🛡️ Understanding Mindbaz’s Preblocking System

We protect your deliverability before your IPs get blacklisted!

Mindbaz has implemented an automatic preblocking system to prevent your IPs from being blocked by major French ISPs: Orange, SFR, and LaPoste.

This system acts proactively, as soon as a complaint volume or rate threshold is exceeded.

📊 Tolerance thresholds by ISP

Each ISP sets its own complaint thresholds — exceeding them may result in a block:

Orange (Update August 2025): strict threshold at 0.6% complaint rate or 1,000 complaints/day
SFR: tolerance up to 3% complaint rate or 1,000 complaints/day
LaPoste: same as SFR, 3% complaint rate or 1,000 complaints/day

📌 Alert when a threshold is exceeded

Alerts are triggered if either of the following is exceeded:

Complaint rate (proportion of complaints vs. emails sent)
Complaint volume

🔁 What happens when a threshold is breached

When a complaint threshold is crossed, you are notified immediately by email.

A visible alert also appears:

On the Home Page
In campaign stats
In the Deliverability page

📩 You’ll receive a dedicated email notification for each preblocking event.

⚠️ Make sure the right people receive these alerts — you can update the recipient list anytime.

🔁 A 4-level system over a rolling 30-day window

Each new breach triggers a higher alert level depending on how many alerts occurred in the past 30 days

Level	Condition	Mindbaz Action	What You Should Do
1	First breach	⚠️ Simple alert, no blocking	Monitor your stats closely
2	Second breach	⛔ Automatic temporary block	Wait until the 24h block ends
3	Third breach	⛔ Block remains until action	✅ Confirm a commitment in the alert
4	Fourth breach	⛔ Total block	🚨 Contact support for further review

⚠️ Level 3 or 4 alerts require immediate action — otherwise, all sends to the impacted ISP (Orange, SFR, or LaPoste) will be stopped.

🧠 What to do after a block?

1. If you exceeded the complaint volume

→ You must significantly reduce your send volumes.

Complaint volume	Recommended action
~1100 complaints	Reduce volume by at least 20%
>1500 complaints	Cut volume in half

This allows you to:

Pause and fix your targeting/content
Identify thresholds at which complaints spike

2. If you exceeded the complaint rate

→ Review your target audience to ensure the right messages go to the right recipients

→ Check marketing fatigue: Have subscribers received too many messages from the same brand or topic?

→ Make sure your unsubscribe link is clearly visible — hiding it leads to more complaints.

→ Pay close attention to new subscribers — especially in commercial prospecting, new users are more likely to complain. Balance your volumes accordingly.

✅ In Summary

This system protects your deliverability and reputation with Orange, SFR, and LaPoste
It activates automatically
The faster you react, the quicker you can resume sending
Level 3 alerts require a confirmation to resume sending
Level 4 alerts require you to contact our support team for resolution