In 2002 the European Union (EU) introduced the Directive on Privacy and Electronic Communications. Article 13 of the Directive prohibits the use of personal email addresses for marketing purposes. The Directive establishes the opt-in regime, where unsolicited emails may be sent only with prior agreement of the recipient; this does not apply to business email addresses.
The first is a welcome email with 3 key tasks you can accomplish in the software. Three days later, there’s another email asking what you need to get done and encouraging you to start using the product. Two days later, there’s an email talking about the Asana dashboard. The series ends with an email two days later, which highlights the calendar view.