Assuming you've deleted the mailing list contact, and not the contacts from the directory, I think you're in luck! You can create a new mailing list by going to the top of the page while in the Mailing List tab, and select "Create New Mailing List" from the drop down. You can then create a mailing list with the same criteria pulling the participants from your directory.

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Hi please help.I accidently deleted the contact list which I had sent survey to from the directory. Please let me know a way out.

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