Telemarketing Leads

Although HubSpot used to have less customization than Salesforce, HubSpot has been steadily expanding its features and capabilities. HubSpot now provides many features that some users may have missed in the past (such as coding). Most of these features are available in the Operations hub :

Data Sync (also available in Free CRM) – automatic two-way data synchronization between HubSpot and third-party applications
Programmable Automation – creating your own programmable automation using JavaScript
Snowflake data share – fast, secure, and easy integration between HubSpot and belarus phone number data Snowflake services
You can also customize HubSpot with: 

custom workflows 
custom objects (only for Marketing Hub Enterprise Sales Hub Enterprise versions) 
custom properties
custom reports (only for Marketing Hub Enterprise Sales Hub Enterprise versions) 
Salesforce
Salesforce is known for its wide range of features and offers many tools to customize your CRM . Keep in mind that extensive extension features are available from the Professional /Enterprise version. You can customize:

User interface (branding, page layout)
Features (alerts, objects, workflows, dashboards, reports…) – customizing features is the most common type of modification and will allow you to tailor CRM to your needs 
Integration between Salesforce and third-party systems