Issue
When attempting to duplicate a Single Send in SendGrid, users may encounter an error message stating "Unable to Duplicate your Single Send." This issue prevents the duplication of an existing Single Send, which is often needed to quickly create similar email campaigns without starting from scratch.
Product
Twilio SendGrid (Email)
Cause
The error typically arises due to a mismatch in the internal ID of the Single Sender associated with the Single Send. Each Single Sender is assigned a unique internal ID when created. If a Single Sender is deleted and then re-added, the new instance receives a different internal ID. Consequently, any existing Single Sends linked to the original ID cannot be duplicated because the system cannot find the original Single Sender ID.
Resolution
To resolve this issue, follow these steps:
1. Export the HTML Code: Use the endpoint /v3/marketing/singlesends/{id} to extract the HTML code of the Single Send you wish to duplicate. This allows you to retain the design and content of the original email. More information on how to use this endpoint can be found at Get Single Send by ID
2. Recreate the Single Send: Use the exported HTML to create a new Single Send. This process involves setting up a new Single Send, with the same content and design as the original, by importing the HTML exported in the previous step. The steps to import HTML code can be found here.
3. Create a New Design: If you frequently use the same template, consider creating a Design in the Design Library. This approach allows you to import the design into a new Single Send without being tied to a specific Single Sender ID.
For more detailed instructions on using the Design Library, refer to this support article: Working with Marketing Campaigns Email Designs
Additional Information
API Reference: For developers, the SendGrid API provides endpoints to manage Single Sends programmatically. You can duplicate a Single Send using its ID via the API. For more details, visit the SendGrid API documentation
Design Library: Utilizing the Design Library for frequently used templates can streamline the process of creating new Single Sends and prevent issues related to Single Sender IDs.