Only Indian Providers need to bid.
It is simple CAPTCHA entry work on our websites.
The ONLY Condition is that you MUST have list of e-mail IDs.
We dont' need ur e-mail id list.
You have to enter e-mails and enter Captcha value and click ENTER.
Take screen shot for proof.
in PMB provide follwoings
1) How many e-mail IDs do you have.
2) How much for 1000 CAPTCHA.
The e-mail ids shall be real ones and not ghost e-mail ids.
It is kind of marketing work.