MailerLite Automation Not Sending
Quick answer
Automation emails stop when delays were edited (which cancels the queue), a trigger or condition is wrong, or the subscriber dropped out of the workflow. Check the Activity tab and the canceled filter.
Most likely fix: Find where subscribers are
How to fix it
Try these in order — the most common fix is first.
1. Find where subscribers are
- Open the automation and check the Activity tab
- Use the canceled filter in the automation dashboard to find dropped contacts
- Re-add the address to the workflow manually
Did this fix it?2. Fix triggers and conditions
- Use Exact match of a date for one-off dates
- Make condition field types match the data
- Pick the correct interval (in last, in next, after)
Did this fix it?3. Fix delays and time zone
- Pause before editing; edits to delays cancel queued subscribers, so re-add them
- Check the automation time zone and wait for the queue to run
- For weekly series, use one delay until the weekday then 1 week between emails
Did this fix it?4. Check plan limits
- Free allows 3 automations and over-limit accounts cannot activate or edit them
- Free accounts over 250 subscribers have automations paused until upgrade or list cleanup
Did this fix it?
Symptoms
Automation is active but emails do not arrive, show as sent but never delivered, or send at the wrong time.
Why it happens
- Changing delay settings cancelled queued subscribers
- Wrong trigger, such as Anniversary of a date instead of Exact match
- Condition field type mismatch (text vs date)
- Subscriber removed from the workflow
- Time zone mismatch with the queue
- Free or Comfort plan limit reached, so automations cannot be activated
This guide also covers
- mailerlite automation not sending
- mailerlite automation not working
- mailerlite welcome email not sent
- mailerlite automation stuck
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