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ListMessenger exceeds expectations as a well designed, easy to use, lightweight mailing list management solution for your website. ListMessenger is feature packed but because of its intuitive design remains simple to use and easy to maintain.
ListMessenger 2.2.1 Now Available Follow @ListMessenger on Twitter

Can I assign multiple administrators to ListMessenger?

Currently this is not possible through ListMessenger, as there is only one assignable administrator username and password. Multiple administrator support is in the pipes for a future version of ListMessenger. Please stay tuned for details.