The steps depend on whether you use Gmail or Outlook / Microsoft 365. Pick your inbox below, everything else takes care of itself.
Add BillSensor to Chrome, free →Gmail detection has no connection step. There's nothing to sign into and nothing to approve, BillSensor starts working the moment you open a billing email.
No account, no sign-up screen. It's ready the second the install finishes.
Nothing runs in the background. BillSensor only activates when you're actually looking at an email.
BillSensor checks the sender and subject against a list of 61 known SaaS tools and saves the subscription automatically, tool name, amount, and next charge date.
Without an account you still get Chrome notifications. With a free account you also get email alerts on your 5 lowest-cost subscriptions.
A Chrome notification fires automatically. No further setup needed.
Use "+ Add Subscription Manually" in the popup to add any subscription right away, up to 5 on the free plan.
Outlook works differently from Gmail. Instead of reading emails as you open them, BillSensor connects once through a read-only Microsoft Graph API scope and scans your last 12 months of billing history in one pass.
Same first step as Gmail, no account needed yet.
This starts Microsoft's own consent flow, not BillSensor's.
The scope requested is Mail.Read only, the same standard consent screen you'd see connecting any calendar tool. BillSensor cannot send, delete, or modify anything with this access.
Every billing email from the past year gets detected in one pass, no need to open each one individually the way Gmail requires.
Outlook alerts are sent by email only, there's no Chrome notification trigger for Outlook the way there is for Gmail. A free account is required to receive them.
Free users can click "Scan Now" in the popup whenever they want an update. Pro and Business accounts re-scan automatically every day in the background.
Scanning 12 months of email history isn't instant. Give it a minute or two after connecting before checking your subscriptions list.
Read how BillSensor reads Gmail without OAuth for the full explanation.
Install BillSensor and follow the steps above, whichever inbox you use, you'll be protected in under two minutes.
Add BillSensor to Chrome, free →7-day free trial on Pro and Business. 14-day money-back guarantee.
No, not to start. Installing and detecting subscriptions works immediately with no account. But Chrome notifications only fire if your browser is open at that moment; if your laptop is off or Chrome isn't running when the 7-day alert would trigger, you miss it. A free account gets you email alerts too, which reach you regardless of whether your browser is open. We recommend it for anything you'd actually be upset to miss.
Yes. Gmail detection works across multiple Google accounts open in the same browser (u/0, u/1, u/2), no extra setup required for each one.
Yes. They run independently, connecting Outlook doesn't affect Gmail detection, and vice versa. Many freelancers and small teams end up using both if they manage more than one inbox.
Any subscriptions stored locally in your browser are removed with the extension. If you had a Pro or Business account, your synced data stays in your account and picks back up if you reinstall and log in again.
No. Upgrading doesn't break your existing connection; it just removes the 5-subscription alert cap and switches you from manual re-scan to automatic daily re-scan.