Great for

• No plans and no contracts, you only pay for the emails that you send
• 2 click process to start sending emails
• One of the most affordable email marketing platforms
• Free set-in email verification and list cleaning
• Use a detailed set of real-time reports to track interactions within your campaigns like clicks, opens and delivery rates
• Built-in clicks heatmap so you can track where your customers are clicking

Be aware that

• Free tier is limited to 10 email sends per day and a total of 2,000 subscribers