SendGrid API error codes and messages?
问题 I have looked all over in their site and forums and wiki, but so far I have not been able to find an answer to this question. Where can I find a list of SendGrid API error codes and messages? Thanks 回答1: Web API reference Web API v3 reference 回答2: https://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/errors.html This explains each of the errors or status codes raised. if you get a 4xx, try with a different key with different permissions. if you get 2xx, you are done.if it's a 5xx, then