⚡Quick answer -
Per campaign, you can upload up to 5,000 contacts (MyOperator limit). In addition, Meta applies daily messaging-tier caps per phone number (1 K → 10 K → 100 K → Unlimited). The lower of the two limits always applies.
Use this checklist whenever you plan or schedule a WhatsApp campaign so you avoid unexpected message failures caused by platform or Meta tier restrictions.
• A verified WhatsApp Business Account (WABA) phone number in MyOperator
• Your current Meta messaging tier (find it in FBM › WhatsApp Manager › Overview)
Constraint source | Hard limit | Applies to | Notes |
MyOperator platform | 5,000 contacts per campaign | Each upload file | Split lists >5 K into multiple campaigns |
Meta (WhatsApp) | Tier-based: 1 K, 10 K, 100 K, Unlimited per day | Each phone number | Health & quality score determine your tier |
Scenario | Outcome |
Upload 3,000 contacts, message limit is 10K | The campaign runs successfully. |
Upload 6,000 contacts, message limit is 100K | Must split into two ≤5K campaigns. |
Upload 5,000 contacts, message limit is 1K | Only the first 1 K messages are delivered; the remaining 4 K fail. |
Problem | Cause | Fix |
File > 5,000 rows | Breaches MyOperator limit | Split into batches and name them “Promo – Batch 1”, “Batch 2”… |
Daily send plan > tier cap | Meta tier too low | Improve quality score, wait 24 h, or request a tier upgrade. |
✓ Check your current Meta tier before scheduling.
✓ Keep batches clearly named for reporting.
✓ Grow send volume gradually to unlock higher tiers.
✓ Maintain low block/report rates to avoid tier downgrade.
✓ Add a buffer—never schedule the exact tier maximum.
Problem | Quick fix |
“Exceeded limit” error after upload | Verify file ≤5 K rows; split if needed. |
Only part of the audience received messages | Check whether you hit today’s Meta tier cap. |
Tier upgrade stuck at 1 K | Confirm phone number quality rating ≥ “Medium” and resend gradual volume over 48 h. |
Keywords: WhatsApp audience limit, MyOperator 5K cap, Meta messaging tiers, campaign size