Guest checkout allowed even with an email already used by a registered account

Hi,

We'd like to understand how guest checkout is supposed to work in this situation:

If a customer places an order as a guest, using the same email address as an already existing registered user account on our site, is the guest checkout supposed to be blocked (asking the customer to log in instead), or is it normal for it to go through without any error?

On our site, the guest checkout currently goes through without any issue, even when the email matches an existing account. We just want to confirm whether this is the expected/normal behavior, or if there's something in our configuration that should be changed.

Thanks in advance

Coopweb

Hi, Does the 'guest' order get placed on the customers account like it would if they had logged in?

Rgds