Why did fewer subscribers get my Postscript campaign than are on my list?
The Postscript help pages give 3 common reasons. The first to rule out: If you offer subscribers a pause option, those who pause are left out of campaign messages for a while, so a campaign can reach fewer people than your list holds.
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 Postscript help pages give, and how to check each one yourself.
What causes it?
If you offer subscribers a pause option, those who pause are left out of campaign messages for a while, so a campaign can reach fewer people than your list holds.
In the Postscript help:
With a pause option, subscribers can temporarily opt out of receiving campaign messages from your shop
Allow Subscribers to Temporarily Pause Texts, read 2026-11-12.A carrier may not be able to deliver a text to a phone that is turned off, disconnected or roaming.
In the Postscript help:
If a subscriber’s phone is turned off, disconnected, or roaming, a carrier may be unable to deliver your message.
Guide to Message Deliverability and Throughput, read 2026-11-12.Carriers filter the messages sent through their networks, so a text can be filtered before it reaches a subscriber.
In the Postscript help:
Carriers filter messages sent via their network for two reasons:
Guide to Message Deliverability and Throughput, read 2026-11-12.
How do I check it myself?
Look up a subscriber who says they got nothing and check whether they are still an active subscriber.
In the Postscript help:
Quickly see whether a customer is an active SMS subscriber.
Search Your Subscribers, read 2026-11-12.On the same subscriber, check the last time a message was sent to them to see whether the campaign went to that number.
In the Postscript help:
The last time Postscript sent them a message
Search Your Subscribers, read 2026-11-12.
How does Postscript work with Feder?
- Connect Postscript to Feder and it joins your Reach apps.
- When you connect Postscript, Feder checks the connection straight away and shows Connected only when that check passes. If a reading cannot be taken later, Feder shows it as not read, never as zero.
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 whether you can trust the numbers in Postscript, one of your Reach apps. Feder only reads. It never changes anything in Postscript.
What else goes wrong with these numbers?
- Why did my subscriber count drop in Postscript?Postscript
- Why did my Postscript texts arrive later than I scheduled?Postscript
- 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 Postscript 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.