Send Bulk Emails that will goto Inbox

Its also depends of the domain. I am using a mail service and from one domain the mail gets to inbox and from the other it go to spam.

Because I am using the same service an same settings and everything else for the service, it leaves me to believe that the domain name and the IP of the domain name play important role in filtering of the big mail services.

I could advise you , but this works just with a true emails list. I mean if you receive too many "spam" notifications afteer sending emails, you will not be able to use it anymore (this webtool). Anyway you look for something free or paid?