Yahoo Mail
Gmail
Microsoft Outlook
Zoho Mail
AOL Mail
GMX
ProtonMail
Hushmail
MailShelf Pro
Cryoserver
Athena Archiver
Thexyz
ZixArchive
Hornetsecurity Email Archiving
MailStore
Archive2Azure
Yahoo Mail MailShelf ProI 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.
Cryoserver - Cryoserver is an all-in-one email archiving solution that empowers you to preserve your email in a tamper-evident archive, making you transform your data into a useful archive for everyday use.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Athena Archiver - Athena Archiver Email Archiving Solutions provide enhanced disaster recovery options by enabling automatic off-site email storage and data replication to a mirror site.
Zoho Mail - Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.
Thexyz - Secure premium email service with mobile sync apps for calendar, contacts, tasks, notes and FISMA compliant email archiving.