VoIPstudio
Yahoo Mail
Gmail
Microsoft Outlook
Zoho Mail
AOL Mail
GMX
ProtonMail
Hushmail
Barracuda Email Security Gateway
Proofpoint Email Security and Protection
Symantec Email Security.cloud
Cisco Email Security
FortiMail
Area 1 Security
Security Gateway
Barracuda Email Protection
Yahoo MailI have been using yahoo mail for quite some time. However, I am not really impressed with their product or their improvements. Since 2013 I had issues regarding hacking, their advertisement placement is very frustrating, their platform is very slow and these factors are some to name a few. An alternative email platform that I would recommend and I am currently using is Milfence which offers an secure email service offering end to end encryption and a protected platform.
Gmail - Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.
Proofpoint Email Security and Protection - Learn about Proofpoint's email security solutions that protect organizations against threats such as email fraud, phishing, spam, bulk email, and viruses.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Symantec Email Security.cloud - Symantec Email Security.cloud provides always-on, inbound and outbound email security against malware, targeted attacks, and advanced threats
Zoho Mail - Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.
Cisco Email Security - Cisco Email Security protects against ransomware, business email compromise, spoofing, and phishing.