1. Go to Administration > Notifications > General Settings.
2. Configure email notification settings.
   1. In the SMTP server field, specify the endpoint name, or IPv4 or IPv6 address of the SMTP server.
   2. Specify the port used by the SMTP server.

      Valid port numbers are 1 to 65535.

   3. In the From field, specify the email address that displays as the sender of the notification.

      If you want to enable ESMTP in the next step, specify a valid email address.

   4. Optionally enable ESMTP.
   5. Specify the username and password for the email address you specified in the From field.
   6. Choose a method for authenticating the agent to the server:

      • Login: Login is an older version of the mail user agent. The server and agent both use BASE64 to authenticate the user name and password.

      • Plain Text: Plain Text is the easiest to use but can also be unsafe because the user name and password are sent as one string and BASE64 encoded before being sent over the Internet.

      • CRAM-MD5: CRAM-MD5 uses a combination of a challenge-response authentication mechanism and a cryptographic Message Digest 5 algorithm to exchange and authenticate information.

3. NTLM: NTLM authentication uses a challenge/response mechanism to ensure that users prove to the server that the provided password is correct for the user account.

   Further encrypt the NTLM authentication by enabling Use SSL/TLS encryption.
    

To be able to configure the notifications detection that will be received by email, follow these steps:

1.  Go to Administration > Notification > Administrator.
2. A new page will show, go to the Email tab and enable all the detection notifications that you want to be received via email. (You can either put an email address or send a notification directly to the user with an agent with domain permissions.)
3. Scroll down below and click Save.

To test if the alert email setup in Apex One is working correctly, follow these steps:

1. Ensure that you have configured the notification in Administration > Notification > General Settings.
2. If you are using On-prem, there is no test button to check if the email is working. However, you can download eicar (https://www.eicar.org/?page_id=3950) and try to load it. Check if it will notify via email.