Mailchimp is ideal for sending a high volume of emails to a small amount of users. I couldn't imagine using them with a large volume of users, it's literally $0

Mailchimp is ideal for sending a high volume of emails to a small amount of users. I couldn't imagine using them with a large volume of users, it's literally $0.005 per user, imagine if you only need to send a monthly or even weekly email to 1mil+ users, total rape on the per email basis