Common SMTP connection settings improvements

With the Latest feature, we have made managing SMTP settings even more convenient by including it in the Connections section.

In addition, we plan to add more existing connections to this section in the future. This will provide service providers with a centralized location to manage all aspects of their connections, including updates, maintenance, and configuration. By having all connections in one place, service providers can easily track and manage their connections, thereby optimizing their workflow and increasing efficiency.