# Broadcast email stopped after sending exactly 8000 emails
**URL:** https://forum.mautic.org/t/broadcast-email-stopped-after-sending-exactly-8000-emails/37485
**Category:** Docker support
**Created:** [March 13, 2026, 6:38pm UTC](https://forum.mautic.org/t/broadcast-email-stopped-after-sending-exactly-8000-emails/37485 "2026-03-13T18:38:20Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@krasho](https://forum.mautic.org/u/krasho)
#### Post date: [March 13, 2026, 6:38pm UTC](https://forum.mautic.org/t/broadcast-email-stopped-after-sending-exactly-8000-emails/37485/1 "2026-03-13T18:38:20Z")
# Describe the bug
### Description
A broadcast email stopped sending before reaching all recipients.
The email was targeting **8,536 contacts** , but the sending process stopped after **exactly 8,000 emails** were sent. The remaining **536 contacts remained pending** and were never automatically sent.
I verified the database records and confirmed that only **8000 emails were recorded in `email_stats`**.
The remaining contacts were later sent only after creating a new segment and triggering a new email send.
* * *
# Steps to reproduce
1. Go to **Channels → Emails**
2. Create a **Segment/Broadcast Email**
3. Select a segment containing ~8,500 contacts
4. Click **Send**
5. Wait for the sending process to complete
6. Observe that sending stops after **8000 emails**
7. Check database table `email_stats` and see only 8000 records
* * *
# Expected behavior
The broadcast email should continue sending until **all contacts in the segment (8,536)** receive the email.
* * *
# Actual behavior
The broadcast stopped after **8000 emails** , leaving **536 contacts pending**.
The send process did not automatically resume.
* * *
# Docker Image Tag
```auto
mautic/mautic:5.1.0-apache
```
Installed using the **official CapRover one-click deployment**.
* * *
# Server Architecture
```auto
AMD64 (DigitalOcean droplet)
```
* * *
# Docker Image Digest
Currently not captured.
If required I can provide the digest using:
```auto
docker images --digests
```
* * *
# Dockerfile (if applicable)
Not applicable.
The container is deployed directly from the official image:
```auto
mautic/mautic:5.1.0-apache
```
No custom Dockerfile is used.
* * *
# Docker Compose (if applicable)
Not applicable.
Deployment is handled by **CapRover** , which internally manages Docker services.
Containers currently running:
```auto
mautic/mautic:5.1.0-apache
percona/percona-server:8.3
```
* * *
# Additional context
### SMTP Provider
SMTP is configured using **Brevo (Sendinblue)**.
The issue does **not appear to be related to SMTP rate limits or failures** :
- No SMTP errors were logged
- Emails were delivered successfully
- The sending process simply stopped after exactly **8000 messages**
* * *
### Email statistics verified in database
```auto
SELECT COUNT(*)
FROM email_stats
WHERE email_id = 12;
```
Result:
```auto
8000
```
* * *
### Open tracking works correctly
```auto
SELECT COUNT(*)
FROM email_stats
WHERE email_id = 12
AND is_read = 1;
```
Result:
```auto
232
```
* * *
### PHP configuration
```auto
max_execution_time = 0
max_input_time = -1
memory_limit = 512M
```
* * *
### Apache configuration
```auto
Timeout 300
```
* * *
### Cron jobs configured
```auto
mautic:segments:update
mautic:campaigns:update
mautic:campaigns:trigger
mautic:reports:scheduler
messenger:consume email --time-limit=55
```
At the time of the issue, **`mautic:broadcasts:send` was not configured in cron**.
After manually sending again from another segment, the remaining emails were delivered.
* * *
# Questions
1. Is there any known limit or batching behavior that could cause a broadcast email to stop at **8000 messages**?
2. Should `mautic:broadcasts:send` always be scheduled when sending broadcast emails?
3. Could this be related to Symfony Messenger workers stopping or not continuing the broadcast send process?
4. Is there a recommended cron configuration for broadcast emails in Mautic 5 when using Docker?
* * *
# Acknowledgements
☑ This issue is **NOT a security vulnerability**.
---
### Author:  [@raju](https://forum.mautic.org/u/raju)
#### Post date: [April 11, 2026, 11:08am UTC](https://forum.mautic.org/t/broadcast-email-stopped-after-sending-exactly-8000-emails/37485/2 "2026-04-11T11:08:35Z")
(post deleted by author)