Apps Related to Spam Filtering

iRedMail is a comprehensive, free, and open-source mail server solution designed for ease of deployment and maintenance. It bundles popular components like Postfix, Dovecot, and Roundcube, providing robust email, calendar, and contact management capabilities.

MailDrop provides free, disposable email addresses designed to protect your privacy online. Ideal for signing up for services or testing, it offers a simple interface and immediate email access without registration.

Google Voice provides a free U.S. phone number for calling, texting, and voicemail. It offers features like call forwarding, voicemail transcription, and integration with other Google services, simplifying communication across multiple devices.