> For the complete documentation index, see [llms.txt](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/ii.-system-features/9.-settings/9.7-campaign-management/9.7.3-email-campaign/customers.md).
# Customers
## Customer list
### (1) Information filter
* **Campaign:** The campaign name that contains the customer to filter
* **Contact name:** Customer name to filter
* **Inserted time:** When contacts were added into the campaign
* **Status:** Filter one of status: New, Processing, Called but failed, Sending successfully, Read email, Clicked link, Answered survey, Unsubscribe from mail, Reported as spam, Blocked due to on the blacklist
### (2) Information filter
* **Contact name:** the name of the customer
* **Inserted time:** when the customer was added to the campaign
* **Email:** the customer email
* **Delivery schedule:** the time the email is sent to the customer
* **Status:** statuses are shown as New, Processing, Called but failed, Sending successfully, Read email, Clicked link, Answered survey, Unsubscribe from mail, Reported as spam, Blocked due to on the blacklist
* **Action:** delete corresponding customer
## Add customers to the campaign
* **Step 1:** Admin selects "Add customers" at the Customer List interface:
* **Step 2:** At the popup that opens, the admin selects the campaign, time to send the email (optional), sources to add customers (Contact, Filters and Import data from excel) and click “Confirm”