Never worry about sending to unsubscribed users—compliance on autopilot.
Manually tracking and respecting opt-out requests is risky and time-consuming. NotifiedBy automates everything: if a user unsubscribes, we'll suppress them instantly and block any future sends—no coding required.
Auto-detect and process opt-outs.
Users who opt out via any unsubscribe link are flagged—immediately, no chance of accidental emails.
Absolute compliance, minimal effort.
We ensure you stay compliant with email and spam laws (like CAN-SPAM/GDPR)—out of the box.
No more accidental sends.
You can't send to unsubscribed addresses—even if you try. Every send is checked in real time.
Webhook notifications available.
Instantly sync opt-outs with your own database for airtight records and custom handling.
Zero-code setup—users click unsubscribe, we take care of the rest automatically.
How it works
A user clicks an unsubscribe/opt-out link in any email.
NotifiedBy immediately records the request and puts their address on your suppression list.
All future sends to that address are blocked. No manual intervention, ever.
(Optional) We fire your webhook. Get real-time POST notifications to update your own application database or CRM.
# If an unsubscribed user is targeted by code like:
notifiedby.send_email(
to="unsubscribed@domain.com",
subject="Update",
body="You'll never see this!"
)
# Result: Request is automatically blocked
{ "id": "BLOCKED", "error": "Recipient has unsubscribed" }