Set From Number
Last updated: April 12, 2026
Last Updated: April 12, 2026
Customer-Facing Guide
What this step does
Set From Number controls which Sendblue number a workflow should use when sending the message.
When to use it
When a workflow should send from a specific line or sender identity.
When different contacts, teams, or workflow paths require different sending numbers.
Why it matters
A wrong or missing sending number is one of the most common causes of workflow sends failing even though the rest of the workflow logic is correct.
Common mistakes
Pointing to a number that is not assigned to the account.
Leaving the field blank or mapped incorrectly.
Using an outdated number from an old setup.
How to verify it worked
Check which sending number the workflow step is actually using.
Confirm that number is assigned to the account and is the one you intended.
If sends are failing, compare the configured sending number against the account's assigned Sendblue numbers.