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contractor", "how to figure out if a job is profitable", "contractor markup vs margin", "what is my real cost per hour" ], "related_guide": "https://corbelworks.pages.dev/tools/contractor-job-pricing/", "related_waste_guide": "https://corbelworks.pages.dev/tools/contractor-waste-removal/", "related_hvac_guide": "https://corbelworks.pages.dev/tools/contractor-hvac-pricing/", "related_plumbing_guide": "https://corbelworks.pages.dev/tools/contractor-plumbing-pricing/", "input": "labor, burden, utilization, overhead, margin, and job-cost figures", "output": "break-even rate, target rate, and quote profitability", "network_after_load": false, "offline_capable": true, "certification": false, "related_electrical_guide": "https://corbelworks.pages.dev/tools/contractor-electrical-pricing/" }, { "id": "change-order-cost-calculator", "name": "Scope-Creep & Change Order Cost Calculator", "url": "https://corbelworks.pages.dev/tools/change-order-cost-calculator/", "description": "Browser-local 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"https://corbelworks.pages.dev/tools/contractor-waste-removal/", "related_hvac_guide": "https://corbelworks.pages.dev/tools/contractor-hvac-pricing/", "related_plumbing_guide": "https://corbelworks.pages.dev/tools/contractor-plumbing-pricing/", "input": "direct, admin, delay, and overhead cost figures", "output": "true change-order cost and price", "network_after_load": false, "offline_capable": true, "certification": false, "related_electrical_guide": "https://corbelworks.pages.dev/tools/contractor-electrical-pricing/" }, { "id": "service-call-minimum", "name": "Service Call Minimum & Trip Charge Calculator", "url": "https://corbelworks.pages.dev/tools/service-call-minimum/", "description": "Browser-local calculator that turns burdened crew rate, drive time, dispatch overhead, truck cost, and target net margin into a true minimum service-call ticket and trip charge for HVAC, plumbing, electrical, and field-service shops.", "categories": [ "contractor", "service-call", "trip-charge", 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It is a static-input check, not a live DNS, reputation, or inbox-placement test.", "categories": [ "email", "deliverability", "outreach", "operators" ], "audience": [ "operators", "small-business", "contractors", "sales" ], "discovery_intents": [ "cold email deliverability check", "SPF DKIM DMARC checker", "email spam trigger checker", "cold email preflight", "how to check if my email will land in spam", "SPF DKIM DMARC validation", "cold email best practices checker", "email authentication record checker", "will my cold email get flagged as spam", "how to verify email deliverability before sending" ], "input": "pasted SPF, DKIM, DMARC, subject, and message body", "output": "authentication and copy lint", "network_after_load": false, "offline_capable": true, "limitations": "not a live DNS, reputation, or inbox-placement test", "certification": false } ] }