Here are the steps:
1. Please make sure DVR or NVR has been connected to the internet successfully. You can judge by the picture below.
If it always keeps disconnected, please follow the below instruction to have a try.
We suggest you use Gmail, not Yahoo or Hotmail.
2. Please enable alarm and email alerts function.
3. Log in Google account, go to 'Security', then turn on '2-Step Verification'. Click on 'App Password' to create your App Password (16 digits).
4. Please set up an email in the DVR setting like the picture below. If the mail test succeeds, it is working.
The SMTP server is smtp.gmail.com
The Port is 465/587
Tick the SSL
The user name is your Gmail account
The password is your App password (16 digits) from Google
The sender is your Gmail account
The receiver can be any email.
If the mail testing succeeds, you will receive the email notification for the motion detection from the cameras.