Are you looking for new business systems? maybe its an ERP package that takes care of your Accounts and sales, or maybe its CRM to store all your customer details and run marketing functions. Perhaps you need both, if you do then your in luck. Microsoft Business Central has all the functions you require.
Business Central is widely know for its ERP functions such as Financials, Sales, Purchasing, Inventory etc. however it also has lesser publicised CRM features. The good news is that they will be perfect for most SMB companies.
Business Central CRM functions can take care of all your customer and contact info and also has more advanced features such as Opportunity tracking, Campaigns and interaction logging.
Business Central also has integration into Microsoft Outlook, so it can even store the emails your contacts send you, and the emails you send them.