How to address 2 people in an email?

The most common and safest way is to simply write, "Hi [Name 1] and [Name 2],". This approach is professional yet friendly. If the situation is more formal, "Dear [Name 1] and [Name 2]," is also perfectly fine. For a more casual feel, you could even use "Hello both,". Directly addressing them by name in the greeting is the standard practice here. It’s clear and ensures both people feel included from the start.