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PureBasic

Mailgun Send Email using MIME

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Send an email using MIME. This allows for the Chilkat email object to be used to construct the email. Then it can be sent using Mailgun.

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PureBasic 
IncludeFile "CkJsonObject.pb"
IncludeFile "CkHttp.pb"
IncludeFile "CkEmail.pb"
IncludeFile "CkHttpRequest.pb"
IncludeFile "CkHttpResponse.pb"
IncludeFile "CkStringBuilder.pb"

Procedure ChilkatExample()

    success.i = 0

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

    ; We're going to create an email that contains an .zip attachment,
    ; and also both plain-text and HTML alternative bodies.
    ; The HTML body will include an image.

    email.i = CkEmail::ckCreate()
    If email.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Adding attachments, HTML/plain-text bodies, etc can be done
    ; in any order:

    ; Add an attachment
    contentType.s = CkEmail::ckAddFileAttachment(email,"qa_data/hamlet.zip")
    If CkEmail::ckLastMethodSuccess(email) = 0
        Debug CkEmail::ckLastErrorText(email)
        CkEmail::ckDispose(email)
        ProcedureReturn
    EndIf

    ; Add some headers:
    CkEmail::setCkSubject(email, "This is a complex email")
    ; Please change this email address before testing.
    success = CkEmail::ckAddTo(email,"Joe Example","joe@example.com")
    CkEmail::setCkFrom(email, "Your Name <mailgun@YOUR_DOMAIN_NAME>")

    ; Add a plain-text body:
    CkEmail::ckAddPlainTextAlternativeBody(email,"This is the plain-text body")

    ; Add an image that will be embedded in the HTML body.
    success = CkEmail::ckAddRelatedFile2(email,"qa_data/jpg/starfish.jpg","starfish.jpg")
    If success = 0
        Debug CkEmail::ckLastErrorText(email)
        CkEmail::ckDispose(email)
        ProcedureReturn
    EndIf

    ; Add an HTML body:
    html.s
    html = "<html><body><b>This is the HTML body</b><br><img src=" + Chr(34) + "starfish.jpg" + Chr(34) + "></body></html>"

    CkEmail::ckAddHtmlAlternativeBody(email,html)

    ; ------------------------------------------------------------------------
    ; Send the above email using Mailgun

    http.i = CkHttp::ckCreate()
    If http.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Implements the following CURL command:

    CkHttp::setCkLogin(http, "api")
    CkHttp::setCkPassword(http, "sending_api_key")    ;  Replace with your actual sending API key.

    req.i = CkHttpRequest::ckCreate()
    If req.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkHttpRequest::setCkHttpVerb(req, "POST")
    CkHttpRequest::setCkPath(req, "/v3/YOUR_DOMAIN_NAME/messages.mime")
    CkHttpRequest::setCkContentType(req, "multipart/form-data")

    CkHttpRequest::ckAddParam(req,"from","Your Name <mailgun@YOUR_DOMAIN_NAME>")
    CkHttpRequest::ckAddParam(req,"to","Joe Example <joe@example.com>")
    CkHttpRequest::ckAddStringForUpload2(req,"message","message.eml",CkEmail::ckGetMime(email),"utf-8","application/octet-stream")

    resp.i = CkHttpResponse::ckCreate()
    If resp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkHttp::ckHttpSReq(http,"api.mailgun.net",443,1,req,resp)
    If success = 0
        Debug CkHttp::ckLastErrorText(http)
        CkEmail::ckDispose(email)
        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkHttpResponse::ckDispose(resp)
        ProcedureReturn
    EndIf

    sbResponseBody.i = CkStringBuilder::ckCreate()
    If sbResponseBody.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkHttpResponse::ckGetBodySb(resp,sbResponseBody)
    jResp.i = CkJsonObject::ckCreate()
    If jResp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckLoadSb(jResp,sbResponseBody)
    CkJsonObject::setCkEmitCompact(jResp, 0)

    Debug "Response Body:"
    Debug CkJsonObject::ckEmit(jResp)

    respStatusCode.i = CkHttpResponse::ckStatusCode(resp)
    Debug "Response Status Code = " + Str(respStatusCode)
    If respStatusCode >= 400
        Debug "Response Header:"
        Debug CkHttpResponse::ckHeader(resp)
        Debug "Failed."
        CkEmail::ckDispose(email)
        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkHttpResponse::ckDispose(resp)
        CkStringBuilder::ckDispose(sbResponseBody)
        CkJsonObject::ckDispose(jResp)
        ProcedureReturn
    EndIf

    ; Sample JSON response:
    ; (Sample code for parsing the JSON response is shown below)

    ; {
    ;   "id": "<20210429234809.1.2D550E1C94D3D98F@sandbox0e542e4c577f4bbb98c8bf6b6bca727b.mailgun.org>",
    ;   "message": "Queued. Thank you."
    ; }

    ; Sample code for parsing the JSON response...
    ; Use the following online tool to generate parsing code from sample JSON:
    ; Generate Parsing Code from JSON

    id.s = CkJsonObject::ckStringOf(jResp,"id")
    message.s = CkJsonObject::ckStringOf(jResp,"message")


    CkEmail::ckDispose(email)
    CkHttp::ckDispose(http)
    CkHttpRequest::ckDispose(req)
    CkHttpResponse::ckDispose(resp)
    CkStringBuilder::ckDispose(sbResponseBody)
    CkJsonObject::ckDispose(jResp)


    ProcedureReturn
EndProcedure