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