Odoo CRM supports follow-up activities attached to leads and opportunities, including assigned reminders and configurable activity plans.
The available activity actions depend on installed applications. An email activity is a reminder to send an email; it does not by itself establish an automatic email campaign. Activity assignment and deadlines depend on the activity or plan configuration.
Suggested practice exercise +
Use a sample opportunity to assign the next customer call to a colleague, record its due date, complete it and identify the next agreed action. Explain which work was scheduled and which communication still requires a person.
An editorial exercise to adapt to your approved procedure, not a customer result.