我需要Laravel的准确Sendgrid SMTP凭证

Question

   MAIL_DRIVER=smtp
   MAIL_HOST=smtp.sendgrid.net
   MAIL_PORT=25
   MAIL_USERNAME=<what should be here>
   MAIL_PASSWORD=<what should be here>
   MAIL_ENCRYPTION=tls
   MAIL_FROM_ADDRESS=<i know this detail>
   MAIL_FROM_NAME=<i also know `enter code here`this detail>

我需要知道上面指定字段中的确切sendgrid详细信息。