Mailchimp

Mailchimp is the veteran that brought email marketing to the masses. It has evolved into a full marketing platform with a website builder, social posting, ads, and a basic CRM. Its drag-and-drop email editor is iconic and user-friendly. For very small lists, its free plan is still a solid entry point.

However, its pricing structure has become complex and can get expensive as you grow or need advanced features. It's a familiar, all-in-one option, but faces stiff competition from more focused and affordable rivals.