MailerLite is the email marketing platform I use and recommend. They are the most affordable out there. Free plan available.

ConvertKit is recommended if you are a creator. ConvertKit offers a free trial.

GetResponse is the only email marketing platform that features email funnels and webinars included. It is also one of the more affordable email marketing platforms. GetResponse offers a free 30 day trial.

Ontraport is an all-in-one software specializing in email marketing. It also includes membership sites, text message marketing, and more. Ontraport offers a free 14 day trial.