Well, this is a hot topic for me this week. I have more questions than answers.
Most of the time I do this for clients. I charge $500 per mail campaign. I think this is dirt cheap.
I have 8k addresses in IPS database and 6.5k in MailChimp. These are the same users but the Mailchimp data has bounces and unsubs weeded out.
I did a mail push this week straight from the default IPS bulk mail tool. The problem is I have no idea of the open rate or delivery rate of the emails. It is a black hole. Hell, it might have been great. I did get a result for the campaign I was promoting but maybe all that traffic was organic. The report says 600 clicks. Is that opens or clicks on the link in the mail?
I tried to config SendGrid. Could not get it to work. The support guys at IPS tried to help but suspect I did something wrong when I autogenerated the DNS settings I sent in. As is my usual issue with IPS the one thing that is lacking is good documentation.