MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Hacker Evolution Untold - Hacker Evolution Untold is a Hacking Simulation developed and published by Exosyphen Studios.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
Hacknet - Hacknet is another Hacking Simulation created by Team Fractal Alligator and published by Surprise Attack Games.
Mailjet - All-in-one email service provider that provides maximum insight and deliverability results for both marketing and transactional emails.
Uplink - Track business texts & calls in CRM without needing an app