- Let’s Send an Email Automatically in the Middle of a Workflow (Email investigation chapter) (2019-08-19)
- Utilize Customer Data on Google Sheets as Choices (2019-07-31)
- Let’s Send an Email Automatically in the Middle of a Workflow（Address embed chapter） (2019-07-23)
- Let’s Send an Email Automatically in the Middle of a Workflow (Mail body chapter) (2019-07-04)
- Let’s Send an Email Automatically in the Middle of a Workflow (Basic chapter) (2019-06-27)