Free tools
Check email setup, write an agent prompt, or estimate sending costs for an agent that calls, texts, and emails. These tools are free and need no account.
DMARC Report Analyzer
Read DMARC aggregate XML reports in your browser. See sending sources, alignment, and failures, then export a CSV file. The report is not uploaded.
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AI Voice Agent Prompt Builder
Build instructions for a receptionist, appointment confirmation, or order follow-up call. Edit the script and export it. The tool does not call a model.
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AI Voice Agent Cost Calculator
Estimate what an AI phone agent costs per call, per minute, and per month. The estimate covers STT, LLM, TTS, and telephony, with prices from the Hail costs dataset.
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SMS Length & Segment Calculator
Count SMS characters and segments, and detect GSM-7 or UCS-2 encoding. See which characters cause UCS-2 encoding, and estimate the sending cost.
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Email Deliverability Checker
Check the SPF, DKIM, DMARC, and MX records of any domain. Each check returns pass, warn, or fail. A warn or fail result includes a fix.
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Place a call with Hail
Place a call from your own agent. Hail has no subscription. You pay for usage.