Our email service provider is currently experiencing intermittent issues with login to email service. Engineers at Open SRS are currently working for the fix.
We recommend you to use the following webmail to access and send emails in the meantime - https://mail.b.hostedemail.com.
You can also change your Incoming/Outgoing server to mail.b.hostedemail.com in your email browser ie. Outlook, Mac Mail until the service resumes when you can then revert back to mail.worldsecureemail.com.
Business Catalyst Status page: https://status.businesscatalyst.com