What is the best alternative to Mailchimp?

In my opinion, ZeptoMail by Zoho Mail is the best alternative, if you are a small business owner or a Startup. For Mid or Large businesses, I would recommend Brevo, previously known as Sendinblue to be the good alternative to Mailchimp.

I would say Brevo is a good alternative

Mailerlite and Get Response, both are best and with many more advance options.

Constant Contact or Kajabi. Both we have used and have found incredible resources to keep up to date with our clients.

Continuous Communication

The phrase "Constant Contact" is likely a proper noun, possibly referring to a brand or service. Without additional context, it does not translate directly into English as it is already in English.

I used ConvertKit free version before converting to mailchimp. they have a lot of nice features in the free version - it just takes some time to learn how to use them all. Its really designed for "creator-type" emails (blogging - paid for blog access, etc).

I went from Mailchimp to Aweber, and now I'm using ConvertKit.

In my opinion, one of the best alternatives to MailChimp is SendGrid. I have had excellent results, its API is very easy to implement and it has a large number of features, such as attaching images and personalizing emails.