First, I know that you guys are doing something totally different, than what I'm asking about, but nevertheless, this is the only place on the internet, where I can ask such questions. OK, I went through this forum's search and through another one(not mailer orientated) and still can't understand shit. Here's the deal; I buy media for various cpa offers and want to put a squeeze page before the offer and even make the optin page the last one, with no front end monetization. Then I want them on a predefined email sequence. When doing my reaseach, I ended up finding two routes: 1) Getting dedicated servers and finding IPs, buying full blown MTA and learning to mail, which seems to be a full time job, which I can't really afford, because media buys are a full time job too. So I left that idea and did not dig any further. 2) signing up with an ESP. Aweber, locks you out of your lists, if you get banned, mailchimp does not like affiliate offers, so i'm left with icontact, constant contact and getresponce. A few problems arrive when using these. First, they don't allow single optin, which is ridiculuos. All the people say that double optin will not cut out too much, but I don't believe that. These guys are in the IM guru bullshit niche and I'm not. Second, they have ridiculuos spam complaints limit. Now, I've stumbled upon sendgrid.com, which seems to be a completely different system, but I really fail to see how it works. It seems that it gives me a lot more control than ESPs and is not so complicated as an MTA. Can I add IPs that I have? Does it deliver well? Will they shut me down after 5 complains/1000? Am I mistaken about what it does? Basically, is it a good option for what i'm looking to do? Is there any other way to do it? Any other service? Or I just have to learn to mail myself or pay someone for drops(is that expensive?)?