Using google, yahoo and AOL smtp and PHPMailer how many mails can be sent at a time?
I tried to send 200 mails at a time from google after 40 or 45 it is giving the following error.
SMTP Error: Data not accepted.
and then i tried to reload and give only 1 address and the same error i have got.
what is the problem?
You can't give a general answer to it. Big email providers such as Google have their own strategy to discover spammers. For example, I had no problem to send a single mail to 85 in CC, but sending 85 to a single recipient causes problems with my provider.
If you intend to send mass emails like a newsletter, I highly recommend using a professional service for it. Otherwise it is very likely that your email server gets black-listed or your sender email address marked as spam. Therefore, I can't recommend using typical newsletter plugins or modules for your favorite CMS if you got more than a couple of users registered.