Who This Is For / When to Use
Account owners using SMS, bulk SMS, workflows, or campaigns
Teams sending Application-to-Person (A2P) messages
Anyone encountering SMS limits, DND behavior, or compliance errors
Phone Messaging Policy Overview
Kyrios requires all SMS sent through the platform to comply with applicable laws, carrier standards, and A2P messaging guidelines.
This policy exists to:
Prevent SMS spam from fake or low-quality signups
Avoid account blocks caused by suspicious messaging behavior
Reduce legal risk from messaging non-consenting recipients
All SMS sent through Kyrios—regardless of number type (long code or toll-free)—must follow this policy.
Consent Requirements (Opt-In)
What Is Required
SMS may only be sent to contacts who have explicitly opted in
Consent cannot be bought, sold, or transferred
Purchased or scraped phone lists are not allowed
Key Rule
SMS must only be sent to contacts who knowingly consented to receive messages from your account.
Revocation of Consent (Opt-Out)
Mandatory Opt-Out Language
Every initial outbound SMS must include opt-out instructions such as:
“Reply STOP to unsubscribe”
Contacts must be able to revoke consent at any time using standard opt-out keywords.
What Happens After Opt-Out
The contact is placed under Permanent DND
All queued and future SMS to that contact will fail
Sender Identification Requirements
Sender ID Rule
Each initial message must clearly identify the sender (the party that obtained consent).
Kyrios automatically appends sender identification in this format:
“Thanks, <Location Name>”
Follow-up messages in an ongoing conversation are exempt.
Prohibited Messaging Content
You may not send SMS related to:
Alcohol
Firearms
Gambling
Tobacco
Adult content
Filtering Evasion & Spam Prevention
Kyrios strictly prohibits:
Intentionally misspelled words to bypass filters
Non-standard opt-out phrases
Snowshoeing (spreading similar messages across many numbers to evade detection)
SMS Ramp-Up Model (New Accounts)
All new accounts using the Phone System (from February 1, 2024) follow an 8-level ramp-up model.
Daily SMS Limits by Level
Level | Daily SMS Limit |
1 | 100 |
2 | 250 |
3 | 500 |
4 | 750 |
5 | 1500 |
6 | 2250 |
7 | 3000 |
Day 8 & Ongoing | 3000+ |
How the Ramp-Up Works
The ramp begins when the first successful SMS is sent, not at signup
All accounts start at Level 1 (100 SMS / 24 hours)
To unlock the next level:
Send the full daily limit within 24 hours
SMS sending is temporarily disabled for the next 24 hours
After 24 hours, the next level unlocks
This process repeats until Level 8.
SMS Limit Error Messages
Conversation Error
“You have exceeded your SMS sending limit.”
Bulk Action Error
“You are allowed to send 5000 message(s) in a day. You have already sent 5000 message(s). If you wish to proceed, 1 message(s) will be failed.”
Spam Message Handling & Message Statuses
Each SMS may appear in one of four states:
Delivered – Successfully delivered to the contact
Sent – Sent to the carrier, delivery response pending
Failed – Not sent or canceled
Undelivered – Blocked due to policy or carrier rules
Kyrios evaluates Undelivered messages to improve future deliverability.
Undelivered SMS Error Codes & DND Actions
Code | Description | Remediation |
30005 | User inactive / number does not exist | Temporary DND |
30003 | Unreachable / out of service | Temporary DND |
30004 | Do not want SMS | Permanent DND |
30006 | Landline / cannot receive SMS | Temporary DND |
30008 | Other | No action |
DND Types Explained
Temporary DND
Applied automatically
Can be revoked by an account admin
Permanent DND
Applied when contact opts out or cannot receive SMS
Cannot be removed from the UI
Revoke DND for a Contact
Temporary DND
Open the contact record
Remove the DND flag
🖼️ Image Placeholder – Contact DND toggle screen
Permanent DND
The contact must reply with:
STARTYESUNSTOP
If DND is not removed after this, contact support.
Opt-Out Language Enforcement
What Kyrios Automatically Adds
For Bulk SMS only, Kyrios appends:
“Reply STOP to unsubscribe”
This does not apply to:
Workflows
Campaigns
One-on-one conversations
🖼️ Image Placeholder – Sample opt-out language preview
Customize the Opt-Out Message
You can customize opt-out language here:
Settings → Business Profile → General
🖼️ Image Placeholder – Opt-out message settings screen
If your message already contains a valid opt-out keyword, Kyrios does not append another.
Error Rate & Opt-Out Rate Monitoring
Kyrios actively monitors account health.
Thresholds
Event | Trigger |
Violation Email | 8% error rate OR 1% opt-out rate |
Temporary Restriction | 12.5% error rate OR 2.5% opt-out rate |
During suspension:
All outbound SMS fail until 00:00 UTC
One-on-one conversations and test SMS are still allowed
What To Do After a Violation Email
Stop all workflows, campaigns, and bulk actions to non-opted-in contacts
Enable and customize Sender ID and opt-out language
Avoid bulk blasts or cold SMS campaigns
Common Issues and Fixes
Cannot Send SMS – DND Active
Error: “Cannot send messages as DND is active for SMS.”
Fix:
Temporary DND: Remove from contact record
Permanent DND: Contact must opt back in via keyword
FAQ
How often does the SMS limit reset?
Every 24 hours. After Day 8, the limit caps at 5000 SMS daily.
How can I send more than 5000 SMS per day?
After reaching Day 8, contact your Account Manager with the subject:
Increase SMS Daily Limit
Include:
Account name
Requested limit
Use case
Can we respond to replies after hitting the daily limit?
No. Manual, automated, and bulk SMS are all restricted during the limit window.
Can DND be removed in bulk?
No. DND removal must be handled per contact to protect compliance.
Does sender ID and opt-out language apply to workflows or manual SMS?
No. This feature applies only to Bulk SMS.