QuickBooks is a robust accounting tool widely used by small to medium-sized businesses to manage their financial transactions. What it isn't is a CRM. Yes, it stores customer contact details and can schedule some tasks, but it should never be used for customer relationship management (CRM). It's understandable small businesses would look to double-purpose their accounting program to save on CRM costs, but there are several important reasons why these savings could seriously limit your business:

1. Limited CRM Features: QuickBooks is primarily designed for accounting and lacks the comprehensive features needed for effective CRM. Traditional CRM systems offer robust functionalities such as lead and opportunity management, sales automation, customization, and customer service tools, which QuickBooks does not provide. It also lacks basic calendar functionality, task lists, features for tracking customer interactions, and management of basic marketing efforts.
2. Security Concerns: Using QuickBooks as a CRM can pose security risks. Since QuickBooks handles sensitive financial information, granting access to employees who only need customer data can compromise the security of your financial records. On the other hand, a CRM system can provide controlled access to customer information without exposing financial data.
3. Inefficient Lead Management: QuickBooks does not offer effective lead management features. A CRM system allows businesses to generate, track, and nurture leads through various lead sources, including web forms, calendar links, and e-marketing, ensuring that no potential customer falls through the cracks. QuickBooks lacks these capabilities because it isn't designed to track pre-sales activity, only post-sales. 
4. Limited Analytics and Reporting: While QuickBooks excels in financial reporting, it falls short in providing the detailed analytics and reporting needed for CRM purposes. A CRM system can offer insights into customer behavior, sales performance, projected income, and marketing effectiveness, helping businesses make informed decisions and improve their strategies. QuickBooks reports on sales results and account balances only.
5. Integration Challenges: Although QuickBooks can integrate with some CRM systems, using it as a standalone CRM can create integration challenges. A dedicated CRM system is designed to seamlessly integrate with various business tools like web forms, surveys, event management, e-marketing, calendar links, project management, real-time chat services, and more.
6. Mobility:  While many accounting programs offer browser-based access, few provide responsive mobile access to the data for phones or tablets. When access is limited, so is its use.

In conclusion, while QuickBooks is an excellent tool for managing financial transactions, it is unsuitable to use as a standalone CRM. And while we strongly recommend integrating accounting data into a CRM (like Qsales does with Act!), businesses looking to manage customer relationships effectively should invest in a dedicated CRM system with the necessary features and capabilities to drive sales, improve customer service, and enhance overall business performance.