Don't use GMail. External mail services is cheap. And frankly, if I got email from a company that was sent from a gmail account, I'd ignore it.
>Hi,
>
>I have an application for a client that sends out notification emails on a daily basis, sometimes amounting to over 1,000 emails. Every now and then they get an error:
>
>"System.Net.Mail.SmtpException: Mailbox unavailable. The server response was: 5.4.5 Daily sending quota exceeded"
>
>They have 8 gmail addresses that I loop through in order to send the emails.
>
>The code I use to send the emails is like this:
>
>
SmtpClient client = new SmtpClient(smtpClient, smtpPortInt);
>// then build up the email details and
>client.Send(msg);
>
>I have been unable to determine what exactly are the limits that gmail puts on sending email like this.
>
>One page says 500 per 24 hours if using the web interface, 100 for IMAP/POP.
>
>Other places I have seen 200 per hour.
>
>Does anyone have the real figures and any suggestions how to get around this problem?
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer