# 3. Câu hỏi thường gặp

- [1. Spam là gì và làm sao để email không bị lọc spam ?](https://help.slimemail.vn/start/cac-buoc-chuan-bi/3.-cau-hoi-thuong-gap/1.-spam-la-gi-va-lam-sao-de-email-khong-bi-loc-spam.md)
- [2. Gmail yêu cầu gì để đảm bảo email không bị vào spam hoặc bị chặn?](https://help.slimemail.vn/start/cac-buoc-chuan-bi/3.-cau-hoi-thuong-gap/2.-gmail-yeu-cau-gi-de-dam-bao-email-khong-bi-vao-spam-hoac-bi-chan.md)
- [3. Slimemail theo dõi lượt mở email như thế nào?](https://help.slimemail.vn/start/cac-buoc-chuan-bi/3.-cau-hoi-thuong-gap/3.-slimemail-theo-doi-luot-mo-email-nhu-the-nao.md)
- [4. Vì sao email được thống kê trong báo cáo là ở Mỹ ?](https://help.slimemail.vn/start/cac-buoc-chuan-bi/3.-cau-hoi-thuong-gap/4.-vi-sao-email-duoc-thong-ke-trong-bao-cao-la-o-my.md)
- [5. Email bị trả lại (bounce email) là gì ?](https://help.slimemail.vn/start/cac-buoc-chuan-bi/3.-cau-hoi-thuong-gap/5.-email-bi-tra-lai-bounce-email-la-gi.md)


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