Phone System · 1 min read
Why Are My Calls Marked as Spam, and How Can I Avoid It?
Why calls get labeled
Carriers and phone apps use algorithms to spot suspicious calls. Common reasons:
- High call volume from one number in a short time.
- Short call durations and low answer rates.
- Many complaints or people blocking the number.
- Calling people who didn't expect it.
- A recycled number that was used for spam before.
- Missing SHAKEN/STIR or CNAM.
How to fix and prevent it
- Check the label. Call your number from several carriers or use a free caller-reputation lookup.
- Enable SHAKEN/STIR (US). An EIN is required. Without an EIN, register on the Free Caller Registry instead.
- Update CNAM so your business name displays.
- Register with Voice Integrity to clear spam labels.
- Change calling habits: spread calls across the day, keep a reasonable volume per number and only call people who expect it.
- Consider a new number if the number is new to you or heavily flagged.
Tips
- Don't constantly rotate numbers; it can make reputation worse.
- Monitor answer rates. A sudden drop often means a new label.