Why Is the Opt-Out Text Added to Consecutive SMS Messages?

Modified on: Mon, 9 Nov, 2026 at 11:21 PM

Messaging Compliance
Why Is This Expected Behavior?
Why opt-out text may appear again in an outgoing message, and how it helps protect delivery.
Overview

This behavior is designed to help maintain messaging compliance and reduce the risk of carrier filtering or message delivery failures.

1

Why Carriers Care About Opt-Out Text

Carriers may filter or reject messages that do not meet applicable opt-out and messaging compliance requirements. Including clear opt-out instructions is one of the ways senders demonstrate compliance.

Why This Matters

Messages that fall short of opt-out requirements are more likely to be filtered by carriers or fail to deliver.

2

How the Platform Decides When to Include Opt-Out Text

To minimize the risk of carrier filtering, the platform checks whether the required opt-out text has already been included in a previously delivered message.

State A
Previous message was delivered

The recipient has already received the opt-out instructions, so the requirement is considered met.

State B
Previous message has not yet been delivered

The system may include the opt-out text again in the next outgoing message as a precaution. This helps ensure that recipients receive the required opt-out instructions and reduces the risk of carrier-related delivery issues.

Note

While this does not guarantee successful delivery, it helps maintain compliance with carrier messaging guidelines.

3

Frequently Asked Questions

Q: Why did my contact receive the opt-out text more than once?
If the earlier message containing the opt-out text had not yet been confirmed as delivered when the next message was sent, the system included the opt-out text again as a precaution.
Q: Is this a bug?
No. This is expected behavior designed to help maintain messaging compliance and reduce the risk of carrier filtering.
Q: Will the opt-out text be added to every message going forward?
No. Once a message containing the opt-out text has been delivered, the requirement is considered met and the text does not need to be repeated for that reason.
Q: Does including the opt-out text guarantee my message will be delivered?
No. It helps maintain compliance with carrier messaging guidelines and reduces delivery risk, but carriers apply other checks as well, so successful delivery is not guaranteed.
Q: Why would a previous message not be delivered yet?
Delivery confirmation from carriers can take some time, and messages may also be pending, queued, or failed. Until a delivered status is confirmed, the system treats the opt-out instructions as not yet received.

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