57005: 'Category' is too long

This error occurs when the Category value in your request is longer than Twilio accepts. For SendGrid email sends, each category must be 255 characters or fewer.

• The Category value contains more than 255 characters.

• Shorten Category to 255 characters or fewer before you send the request.
• Validate the value in your application and reject or trim any overlong category names before submission.
• Use categories for broad message grouping, and keep each category label concise.

• Working with Categories
• Mail Send Errors
• Debugging Your Twilio Application