We have been an iPostal center now for a year. We found it to be great simple add on profit center. One issue that I see is that the customer base, i. E. mailbox customers, are frequently not business oriented. This is reflected in some of the negative reviews that I see on here.
The site works great for both us (the mail center) and the customer (box holder). Both sides have a great simple browser based interface with clear description of costs and procedures. Customers are provided mailboxes at 70% of the cost of an actual box. Customers receive daily scans of their mail and are offered services such as scanning and/or forwarding as a part of their base box cost. The curious thing is I see reviews where the reviewer is complaining about the cost of forwarding and scanning. Those add on services require staff and mailing costs. Plus the costs are detailed on their main browser window.