AbleCommerce Shopping Cart Software

I am evaluating AC7 and I had a couple questions that I am trying to find answers for and was hoping someone might know.

Can a 3rd party email list manager, such as Constant Contact, be integrated into AC7? Also, on the admin side, when entering a new order, is it possible to split the order into multiple shipments so the shipping calculates correctly (for each package)?

Multiple shipments in admin- are they both going to the same address, but different boxes? You might be able to do that by using the ship to different addresses, but put the same address in for both. I'm not sure.

At this point it would be nice to have multiple shipments to different addresses. But, we do have other instances where a person places an order to have multiple shipments to the same address, but not all at the same time, i.g. one in July, one if August.