Mechanical Turk: how to send email to workers who have performed your HITs
I have posted two surveys on Mechanical Turk and I didn't ask for any contact information from my workers. That may not even be allowed: anyway it's too late now.
Now I want to send an email or other kind of message to all those who completed my tasks
On this page: http://www.itworld.com/internet/76659/experimenting-mechanical-turk-5-how-tos it says you can send an email by clicking on the worker ID in the list of completed tasks. But when I look at my MTurk account, this is not so.
Under Manage > Workers, I can click on a worker ID and I get some details on that worker, as well as the option to bonus them or block them. But not to send them any message.
Has this function been removed? Do I need to learn to use the awful command-line tool?