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hail.so

Give apps and AI agents a phone number and email inbox. Make or take calls, send or answer texts and email. Open-source or cloud priced on usage.

Product

ChannelsVoice APISMS APIEmail APIIntegrationsComparePricingNumber pricesTwilio number costAI model pricing

Setup guides

Setup guideFront deskAppointmentsCustomer supportSales inquiriesDelivery updatesAfter hoursInbox

Resources

DocsBlogMCPBest AI receptionistsBest virtual phone assistantsBest AI secretary toolsBest AI telephone platformsLead outreach with an agent10DLC timeline guideDomain warmup guideAgent skill file

Free tools

DMARC Report AnalyzerAI Voice Agent Prompt BuilderAI Voice Agent Cost CalculatorAnswering Service Cost CalculatorSMS Length & Segment CalculatorEmail Deliverability CheckerAll tools

Company

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