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Sending SMS campaigns? Follow these best practices to make sure your messages get delivered and not marked as spam. Poorly written or overly promotional messages may be blocked by mobile networks — even before they reach your recipients.
🚫 Common Reasons Your Message Might Be Marked as Spam
1. ALL CAPS or Excessive Symbols
- Text like:
🔥FREE OFFER🔥 JOIN NOW!!!looks spammy. - Use proper capitalization and avoid overusing emojis or symbols.
2. Unverified, Suspicious, or Long URLs
- Links from unknown or suspicious domains are high-risk.
- Use well-known short links (e.g.,
youtu.be/...) and avoid multiple links.
3. Too Promotional or Aggressive Language
- Phrases like: “Buy now,” “Hurry! Limited time,” or “Lowest price guaranteed!” are red flags.
- Tone down the marketing language.
4. No Business or Sender Identification
- If the message doesn’t clearly say who it’s from, recipients may flag it as spam.
- Always identify the sender in the message.
5. No Opt-out Mechanism (for Bulk SMS)
- Especially for marketing or class alerts, it’s good practice to include:
“Reply STOP to unsubscribe.”
6. Unsolicited or Cold Messages
- Only message users who gave permission or opted in.
- Cold messaging (sending to unknown numbers) can violate telecom rules.
7. Too Long or Overloaded Messages
- Keep SMS under 160 characters when possible.
- Avoid combining multiple topics in one message.
8. Incorrect or Invalid Phone Numbers
- Sending to non-existent or outdated numbers can affect your sender reputation.
✅ Why This Version Works Better
O/L Maths group classes by Mr. Ruwan (BSc Eng, Moratuwa). Weekends in Colombo. Call/WhatsApp 0712345678 for details.
This message is effective because:
✅ Uses sentence case — no shouting
✅ Clearly identifies the teacher
✅ Short and focused — one purpose, one call to action
✅ Uses a clean and trusted link
✅ Contact details are present but not overdone
✅ No hype or promotional buzzwords
✅ No misleading or manipulative language
📌 Pro Tips for a High-Performing Campaign
- ✅ Keep it short and sweet
- ✅ Personalize where possible (e.g., “Hi [Name]”)
- ✅ Schedule messages at appropriate times (not too early or late)
- ✅ Track delivery reports and monitor bounce rates
- ✅ Send test messages before mass sending
💬 Need Assistance?
We’re here to help you craft better campaigns.
Contact us anytime at [email protected] or via live chat.
Together, we’ll ensure your SMS gets delivered safely and successfully! 🚀