Email campaigns are a single email that you send at any given time to a group of contacts.
The problem with email campaigns is that the new contacts you have will not see the first emails you have sent.
On the other hand, with drip campaigns you define a series of minimum characteristics that the group of people you want to focus on must meet.
In this way, each new contact that meets these characteristics will immediately enter the drip campaign.
For example: You have a drip campaign whose first welcome email is scheduled to be sent on the first day a person signs up for your website.
Each person who registers on your website will automatically receive the welcome email.
Drip campaigns are used by sales teams, marketing teams, and customer service.