(Tcl) SendGrid Hello World -- Send Simple Email to Single Recipient

See more SendGrid Examples

Sends an email to a single recipient using SendGrid.

For more information, see https://sendgrid.com/docs/for-developers/sending-email/curl-examples/

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load ./chilkat.dll

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

set http [new_CkHttp]

# Implements the following CURL command:

# curl --request POST \
#   --url https://api.sendgrid.com/v3/mail/send \
#   --header 'Authorization: Bearer YOUR_API_KEY' \
#   --header 'Content-Type: application/json' \
#   --data '{"personalizations": [{"to": [{"email": "recipient@example.com", "name": "Recipient Name"}]}],"from": {"email": "sendeexampexample@example.com"},"subject": "Hello, World!","content": [{"type": "text/plain", "value": "Heya!"}]}'

# Use the following online tool to generate HTTP code from a CURL command
# Convert a cURL Command to HTTP Source Code

# Use this online tool to generate code from sample JSON:
# Generate Code to Create JSON

# The following JSON is sent in the request body.

# {
#   "personalizations": [
#     {
#       "to": [
#         {
#           "email": "recipient@example.com",
#           "name": "Recipient Name"
#         }
#       ]
#     }
#   ],
#   "from": {
#     "email": "sendeexampexample@example.com"
#   },
#   "subject": "Hello, World!",
#   "content": [
#     {
#       "type": "text/plain",
#       "value": "Heya!"
#     }
#   ]
# }

set json [new_CkJsonObject]

CkJsonObject_UpdateString $json "personalizations[0].to[0].email" "recipient@example.com"
# The "name" is optional.
CkJsonObject_UpdateString $json "personalizations[0].to[0].name" "Recipient Name"
CkJsonObject_UpdateString $json "from.email" "sendeexampexample@example.com"
CkJsonObject_UpdateString $json "subject" "Hello, World!"
CkJsonObject_UpdateString $json "content[0].type" "text/plain"
CkJsonObject_UpdateString $json "content[0].value" "Heya!"

# Adds the "Authorization: Bearer YOUR_API_KEY" header.
CkHttp_put_AuthToken $http "YOUR_API_KEY"
CkHttp_SetRequestHeader $http "Content-Type" "application/json"

# resp is a CkHttpResponse
set resp [CkHttp_PostJson3 $http "https://api.sendgrid.com/v3/mail/send" "application/json" $json]
if {[CkHttp_get_LastMethodSuccess $http] == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkJsonObject $json
    exit
}

if {[CkHttp_get_LastMethodSuccess $http] != 1} then {
    puts [CkHttp_lastErrorText $http]
} else {
    puts "response status code: [CkHttpResponse_get_StatusCode $resp]"
    # Display the response.
    # If successful, the response code is 202 and the response body string is empty.
    # (The response body string may also be empty for error response codes.)
    puts [CkHttpResponse_bodyStr $resp]
    delete_CkHttpResponse $resp

}


delete_CkHttp $http
delete_CkJsonObject $json