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How To Increase Message Deliverability
Verify your Toll-Free numbers, align with 10DLC standards, and remove throughput limits so more of your messages reach customers.
Improving SMS Delivery Before Messages Start Getting Blocked
Sending text messages at scale without proper verification can lead to blocked messages, reduced throughput, or delivery failures.
Toll-Free verification helps carriers recognize your business as a legitimate sender and improves how messages are handled across networks.
Without registration and verification, businesses may run into strict sending limits or reduced deliverability as message volume increases.
This guide will walk you through how to improve message deliverability so your SMS campaigns, reminders, and follow-ups reach more customers reliably.
To begin, review why verification matters and how it affects SMS deliverability and throughput limits.
Why Verification Matters
Messaging platforms adjust allowable volumes for unverified Toll-Free traffic. Submitting your Toll-Free number(s) for verification can improve deliverability, align your sender profile with modern compliance expectations (including 10DLC standards), and remove throughput caps that block scale.
Quick takeaway: If you’re seeing delayed delivery, higher filtering, or frequent “message not delivered” outcomes, Toll-Free verification is one of the fastest wins—especially if you send higher volume SMS.
Before You Start
- If your Toll-Free numbers are already Verified, no action is required.
- If you have multiple numbers, submit the ones with the highest send volume first.
- Plan to complete the registration form fully—missing details can slow approval.
Submit Your Toll-Free Number(s) for Verification
- Go to: Settings → Phone Number.
- Open: Toll-Free Registration.
- Complete the form: Submit all required details. A support ticket may be created automatically.
- Watch the status: After submission, your number should display Pending.
- Continue sending: Pending numbers can typically be used while review completes.
Typical review time: 2–3 weeks, depending on review queues and the completeness of your submission.
Unverified Limits (For Reference)
Unverified Toll-Free numbers can be restricted by daily/weekly/monthly send caps. These limits are industry policies and may change over time.
| Window | Limit |
|---|---|
| Daily | 2,000 messages |
| Weekly | 12,000 messages |
| Monthly | 25,000 messages |
Note: The thresholds above were referenced as of Oct 1, 2022. Limits may change and typically don’t apply once a number is submitted and Pending/Verified.
Canada requirement: Registration is required for all Toll-Free numbers sending to Canada regardless of verification status.
Best Practices to Improve Deliverability
- Submit Toll-Free registration before scaling volume or launching promotions.
- Keep your business details consistent (brand name, website, and use case) across registration and messaging content.
- Use clear opt-in language and include opt-out instructions when required (e.g., STOP).
- Monitor failures/blocked messages and refine message content to reduce filtering triggers.
Pro tip: If you have multiple numbers, verify the one used for your most critical workflows first (appointments, payment links, onboarding, and high-intent follow-ups).
Increase throughput without fighting filters
Toll-Free registration helps remove caps and improves deliverability—so your SMS messages are more likely to reach customers at scale.
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Frequently Asked Questions
Why verify Toll-Free numbers?
Verification improves deliverability, aligns with platform standards, and removes daily/weekly/monthly limits applied to unverified Toll-Free numbers.
What are the limits for unverified Toll-Free numbers?
As of Oct 1, 2022: 2,000 per day; 12,000 per week; 25,000 per month. Limits may change and don’t apply once a number is submitted and pending/verified.
Can I message while verification is pending?
Yes. After submission, your number enters Pending and can be used without the unverified limits while review completes.
How long does verification take?
Typically 2–3 weeks, depending on completeness and review queues.
Do I need to verify numbers sending to Canada?
Registration is required for all Toll-Free numbers sending to Canada regardless of verification status.
Get more messages delivered
Registering your Toll-Free numbers helps reduce throttling and filtering—especially when you’re sending reminders, follow-ups, and high-volume campaigns.
Higher throughput. Better delivery. Fewer blocks.
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