1. Make sure the sender and recipient email address are correct.

2. Check the SMTP server details you given according to email provider data. List of SMTP Servers (Click Here)

3. Make sure you given the sender email password is app password generated from your account settings.

Here's a step-by-step guide on how to create an app password for a surveillance device email alert. (Gmail as example)

Step 1: Access 2-Step Verification

1. Open your email and find the profile on the right-top corner.

2. Click “Manage your Google Account”

3.       Click in the “Security” tab in the left-hand menu.

Step 2: Locate App Password

1. Under “How you sign in to Google”, select 2-Step Verification. (If the status id OFF, turn it ON and follow on screen instructions.)

2. After enable 2-step verification, scroll down to the bottom and click on “App Password”

Step 3: Choose App and Generate Password

1. Click on the “Select app” drop-down menu and choose “Other” (Custom name)

2. Enter a name for your app password, such as “Surveillance System”

3. Click on the “Generate” button.

Step 4: Copy and Use App Password

1. A 16-character app password will be generated. Copy this password and paste it into the appropriate field in your Surveillance System settings.

2.  Click on the "Done" button.

Step 5: Remember and Manage

1. Your app password is now created and ready to use. Keep in mind that app passwords are only valid for the specific app or device you created them for.

2. You can manage and create additional app passwords by returning to the "App passwords" section within 2-Step Verification settings.