401
Array
(
    [0] => HTTP/2 401
    [1] => date: Tue, 09 Dec 2025 19:36:00 GMT
    [2] => content-type: application/json
    [3] => content-length: 62
    [4] => server: nginx
    [5] => access-control-allow-methods: POST, OPTIONS
    [6] => access-control-max-age: 21600
    [7] => access-control-expose-headers: Link, Location
    [8] => access-control-allow-origin: *
    [9] => access-control-allow-headers: AUTHORIZATION, Content-Type, On-behalf-of, x-sg-elas-acl, X-Recaptcha, X-Request-Source, Browser-Fingerprint
    [10] => content-security-policy: default-src https://api.sendgrid.com; frame-src 'none'; object-src 'none'
    [11] => x-content-type-options: nosniff
    [12] => strict-transport-security: max-age=31536000
    [13] => x-robots-tag: noindex, nofollow
    [14] => twilio-request-id: RQ36cblpxvaB5PZ9FzM8fnbP5j5qn
    [15] => x-envoy-upstream-service-time: 109
    [16] => cache-control: no-cache
    [17] => referrer-policy: strict-origin-when-cross-origin
    [18] => 
    [19] => 
)
{"errors":[{"field":null,"message":"authorization required"}]}
401
Array
(
    [0] => HTTP/2 401
    [1] => date: Tue, 09 Dec 2025 19:36:00 GMT
    [2] => content-type: application/json
    [3] => content-length: 62
    [4] => server: nginx
    [5] => access-control-allow-methods: HEAD, OPTIONS, GET
    [6] => access-control-max-age: 21600
    [7] => access-control-expose-headers: Link, Location
    [8] => access-control-allow-origin: *
    [9] => access-control-allow-headers: AUTHORIZATION, Content-Type, On-behalf-of, x-sg-elas-acl, X-Recaptcha, X-Request-Source, Browser-Fingerprint
    [10] => content-security-policy: default-src https://api.sendgrid.com; frame-src 'none'; object-src 'none'
    [11] => x-content-type-options: nosniff
    [12] => strict-transport-security: max-age=31536000
    [13] => x-robots-tag: noindex, nofollow
    [14] => twilio-request-id: RQ36cblp5TBuAe56MQoXFyq5luaYj
    [15] => x-envoy-upstream-service-time: 109
    [16] => cache-control: no-cache
    [17] => referrer-policy: strict-origin-when-cross-origin
    [18] => 
    [19] => 
)
{"errors":[{"field":null,"message":"authorization required"}]}
401
Array
(
    [0] => HTTP/2 401
    [1] => date: Tue, 09 Dec 2025 19:36:00 GMT
    [2] => content-type: application/json
    [3] => content-length: 88
    [4] => server: nginx
    [5] => access-control-allow-origin: https://sendgrid.api-docs.io
    [6] => access-control-allow-methods: POST
    [7] => access-control-allow-headers: Authorization, Content-Type, On-behalf-of, x-sg-elas-acl
    [8] => access-control-max-age: 600
    [9] => x-no-cors-reason: https://sendgrid.com/docs/Classroom/Basics/API/cors.html
    [10] => strict-transport-security: max-age=31536000; includeSubDomains
    [11] => content-security-policy: frame-ancestors 'none'
    [12] => cache-control: no-cache
    [13] => x-content-type-options: no-sniff
    [14] => referrer-policy: strict-origin-when-cross-origin
    [15] => 
    [16] => 
)
{"errors":[{"message":"Permission denied, wrong credentials","field":null,"help":null}]}