Email marketing soft

For example, my friend’s name is John Darwin, and he made a personal email address : johnd@rwin.net

I appreciate you taking the time to answer my question.

I sent an email to my entire email address book. I got alot returned b/c they are not current or good email addresses anymore. I can not figure out how to delete the bad email addresses from my yahoo email address/contact book.

Is there a way to check and see if an email address is valid without actually sending them an email? I have had my yahoo email for a long time now, and I’m sure that some of my contacts emails are no longer valid. I **** sending an email then finding out two days later that the email is no longer valid. Does anyone know of a “check” I could run on my entire address book?

When I set up my category, I added the right contacts but it only included one email address per contact, despite the fact that several contacts have multiple email addresses that I want to send to.

Will I need to cut and paste email addresses in a contact list?

I need to send a bulk email to multiple recipients but I don’t want the other people to know who else got the email. Is there a way to do this?