Blocks are reusable capabilities that handle individual steps in a flow, such as speaking, collecting information, making a decision, sending a request, or processing data. Use this page to compare blocks and see where each can run.
Some blocks also share settings for caller feedback, failure routes, and reporting. See Common Block Settings to configure those options.
The Available in column shows where a block can run. All stages means pre-call, live call, and post-call. The block picker filters by the flow direction and stage where you open it.
Conversation
Flow control and routing
Use Talk exit conditions for conversational outcomes and Filter for data-based routing. Transfer Flow stays within the agent, while Transfer Call sends the call to a phone destination.
Calls and messaging
Use Send SMS or Send Email when you control the message content. Use Email & SMS Notification to deliver the conversation summary automatically after the call.
Data and automation
Integrations
Provider-connected blocks and branded webhook automations are documented under Integrations. Use that section to compare their actions and configure accounts, webhooks, inputs, variables, and tests.
The picker shows where a block can run, but it does not confirm that the block is fully configured. Complete its required settings and resolve any errors in the Flow Checklist before publishing. 
