Let you control the maximum allowed shipping/billing addresses for Customer Address books. You can set Groups with different Limits (ex. Drophipping Customers "0" for unlimited addresses and default Customers "1" for only 1 Address)
1.) Open Extensions => Extension installer and upload the addressbooklimit.ocmod.zip
2.) Go to Extensions => Modifications and refresh
3.) Go to Customers => Customer Groups - and set individual Addresslimits for each Group (default is 0 for unlimited)
Adress book Limiter comes with german, spanish and english languagefiles.
Add your own language - copy the catalog/language/en-gb/account/addressbooklimit.php to your language directory and translate it.