I noticed that no one responds to an email, even though they are listed as a Zoosk member. I complained to support and they blew a line of smoke evading the issue. I sent 31 test e-mails requesting that the person simply acknowledged that they received the e-mail. Not a single person responded and Zoosk customer support ignored the problem indicating by that action this is probably a company policy with the goal to sell e-mail confirmations before allowing delivery. The last complaint I sent was totally ignored. I would think that at least one person would respond since the message indicated a test.
I tried a similar approach on Christian Mingle and received a response after sending only three e-mails.
I don't think any e-mails that I sent through Zoosk have been delivered.
I suggest that a government authority set up male and female accounts on Zoosk, take out subscriptions, and then try sending e-mails. I think there is a high probability they can prove fraud. Maybe you should try this test yourself and publicly post the results.
Bottom Line: No, I would not recommend this to a friend