Register snippet - multiple emails for &activationEmail?

We're using the &activationEmail field with !Register snippet as we want to send the confirmation to a specific email each time rather than the person submitting the form. Currently, this parameter only seems to accept one value.

We've been hunting around in the core/components looking at the controllers and can see the parameters being passed but are a little reticent to start hacking around at the code. Would anyone be able to give pointers as to the best way to modify in order to send to multiple emails using this field - without breaking the code and preferably keeping the integrity of the snippet so changes aren't destroyed on update?

Thanks

If you don't need the Passwort inside the Mail, you could also send the other Mails via Plugin on the event OnUserActivate

https://docs.modx.com/revolution/2.x/developing-in-modx/advanced-development/modx-services/modmail

There might be something here that would help: http://bobsguides.com/blog.html/2016/07/08/send-registration-email-to-the-admin/.

You can also put in a CC or BCC address.

Couldn't get the cc or bcc to work. In the end, used a posthook as https://docs.modx.com/extras/revo/login/login.tutorials/login.using-pre-and-post-hooks

Sounds good. cc and bcc are tricky because you have to have the case right. I can't never remember which way is correct. For FormIt, I think it's emailBCC and I think it's the same for Register but I'm not sure.