Your question was: What are the best GoDaddy deal codes now?.
In a nutshell though listen to what JellyFish said he's spot on..
In regards to the mailer..
Some of the things I've seen the DA guy talk about I haven't seen out side of my personal mailer(automatic learning). If you have the money and don't mind running windows check out their platform.
Keith is a good guy and you can learn a lot from him as well. RoboMail is a solid..
I've heard good things from experienced mailers that use VoloMP, but they don't have to use their support which I hear isn't very good (I have no personal experience with this I'm just stating what I've heard which might be wrong)..
If you don't mind getting your hands dirty and you have a tech background you can actually do wonders with postfix and make it preform well..
<== front ends ==>.
You might also want to check out adlinkr. I had them demo it for me before I recommended it to someone needing that type of front end and it is very nice..
<== DNS SERVERS =>.
I personally use bind. I like it and it works fine. I'm not sure what other people use...
Sorry, it seems my post wasn't clear. I wasn't looking for mailer recommendations or such, just wondering what additional services people consider invaluable!.
We have our own inhouse platform..
Sorry for the confusion..
Are you looking to offer your inhouse system to others? What have you got? Details please...
Shameless plug here... but Adlinkr is definitely something that will increase your productivity...