In order to use the Email Actions on a Gmail account where 2-step verification is enabled, the below steps should be followed:

  • Login to Gmail
  • Navigate to Account > Sign-in & security > Signing in to Google
  • Select "App Passwords"
  • Enter your login credentials
  • In the "Select app" drop-down list, choose "Other(Custom name)", and enter an appropriate name
  • Press "Generate"
  • Copy the 16-character password, and use it in the Password field of the relevant email action.

*Note: This password will not be visible to you after it is generated. Therefore, in order to avoid generating a new password every time you use a new Email Action, you may wish to store this password somewhere safe for later use.