Troubleshooting Essentials | Sendblue Knowledge Base

High-signal troubleshooting guides for the most common customer-facing support questions.

Message Delivery Triage in Sendblue

Why Messages Fail When the Wrong From Number Is Used

Daily Limits, Rate Limits, and Capacity in Sendblue

Calling Setup: Power Dialer, Forwarding, and Voicemail Basics

Duplicate Messages in Sendblue: Workflow Fired More Than Once or Same Contact Re-Enrolled?

Read Receipts in Sendblue: iMessage vs SMS

Workflow Troubleshooting: Message Never Sent vs Message Never Reached Sendblue

Why a Workflow Can Create a Message Without Sending It

Why a Message Can Be Sent Even If It Looks Missing in the Dashboard