Google Apps used to be free(freemium), for those that can't remember.
Because it was free, for years I setup numerous clients' domain emails on Google Apps for all the reasons we all like Google Apps (spam filtering, groups, storage, forwarding, etc). Many of them were setup to forward a copy of emails into those clients' alternative/personal email addresses.
Since many of these users NEVER logged into Google Apps, Google called these accounts "inactive" and about month ago deleted every single one of them.
I understand Google no longer offers free accounts, but some of these clients had no idea their accounts was being shut down and obviously just paid no attention (or missed) the emails Google sent out.
Ugh, frustrating to say the least. I take blame though. I even missed Google's warning messages on my own accounts and one of my Google accounts was wiped too...