They actually are not using those email addresses for other accounts, thus the mystery. And now they aren't in the system at all and we're still getting this message.
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Hello, we have tried repeatedly to add several account managers and gotten a message that we cannot because "that email address is already in use by another user". I deleted two of them from Constant Contact and still got the same message. I need to resolve this issue and immediately add these two people as account managers: Thanks for your quick assistance.
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