Post initial setup, a primary concern will be the log-on issue. If your organization is fine with a separate log-on for your email provider, then this step will be quick. However, that's not typically what businesses want or users expect. In general, users expect to sign onto their desktops and have their email and file sharing sign-ons happen as part of that one-step process. Not surprisingly, this is called Single Sign-On (SSO) and it's enabled in one of three ways: through the use of a back-end directory service like Microsoft Active Directory (AD); an identity management service, like Okta (one of our Editors' Choice winners in that category); or several compatible web services that include SSO along with other apps and email services, like Google G Suite Business and Microsoft Office 365 Business Premium (two of the top providers reviewed here). Which method you choose depends on how your business is configured today and your long-term cloud services strategy. It's definitely a conversation you'll need to have either with your in-house IT staff or your outside IT consultant.
MessageGears is a hybrid email marketing system that combines the security of an on-premises system with the scalability of the cloud. The service connects directly to any local or remote database, data warehouse, e-commerce system, or content management system. There is no need to extract, transform, or load customer data into the system or to move or replicate data. Features include subject line previews and testing, spam testing, and automation, drip and trigger campaigns.