I have a web application that provides an email box for each of our customers. Once we acquire a new customer, we automatically create a mailbox for him. Currently we use Rackspace for that, and it has served us well. I like their REST API.
However, we have to stop using Rackspace since it stores the emails in the US. We have legal constraints that force us to store the emails within the EU.
What alternative for Rackspace would you suggest? The requirements are: a good API and location within EU.
Amazon SES. Has servers located in the EU.
You can also look here