Can I save multiple email addresses in the same field

We have workflows that send emails to various people / departments. we have one that send an email to the email address on the account, which is fine for almost every one. But we've just got a block of accounts where we have the account holders email and also a contact email and we need to copy both in.

I don't want to complicate things by including contact email addresses.

We have workflows that send emails to various people / departments. we have one that send an email to the email address on the account, which is fine for almost every one. But we've just got a block of accounts where we have the account holders email and also a contact email and we need to copy both in.

I don't want to complicate things by including contact email addresses.