Email services help needed

[BenCurry]

Hi, 

I'm currently using Mailchimp for my email service (not the forums automated emails)

New users are added to a welcome email automation series.  

As my list grows this is becoming more and more expensive (16000 members) so I am looking to change this to another service.  

I need to be able to add new registrations to the mailing list and get them on the intro sequence. 

What other options are out there that might be more cost effective and have IPS integration? 

thanks, 

[NZyan]

I'd interested in this one too.

Onboard sequences are a great tool to welcome new users and get them active!