Why doesn't my Listmonk subscriber count match my lists?

The Listmonk help pages give 5 common reasons. The first to rule out: On a double opt-in list, new subscribers have to click the link in the confirmation email first. Until they do, they get no campaigns.

Reach · Are people seeing me?

Is it broken, or just quiet?

A number can fall because fewer people came, or because something stopped counting them. Below are the causes the Listmonk help pages give, and how to check each one yourself.

What causes it?

  1. On a double opt-in list, new subscribers have to click the link in the confirmation email first. Until they do, they get no campaigns.

    In the Listmonk help: Subscribers added to double opt-in lists have to explicitly accept the subscription by clicking on the confirmation e-mail they receive. Concepts, read 2026-11-12.

  2. An unconfirmed subscriber was added to the list without confirming, so they show on the list but are not a confirmed subscriber.

    In the Listmonk help: The subscriber was added to the list directly without their explicit confirmation. Concepts, read 2026-11-12.

  3. People who unsubscribe still appear against the list with an unsubscribed status, but they no longer get its campaigns.

    In the Listmonk help: The subscriber is unsubscribed from the list and will not receive any campaign messages sent to the list. Concepts, read 2026-11-12.

  4. Depending on your settings, people whose emails keep bouncing can be blocklisted or deleted automatically, which can lower your count.

    In the Listmonk help: Based on settings, subscribers returning bounced e-mails can either be blocklisted or deleted automatically. Concepts, read 2026-11-12.

  5. The same person can be on several lists, so adding up list sizes gives more than your number of subscribers.

    In the Listmonk help: A subscriber can be added to any number of lists. Concepts, read 2026-11-12.

How do I check it myself?

  1. On opt-in lists, compare the confirmed subscribers with the total. Only the confirmed ones get your campaigns.

    In the Listmonk help: Only confirmed subscribers in opt-in lists will receive campaign messages send to the list. Concepts, read 2026-11-12.

  2. Look for subscribers who are on no list at all. They count as subscribers but belong to none of your lists.

    In the Listmonk help: Subscribers who are not a part of any lists are considered orphan records. Concepts, read 2026-11-12.

  3. If subscribers are added by another system or script, check whether it marks them confirmed. If it does, they skip the confirmation email.

    In the Listmonk help: If true, subscriptions are marked as confirmed and no opt-in emails are sent for double opt-in lists. API / Subscribers, read 2026-11-12.

How would I know the day it starts?

  • Feder reads your Listmonk subscriber count and your new subscribers each day and compares each day with your own history.
  • It does not total your lists one by one. It tells you when new subscribers go quiet or either number moves outside its usual range.

Some numbers are too quiet to judge daily, such as a form filled in a few times a week. Until there is enough of your own history to judge a change, Feder says it is still learning and scores nothing, rather than guessing.

See what Feder reads from Listmonk, which feeds Reach. Feder only reads. It never changes anything in Listmonk.

Where do these answers come from?

Every cause and check on this page comes from the Listmonk help pages, quoted above with the date we read them. Last reviewed 2026-11-12. We read them again by 2027-11-12. If one changes, this page changes or comes down.

Know the day a number breaks, not the month after.