Offers a very generous free tier for up to 2,500 subscribers and 15,000 emails per month.
The developers typically offer an evaluation version. This allows you to test the interface and send a limited number of emails to ensure it fits your workflow before you spend a dime.
Highly regarded for its ease of use, with a free plan for up to 1,000 subscribers.
Most websites offering "free license keys" or "cracked" versions of Turbo Mailer bundle their downloads with malware, keyloggers, or ransomware. This can compromise your entire database of email contacts.