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);
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?