I will add a splitter support but I think we should pick either , or ; not both and I will add info about the splitter in the help link. Though I guess if I pick comma I can just replace semi colon with comma before splitting.
I was also thinking about making an option where the user could pick from a list and it could go to different addresses. Like maybe if the splitter is | we make a choice dropdown and also include an alias with a | splitter so we don't show the real address in the dropdown so the same form could have a choice for Tech Support, Sales etc.
So maybe we have email address like:
and an alias like
and from that we can show a dropdown choice to the user with Sales or Support, then further split by comma to send to the different addresses.