belief and accuracy, and include a physical or electronic signature. Counter-notices follow the same format.
Press and partnerships
Press inquiries, integration partnerships, or content collaboration. Mention your publication or organization and the angle.
Operator
mail.cx is operated by SICHUAN HAONI E-COMMERCE CO., LTD. We are a small remote team and do not maintain a public walk-in office. All formal correspondence should go through the email channels above.