"Account usage should be in accordance with our Privacy Policy and Anti-Spam Policy."
This is of course strictly enforced and thoroughly monitored. Letting people use our system to spam would definitely damage our reputation and negatively affect our (paying) customers.
Sending emails is not rocket science. But it begins to be more complicated when you want to serious about it:
First, you’ll want to automate bounce processing. There is typically a 2.5% churn rate per month on average on a list. You'll start to be blocked at 10% at many ISP.
Second, you’ll want to be authenticated if you don't want to be tagged as a spam. Think of configuring SPF, SenderID, DomainKey and DKIM.
You'll also want to remove recipients that will tag your email as spam, and that will happen, no matter what. For that you'll need to have your feedback loops configured at major ISP, and unsubscribe the plaintiffs as you get the reports.
And we’re still not talking about calculating open-rates, click-rates and reporting them in a way that is efficient and gives you insights about your marketing operations.
It all depends on how your value your time. We think you have better to do than tweak yourself an email marketing solution.
"First, you’ll want to automate bounce processing."
Good reason, and something I've never had to deal with. Every mass-mailing I've ever done has been a one-off.
"Think of configuring SPF, SenderID, DomainKey and DKIM."
You have to have (most of) this stuff, anyway, if you send ANY amount of email. It's not limited to mass senders--if you're sending mail as part of your business, you have to deal with spam prevention schemes of many types. SPF being the most widely implemented at this time.
I guess it comes down to regular mass emailing, which is something I've never done. So, I can see value in handling those problems.
Consider question answered, and point conceded. (I don't foresee needing this kind of service, since we don't do mass mailings on any regular basis, but I can imagine folks who would.)
This is of course strictly enforced and thoroughly monitored. Letting people use our system to spam would definitely damage our reputation and negatively affect our (paying) customers.