Why did my Listmonk subscriber count drop?
The Listmonk help pages give 4 common reasons. The first to rule out: Depending on your bounce settings, Listmonk can remove or blocklist subscribers whose emails bounce, without anyone doing it by hand.
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?
Depending on your bounce settings, Listmonk can remove or blocklist subscribers whose emails bounce, without anyone doing it by hand.
In the Listmonk help:
Based on settings, subscribers returning bounced e-mails can either be blocklisted or deleted automatically.
Concepts, read 2026-11-12.Bounces can be reported to Listmonk by your email provider as well as by its own mailbox check, so bounce actions can run after any campaign.
In the Listmonk help:
listmonk supports receiving bounce webhook events from the following SMTP providers.
Bounce processing, read 2026-11-12.Many subscribers can be deleted at once by a query, so one cleanup can lower the count in a single day.
In the Listmonk help:
Delete subscribers based on SQL expression.
API / Subscribers, read 2026-11-12.A delete request can be set to remove all subscribers, so a script or tool with access can empty the list in one call.
In the Listmonk help:
When set to `true`, ignores any query and deletes all subscribers.
API / Subscribers, read 2026-11-12.
How do I check it myself?
Look at how many subscribers are enabled, disabled and blocklisted, to see whether people were removed or only changed status.
In the Listmonk help:
Status of the subscriber (`enabled`, `disabled`, `blocklisted`)
Querying and segmenting subscribers, read 2026-11-12.Check the bounce records for the day the count fell, to see whether bounce actions removed or blocklisted subscribers.
In the Listmonk help:
ensure that the appropriate action was taken after the configured bounce count was reached.
Bounce processing, 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 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.
What else goes wrong with these numbers?
- Why did my Listmonk new subscribers suddenly jump?Listmonk
- Why doesn't my Listmonk subscriber count match my lists?Listmonk
- Why did Google Analytics stop collecting data?Google Analytics
- Why aren't my key events showing in Google Analytics?Google Analytics
- Why does Google Analytics show (not set)?Google Analytics
See every question.
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.