Thank you for reaching out! We do have a partnership program that you can take advantage of for your brokerage! You're able to have a main portal that you can log into, and then all 10 sub-accounts would go underneath the partnership. If you go this route, all of the sub accounts can pay for their own Constant Contact account, or you can activate Single Billing which would allow you to pay one bill for all of the accounts. It's free to setup the partnership and the main (corporate if you will) account would be free for up to 5,000 contacts and discounted beyond that.
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