Contacts are passing through the SMS activity in Journey Builder, and the activity status shows as "Success." However, messages are not being received, or the actual number of delivered messages is significantly lower than the number of contacts who passed through the journey step.
The most common cause for this discrepancy is the Delivery Options configuration within the SMS Activity. Depending on the option selected, contacts who are not explicitly subscribed (opted-in) to MobileConnect may be automatically excluded from the send.
There are two distinct delivery options in the SMS Activity that control targeting behavior:
Send only to contacts who are subscribed currently
Behavior: MCE sends messages only to contacts who already have an active subscription (opt-in) status in MobileConnect.
Result: Even if a contact is in the Journey entry source, they will be skipped (excluded) if they are not registered in MobileConnect. This leads to a lower delivery count compared to the journey entry count.
Subscribe all contacts to a keyword
Behavior: MCE automatically subscribes (opts-in) every contact passing through the activity to the specified keyword, regardless of their current status, and then sends the message.
Result: The message is delivered to all contacts who pass through the activity.
Requirement: Use this option only if you have obtained explicit consent from these users to receive SMS messages, as it forces a subscription.
To check why messages might be skipping contacts:
Open the relevant journey in Journey Builder.
Click the SMS Activity icon on the canvas.
In the activity details pane (left side), click the dropdown menu at the top and select Summary.
Scroll down to the Delivery Options section to see which mode is currently active.
To ensure delivery to all contacts (by auto-subscribing them), follow these steps:
Open the journey (create a new version if the journey is currently running).
Click the SMS Activity on the canvas.
Select Delivery Options from the configuration menu
Select Subscribe all contacts to a keyword.
Review the Opt-in Certification Policy. If you meet the requirements, acknowledge the policy and click Done.
Q. Does a "Success" status in Journey Builder guarantee that the SMS was delivered?
A. No, it does not guarantee delivery.
The numbers and status in Journey Builder indicate that the contact successfully passed through the activity step. If the delivery option is set to "Send only to contacts who are subscribed currently" and an unsubscribed contact enters the step, the system correctly identifies that they should be skipped. The activity is considered "Successful" because the logic executed correctly, even though no message was sent. To verify actual delivery, query the _SMSMessageTracking Data View or check Mobile Studio reports (e.g., SMS Message Detail).
Q. Are Super Messages consumed if a contact is skipped due to opt-in status?
A. No. Super Messages are only consumed for messages that are actually attempted for delivery. Contacts excluded by the "Send only to contacts who are subscribed currently" setting do not consume Super Messages.
005263979

We use three kinds of cookies on our websites: required, functional, and advertising. You can choose whether functional and advertising cookies apply. Click on the different cookie categories to find out more about each category and to change the default settings.
Privacy Statement
Required cookies are necessary for basic website functionality. Some examples include: session cookies needed to transmit the website, authentication cookies, and security cookies.
Functional cookies enhance functions, performance, and services on the website. Some examples include: cookies used to analyze site traffic, cookies used for market research, and cookies used to display advertising that is not directed to a particular individual.
Advertising cookies track activity across websites in order to understand a viewer’s interests, and direct them specific marketing. Some examples include: cookies used for remarketing, or interest-based advertising.