Your SMS delivery rate suddenly drops in Morocco?

This sudden drop in deliverability is the most complex problem to debug for marketing and technical teams, as the origin can be multiple.Is it the operator?Is it the quality of your base?Is it the content of your message?

Here is a rigorous diagnostic method to isolate the problem rather than blindly navigate.

The first mistake is to blame the network immediately. A delivery rate drops for 3 major reasons: - List problem: Your numbers have become outdated. - Content problem/Sender ID: You trigger a operator anti-spam filter. - Network incident: An operator or a route encounters a technical problem.

To identify the culprit, you must cross your delivery status (DLR) data.

Open the dashboard of your API provider or your own logs, and extract gross exports from the last 24 hours.

The rate of 'Failed' and 'Unknown' - If the rate of 'Failed' explodes (e.g.: >15%), it's a problem with List. Your database contains too many unallocated or terminated numbers. The operator rejects the inactive numbers. - If the rate of 'Unknown' or 'Rejected' explodes, it's a problem with Content or Sender ID. The operator willingly blocks your messages.

Diagnosis by operator Filter your logs by operator prefix: - Numbers starting with 0661, 0662, 0666 (Generally IAM) - Numbers starting with 0614, 0663 (Orange) - Numbers starting with 0600, 0633 (inwi)

Note: With number portability in Morocco, the prefix is no longer 100% guaranteed, but statistically on a large basis, it remains a reliable indicator.

If your delivery rate drops from 95% to 20% on the numbers 0661 but remains perfect on the others, the problem comes exclusively from Maroc Telecom (isolated network failure or blocking your Sender ID with that specific operator).

3. Time-to-Deliver Calculate the time between sending HTTP from your server and receiving the final DLR. Compare it with the per-carrier median published in our benchmark, measured the same way (up to the final report), rather than with a rule of thumb. If you find that 40% of your messages take more than 15 minutes, you are facing a network congestion problem (Throttling). The network limits your speed because you send too many messages at the same time over a period of high affluence.

Campaign Diagnosis (Neutral Message Test) If the problem seems widespread, perform Neutral Message Test: Send a very basic SMS (“This is a technical test”) from your account to 3 test numbers (1 IAM, 1 Orange, 1 inwi). If this message arrives instantly, then the network failure is eliminated. The drop in your delivery rate is caused by the content of your marketing message (blocked links, financial keywords).

Short Message Service Center (SMSC) failures in Moroccan operators exist.In a major incident, messages accumulate in the queue.Your DLR rate in 'Pending' status will fly off.

In this situation: - Do not resume the campaign. You would worsen the waiting line. - Check out your email provider's status page. The best providers post alerts ("Incident ongoing at Operator X in Morocco"). - If the status Pending expires (Validity Period) and switches to `Failed', contact support to identify whether the incident is recognised and justifies a recredit of the missed SMS.

By building an internal dashboard based on these 4 indicators, you will go from a panic reaction to a data analysis that will allow you to correct the drop in deliverability in less than 15 minutes.