People typically use the same email for both, but bigger corporations might have a separate billing email address.
I’d personally go with using the same email everywhere since that’s the most common approach and that’s how it’s expected to work by most users. The reason they might enter a different email address could be because they have different email addresses and mix them up. This can be quite confusing when they try to find an email receipt, or when you try to find a charge with the wrong email address.
So keep things simple, use the same email address everywhere, and if people start asking for a separate billing address investigate why and whether it’s really something you need to support. And if you do whether it would be be part of an enterprise plan.
People typically use the same email for both, but bigger corporations might have a separate billing email address.
I’d personally go with using the same email everywhere since that’s the most common approach and that’s how it’s expected to work by most users. The reason they might enter a different email address could be because they have different email addresses and mix them up. This can be quite confusing when they try to find an email receipt, or when you try to find a charge with the wrong email address.
So keep things simple, use the same email address everywhere, and if people start asking for a separate billing address investigate why and whether it’s really something you need to support. And if you do whether it would be be part of an enterprise plan.