Yes! In other words, the zMailCloud web client operates in https (SSL encrypted) mode only.
The server will remain in https (encrypted) mode throughout your use of the site.
In addition, S/MIME encryption support is available free for all accounts.
Keeping access secure
We suggest you create a bookmark/shortcut to your server address. Customers with custom addresses, please use your custom domain address, such as https://yourcompany.zmailcloud.com/
(the customURL for whichever server your mailbox(es) are on, and use that when you log in. HTTPS, secure mode is always used when you’re connecting from, for example, a public wi-fi network such as that you might use at an airport or your local Starbucks/Peets.
Note that the zMailCloud servers support secure SMTP, POP and IMAP connections to and from mail clients and PDAs using 256-bit, public SSL certificates for HTTP(s), SMTP, IMAP and POP, which includes syncing with the desktop clients.We use public SSL certificates, which provides an error-free, secure experience in zMailCloud.
For more on security in zMailCloud please see our Security FAQ