The customer support team at ASI has always been very helpful when I have had questions or issues with my account.
They are prompt about responding back as well! It's hard for me to find anything that I dislike about this forwarding provider/company. If you're looking for an affordable way of getting your mail forwarded without having it hold up your mailbox waiting period then forward@asi-forwarders.com should be right near the top of the list. We use them primarily so we can get bills sent directly to us rather than going through third party companies like other providers require (which often times make billing difficult).