> ## Documentation Index > Fetch the complete documentation index at: https://docs.callkaro.ai/llms.txt > Use this file to discover all available pages before exploring further. # 3. Post-Call Functions **Purpose:** take action after the call has been analysed. Key points: * They run after the call ends and is analysed, so they never interact with the customer. * They can decide when to run, based on post-call variables or call metadata. * They update your systems and records. Common uses: update CRM status, save call summaries, log objections, create follow-up tasks, notify sales teams, send post-call WhatsApp messages, push analytics, and run any in-call functions that were missed or failed. **Example:** updateLeadDisposition(status="Interested") updates the CRM after the call. ## Basic vs Advanced Post-Call A Basic Post-Call function runs after the system analyses the conversation and generates the post-call variables. For example: * **Objective Achieved:** if the user agrees to the call's purpose, a confirmation message is sent over WhatsApp. * **Uncertain Response:** if the user is undecided or needs more time, a follow-up call is scheduled. * **Deal Not Closed:** if the objective is not met, a feedback request message is sent to the customer. An Advanced Post-Call function overcomes the limits of basic post-call actions, giving almost unlimited flexibility to build any post-call workflow from scratch. Here you can write custom code to evaluate call outcomes, analyse the conversation data, and trigger tailored follow-up actions — like sending personalised messages, scheduling callbacks, or updating CRM records — based on specific conditions. The whole logic is fully customisable, giving you complete control over inputs, processing rules, and output formatting. ## Audit post-call actions Check Function Call Issues and Postcall Variable Issues when a follow-up action returns an unexpected result.