Mailchimp is the default first email marketing platform for many businesses. The interface is familiar, templates are plentiful, and the free plan lets small senders trial the product.
The trade-off is cost as the list grows. Mailchimp bills for all contacts including unsubscribed ones, raised prices repeatedly since 2022, and reduced the free plan from 2,000 to 250 contacts. Many growing businesses comparison-shop alternatives once they hit a few thousand contacts.
Mailchimp was founded in 2001 and is headquartered in Atlanta, USA.