Pricing that grows only when people read.
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Frequently Asked Questions
A Signal shows how many people opened an email before the current reader.
It answers one simple question: “How many people got here before me?”
An open is counted when a recipient’s email client loads the Signal while opening the email.
Different email apps behave differently, so Signals are best-effort indicators, not perfect measurements.
No.
The Signal is generated at the moment the email is opened and does not update on future opens.
Each reader sees their own position based on previous opens.
Signals are generated using a lightweight image included in the email.
We do not read email content, scan inboxes, or track users across the web.
No.
Signals only measure open order, not behavior.
We don’t track clicks, location, browsing activity, or personal data beyond what’s required to generate the Signal.
Yes — intentionally.
The Signal is part of the email message and is designed to be transparent, not hidden.
Yes.
nthreader works with any email platform that supports images — including newsletters, product launches, and transactional emails.
No integrations required.
No.
We never store email content or access mailing lists.
Signals only process what’s necessary to generate open position data.