If a contact is on multiple lists I'm sending to, will the email send multiple times?
If your email is set to go out to more than one list and you have contacts that may be on more than one of the selected lists, HubSpot will automatically de-duplicate based on the email address. Each recipient will only receive one copy of your email. You can read more about this here.
What is the difference between a smart list and a static list?
Smart lists are dynamic, meaning that they constantly update. Static lists do not update as new contacts meet the criteria. Read more about their differences here and why it might be better to use one list type over the other.
If I import a list two times will it create duplicate contacts?
HubSpot will deduplicate contacts based off of email address, so importing the same list twice will only result in one contact created per email address. Read more about this here.
I have more questions about lists...
That's okay. We have more answers. Check out the links below.