Cash on the Mail
In 2017, WPForms acquired WP Mail SMTP, and recently a Pro version was announced. The Pro features include integration with Outlook 365 and Amazon SES, along with email logging and notification management.
If you are looking for MailChimp alternatives, then give this post from Victor Zhou a read. Victor explains how moving froim Mailchimp to Sendy cut his costs “by 100x.” 💸