General contact
General questions, feedback and messages about HocTat.
contact@hoctat.comContact us by email
Each address handles a different type of request: general contact, account support or privacy.
Account support
Questions and support requests related to HocTat accounts.
accounts@hoctat.comPrivacy and data requests
Privacy questions and requests concerning personal data.
privacy@hoctat.comCollaboration
Explore collaboration opportunities
Have an idea for collaborating with HocTat on content, publishing, projects or future business opportunities? Send an introduction and your proposal to our general contact inbox.
Other ways to reach us
Phone and Zalo
For general inquiries. For personal-data requests, please use the privacy email address above.
Phone
For brief general inquiries.
0393 235 670HocTat Zalo contact
Trịnh Tài Kha
Scan the QR code or try searching Zalo using the contact number 0393 235 670. Confirm that the account is Trịnh Tài Kha before messaging.
A personal Zalo account used for HocTat contact, not a verified Zalo Official Account.
Stay safe
Anti-impersonation guidance
- Never send passwords, OTPs, recovery codes or authentication tokens by email, Zalo or phone.
- Verify the sender's actual email address before replying.
- If a message seems suspicious, open the official HocTat website independently.
- An address displayed on this page does not cryptographically authenticate an incoming email.
Updated: 24 October 2026