Trade Leads board includes instant Buy, Sell, Cooperation, and Agent Offers. Its daily alerts are the gathering of same type of offers that deliver directly to subscribers' email account.
Frequency: Daily. (If there is any new message under the product category that subscribers selected.)

How to subscribe Newsletters?
If you are a member of ttnet.net, you can sign in to click the categories to subscribe.
And then click the button of "Confirm" to finish the subscription.