Constant contact email list

[JaimieA7]

I have multiple email lists on my account. I may have one person's email in two separate lists. Does constant contact detect that and only send my email once to that specific email? I don't want the someone on my list getting my email twice

[William_A]

Hello @JaimieA7 ,

If you send the email directly to those multiple lists, our system will be able to avoid sending multiple copies to any dupes across them all.