SMS marketing in MONDAi reaches your audience where response rates are highest — average open rate for SMS is above 90%, compared to 25–40% for email. The tradeoff is a higher consent requirement and a lower tolerance for irrelevant messages. Done right, it is the most direct channel you have.
Phone Number Setup
1
Go to Settings → Phone Numbers
Purchase or verify a phone number through MONDAi. Local numbers tend to have better deliverability than toll-free.
2
Register for A2P 10DLC (US only)
US regulations require brand and campaign registration for application-to-person SMS. This is required before sending broadcast SMS in the US. MONDAi guides you through the registration process.
3
Allow time for A2P approval
Approval typically takes 1–5 business days.
Compliance Requirements
- Contacts must have explicitly opted in to receive SMS from you
- Every SMS must include opt-out instructions: "Reply STOP to unsubscribe"
- Do not send outside of normal business hours in the recipient's timezone
- A2P 10DLC registration is legally required for US bulk SMS
Send a Broadcast SMS
1
Go to Email Marketing → SMS Campaigns or Conversations → Bulk SMS
Location may vary slightly by account setup.
2
Select your recipient list
Only include contacts with verified SMS opt-in.
3
Write your message
Under 160 characters for a single message credit. Include opt-out instructions.
4
Schedule or send immediately
Common Mistakes
- Not completing A2P 10DLC registration before sending US bulk SMS — unregistered SMS will be blocked.
- Sending to contacts who have not explicitly opted in to SMS.
- Sending promotional SMS late at night or early morning.
- Writing an SMS message that is too long — over 160 characters splits into multiple messages and multiple credits.
Next Steps
- How to Set Up Double Opt-In — the cleanest way to collect SMS opt-in consent
- How to Set Up Missed Call Text-Back — automated SMS that requires no broadcast setup
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