How many emails can I send in a single shot using VB 2005?

[abhiramvikrant]

Hi,
I'm doing a project based on MS Excel 2003 and VSTO 2005. A specific task in my project includes sending bulk email (not spam). I do know how to send email using VB 2005 and I got a trick that by concatenating email IDs to BCC( for ex: -
BCC = bcc1@bcc.com;bcc2@bcc.com;bcc3@bcc.com; ....' n' ), I guess I can send bulk email at a single shot ( Am I correct? I didn't research it yet), no matter how much email IDs are there. Now my question are as follows.
1. Am I correct in my approach?
2. Everything has got limitations. How much email IDs can I concatenate and send it through BCC in a single shot?
3. If my approach is wrong , Should I've to send each and every email separately (I mean call a loop for 'n' number of times for sending 'n" number of emails?

Hope I'll get some advice from the forum. Thanx in advance

 

[Administrator]

It's not entirely an issue on how many you can send but how many you can send without getting blocked. I know the firewall I use does a check on the number of recipients and uses this as a measure of spam detection. Keep your numbers per e-mail minimal, say 20 max, then just send multiple e-mail transmissions with different blocks of recips.