SendinBlue is a great alternative to Mailchimp. It’s much cheaper if you have a large database of users but don’t send them emails too frequently. They provide all the tools you’re expecting from a leading email marketing platform, incl. built-in automation features to design all sorts of drip-in campaigns and notification processes.
There is also a plan at $25 per month but it doesn’t allow you to remove the SendInBlue logo. The cheapest logo-free plan, at $39 per month gives you a quota of 60,000 emails per month, more than enough for most SMBs.
SMBs looking for an affordable solution to send transactional emails (via API) and weekly or monthly newsletters to a medium-sized audience. In my opinion, the best alternative to Mailchimp on the market. It also offers basic automation features, which will be sufficient for most notification scenarios (welcome emails, drip-n campaigns, notifications when a user visits a page of the site, etc.). Highly recommended.