我在sendgrid上创建帐户并使用api密钥发送电子邮件但邮件未发送

Question

I got status 202 but mail not received...

SendGrid\Response Object ( [_status_code] => 202 [_body] => [_headers] => HTTP/1.1 202 Accepted Server: nginx Date: Wed, 03 Apr 2019 08:09:06 GMT Content-Length: 0 Connection: keep-alive X-Message-Id: u_G6oJYiRo63JRmUKMWOKg Access-Control-Allow-Origin: https://sendgrid.api-docs.io Access-Control-Allow-Methods: POST Access-Control-Allow-Headers: Authorization, Content-Type, On-behalf-of, x-sg-elas-acl Access-Control-Max-Age: 600 X-No-CORS-Reason: https://sendgrid.com/docs/Classroom/Basics/API/cors.html )