Dear yahoo,

you used to be great. I used to use you all the time, now you are a source of spam. I am working on removing thousands of spam posts on a wiki originating from your system.

I cannot even write a question to you on your own system because it says :

Screenshot-Yahoo Products | Yahoo Answers1

Here is the text I wrote :

How can I quickly determine if a given yahoo account is valid and not a spammer?

I am working on removing spam from a wiki, we have thousands of yahoo accounts that might be spam. I am trying to send them test mails but getting blocked by the mail system. Is there any api to quickly check if a given account is active and in good standing?

It really makes me frustrated that companies try so hard to block people from writing to them.