What is a key benefit of using Gmail with a custom domain for your business email?

Using Gmail with a custom domain provides the key benefit of offering a professional email address. This means that instead of using a generic Gmail address, your email will reflect your business name, such as yourname@yourbusiness.com. This professional appearance can enhance your company's credibility and trustworthiness in the eyes of clients, partners, and customers.

A well-branded email address is essential for establishing a professional presence and improving communication. It signals to recipients that they are dealing with a legitimate business rather than an individual using a personal email address. This can have a positive impact on how recipients perceive your brand and services.

While other options such as unlimited storage or automatically increasing security may have merits in various contexts, the defining feature of using a custom domain with Gmail is primarily the professional appearance it provides for business communications.