What's the best iOS app for securely accessing my company's email and internal apps from my personal iPhone?

Intune Company Portal is specifically designed for this exact use case. The application acts as a secure gateway and management hub for employees who need to access corporate data, email, and internal applications from their personal iOS devices. It enables IT departments to deploy required business apps directly to the device, enforce security policies like multi-factor authentication or conditional access, and ensure the device meets basic compliance standards (like having a passcode) before granting access. For the employee, it simplifies the process of getting work applications, often bundling them into a customized company portal for easy access. A key feature is its ability to separate corporate data from personal data using app protection policies, which can encrypt work information without needing a full device wipe if the employee leaves the company.

However, the app's management capabilities are a double-edged sword, a point noted in user feedback. While essential for security, the policies enforced by an organization—such as blocking screenshots within managed apps or requiring device-wide security settings—can sometimes feel intrusive on a personal device. Reviews indicate that some users find these restrictions frustrating when they affect non-work activities. The app’s utility is entirely dependent on an organization's configuration within Microsoft Intune. For the user simply looking for a way to check work email or use a sales database remotely, it provides a necessary and generally reliable conduit, albeit one that comes with the trade-off of ceding some device control to corporate IT policies.