Updates an existing send configuration. All fields are optional - only the provided fields will be updated.

Partial Updates

You can update any combination of fields. The send type can be changed, and when changing type, make sure to provide the type-specific required fields for the new type.

Important Notes

• The active field is read-only and cannot be updated via this endpoint
• When updating fromEmail, the reply email is automatically updated if it matches the old sender email
• You can update timing fields without changing the type
• Segments can be completely replaced by providing a new segmentIds array

Validation

Same validation rules as create apply for the fields being updated.