>>I send emails using direct Winsock calls from VFP
>>( http://fox.wikis.com/wc.dll?Wiki~SendSmtpEmail )
>>
>>It takes more than 8 hours to send 500 emails (!).
>>
>>Using blat.dll to send emails to the same address takes only 30 minutes.
>>All email addresses are valid. Both blat and this code make separate logon
>>to mail server for each message. Any idea what is wrong ?
>
>Did you use the DLL or Winsock with SendSmtpemail?

I use pure VFP code which calls Winsock directly.

>Are you reinstanciating the object for each send or are you reusing?

There is no object. I call the send routine to send each mail.

>Is it okay to send 500 emails in an hour?

Yes.

>What is BLAT - does BLAT use the client's SMTP server name - or does it call web service relay? If it's calling a third party relay you may want to know what is being done with those email addresses?;-)

BLAT is a open source C DLL file which calls winsocket directly like my fox code.