BillSensor — SaaS Billing Monitor

Never miss a SaaS renewal. Monitors Outlook & Gmail for billing emails. Alerts you 7 days before charges hit. 61+ tools supported.

Never get surprised by an unexpected SaaS renewal charge again. BillSensor monitors your Gmail and Outlook inbox for billing emails and alerts you 7 days before renewal charges hit — so you stay in control of every subscription you pay for. 🔍 WHAT IT DOES Detects SaaS billing emails in Gmail as you browse — no setup, no login, no OAuth required Supports multiple Gmail accounts simultaneously (u/0, u/1, u/2) Connects to Outlook / Microsoft 365 via secure read-only OAuth to scan your inbox history automatically Monitors 61+ popular SaaS tools known for surprise billing and dark patterns Alerts you 7 days before renewal charges via Chrome notification Detects price increases — alerts you when a tool charges more than last time Flags suspicious charge spikes — warns you when a charge is 20%+ higher than expected Post-cancellation monitoring — alerts you if a tool charges you after you've already cancelled Shows a dark pattern score for each tool — so you know which companies make it hard to cancel or get a refund Provides a direct cancel link for every detected subscription Lets you manually add subscriptions that aren't auto-detected (up to 5 on the free plan) Works on Chrome, Edge, Brave, Opera, and all Chromium-based browsers 🔒 PRIVACY Gmail detection happens entirely in your browser — email content is never sent to our servers Outlook scanning is processed securely on our servers — email body content is never stored, only subscription name, amount, and renewal date Strictly read-only — BillSensor cannot send, delete, or modify any emails No Gmail account connection required 💰 PRICING Free — No credit card required Unlimited passive subscription detection in Gmail Outlook / Microsoft 365 connected scan (alerts on first 5 detected subscriptions) Up to 5 manually added subscriptions 7-day renewal alerts via Chrome notification Price increase and anomaly detection Post-cancellation monitoring Dark pattern scores and cancel links Pro — $9/month Everything in Free Unlimited Outlook / Microsoft 365 alerts — no 5-subscription cap Outlook daily auto re-scan — new emails scanned automatically every day Email renewal alerts (server-side — alerts arrive even when Gmail isn't open) Email alerts for price increases and post-cancellation charges Full billing history Cancellation records — downloadable PDF proof with timestamp Cloud sync and multi-device support Priority support Team — $29/month Everything in Pro Up to 10 team members Shared subscription dashboard All paid plans include a 7-day free trial and a 14-day unconditional money-back guarantee. Cancel anytime in one click. 🎯 BUILT FOR Freelancers, solopreneurs, small businesses, and digital agencies who pay for multiple SaaS tools and want to stop being overcharged, auto-renewed, or silently upgraded without consent. ⚠️ WHY THIS MATTERS SaaS companies have turned dark billing into a revenue strategy: Charges that continue after cancellation Silent plan upgrades when you add a team member Renewal emails buried in promotional folders Cancellation flows with 8 steps and a hold time Annual plans auto-renewed without a reminder Prices quietly raised without notification BillSensor monitors your Gmail and Outlook inbox and gives you advance warning before you're charged — and alerts you when something doesn't look right. 🛠️ HOW IT WORKS Gmail (no connection required): Install BillSensor — works immediately, no sign-up needed Open Gmail and browse your emails as normal When you open a billing email, BillSensor detects it automatically The subscription is added with the tool name, amount, and next charge date 7 days before renewal, you receive a Chrome notification Outlook / Microsoft 365 (connected scan — Pro): Open BillSensor → click Connect Outlook Approve read-only access — BillSensor scans your last 12 months of emails All billing subscriptions are detected and added automatically New emails scanned daily — no manual re-scan needed Same 7-day renewal alerts apply, plus email alerts for price changes and post-cancellation charges 📋 SUPPORTED TOOLS 61 SaaS tools currently monitored across categories including email marketing, project management, design, CRM, developer tools, video conferencing, analytics, and accounting. See the full list at billsensor.com/tools 🔔 ALERT TYPES Renewal alert — 7 days before a subscription renews Price increase alert — when a tool charges more than last time Anomaly alert — when a charge is 20%+ higher than expected Cancellation verification — 7-day warning before a cancelled subscription's expected renewal date Post-cancellation charge alert — immediate alert if charged after cancellation 🔜 COMING SOON Full Gmail inbox scan — automatic bulk detection (Pro) Multiple Gmail account support (Pro) Payments processed by Paddle. BillSensor is a product of Pratyasha Fashion Galaxy OPC Private Limited, registered in India.