BillSensor — SaaS Billing Monitor

Never miss a SaaS renewal. Monitors Outlook & Gmail for billing emails. Alerts you 7 days before charges hit. 63+ 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 (Gmail) Detects price increases and flags charges 20%+ higher than expected (Pro & Business) Post-cancellation monitoring, alerts you if a tool charges you after you've already cancelled (Pro & Business) 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 Detects amounts in USD, EUR, GBP, INR, and other major currencies Lets you manually add subscriptions that aren't auto-detected 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 Up to 5 manually added subscriptions 7-day renewal alerts via Chrome notification (Gmail) Dark pattern scores and cancel links for your 3 lowest-cost subscriptions Outlook / Microsoft 365 connected scan (12-month history) Email renewal alerts on your 5 lowest-cost subscriptions, unlimited alerts on those 5, free account required to receive them Pro — $9/month Everything in Free Unlimited subscriptions with full dark pattern scores and cancel links Unlimited Outlook / Microsoft 365 email alerts, no 5-subscription cap Outlook daily auto re-scan, new emails checked automatically every day Price increase and anomaly detection with email alerts Post-cancellation monitoring with email alerts Full billing history Cancellation records, downloadable proof with timestamp Cloud sync and multi-device support Business — $29/month Everything in Pro, per member Up to 10 seats (admin included) Admin dashboard with every member's subscriptions, spend, and next renewal Works across members on Gmail and Outlook alike Priority support 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): 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 Free users can re-scan manually anytime, Pro and Business scan daily in the background Alerts arrive by email since there's no Chrome notification trigger for Outlook 📋 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 (Pro & Business) Anomaly alert, when a charge is 20%+ higher than expected (Pro & Business) Cancellation verification, 7-day warning before a cancelled subscription's expected renewal date (Pro & Business) Post-cancellation charge alert, immediate alert if charged after cancellation (Pro & Business) 🔜 COMING SOON Full Gmail inbox scan, automatic bulk detection (Pro) Payments processed by Paddle. BillSensor is a product of Pratyasha Fashion Galaxy OPC Private Limited, registered in India.