PureBasic
Mailgun Send Send HTML Email with Attachments and HTML Images

Sends an HTML email with images and attachments.
Chilkat PureBasic Downloads

PureBasic
IncludeFile "CkBinData.pb"
IncludeFile "CkHttp.pb"
IncludeFile "CkJsonObject.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.

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

    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")
    CkHttpRequest::setCkContentType(req, "multipart/form-data")

    ; Change YOUR_DOMAIN_NAME to something like "mg.your-domain.com".
    CkHttpRequest::ckAddParam(req,"from","Your Name <mailgun@YOUR_DOMAIN_NAME>")
    CkHttpRequest::ckAddParam(req,"to","Joe Example <joe@example.com>")
    CkHttpRequest::ckAddParam(req,"subject","Hello Joe Example")
    CkHttpRequest::ckAddParam(req,"html","<html><body><b>This is the HTML body</b><br><img src=" + Chr(34) + "cid:cidStarfish.jpg" + Chr(34) + "></body></html>")

    ; An a attachd file
    bd.i = CkBinData::ckCreate()
    If bd.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkBinData::ckLoadFile(bd,"qa_data/hamlet.zip")
    If success = 0
        Debug "Failed to load file attachment."
        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkBinData::ckDispose(bd)
        ProcedureReturn
    EndIf

    CkHttpRequest::ckAddBdForUpload(req,"attachment","hamlet.zip",bd,"application/zip")

    ; add an image as CID
    success = CkBinData::ckLoadFile(bd,"qa_data/jpg/starfish.jpg")
    If success = 0
        Debug "Failed to load HTML image."
        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkBinData::ckDispose(bd)
        ProcedureReturn
    EndIf

    CkHttpRequest::ckAddBdForUpload(req,"inline","cidStarfish.jpg",bd,"image/jpeg")

    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)
        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkBinData::ckDispose(bd)
        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."
        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkBinData::ckDispose(bd)
        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")


    CkHttp::ckDispose(http)
    CkHttpRequest::ckDispose(req)
    CkBinData::ckDispose(bd)
    CkHttpResponse::ckDispose(resp)
    CkStringBuilder::ckDispose(sbResponseBody)
    CkJsonObject::ckDispose(jResp)


    ProcedureReturn
EndProcedure