Never miss another email, notification or feature release announcement again.
If that doesn't work, you can try the following:
1. Open Gmail, click the Settings icon from the menu > Settings
2. Click Filters and Blocked Addresses > Create a new filter
3. In the "From" field, add either the email address you want to whitelist or the domain. For example, support@ontraport.com or @ontraport.com.
4. Click Create filter, then select "Never send it to Spam."
5. Click Create filter again to finish the process.