iEmailer is a handy free utility to send mass messages to a mailing list that does not require consulting your eMail service provider: your computer will be your own mail server.
This is so because iEmailer checks for itself the truthfulness or validity of all the email addresses in the list, consulting itself to the most common servers: hotmail.com, yahoo.com, msn.com, alexa.com, use.com, usa.net, etc. Choose the server you want, and iEmailer will verify all the addresses in the mailing list one by one.
Then, the IEmailer program adds all addresses that have been valid to an already definitive list, which will be sent to the corresponding emails.
You can free download iEmailer 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.