Xbase++
Outlook Send Email using MIME Format

This example sends an email using MIME format via the Microsoft Graph Outlook REST API.
Chilkat Xbase++ Downloads

Xbase++
LOCAL nSuccess
LOCAL oHttp
LOCAL oJsonToken
LOCAL oEmail
LOCAL cContentIdStarfish
LOCAL oSbHtml
LOCAL nNumReplacements
LOCAL cContent
LOCAL oBdMime
LOCAL oSbBase64
LOCAL oResp
LOCAL oJson

nSuccess := 0

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

oHttp := CreateObject("Chilkat.Http")

//  Use your previously obtained access token here:
//  See the following examples for getting an access token:
//     Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
//     Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
//     Refresh Access Token (Azure AD v2.0 Endpoint).
//     Refresh Access Token (Azure AD Endpoint).

oJsonToken := CreateObject("Chilkat.JsonObject")
nSuccess := oJsonToken:LoadFile("qa_data/tokens/microsoftGraph.json")
IF (nSuccess == 0)
    ? oJsonToken:LastErrorText
    oHttp:destroy()
    oJsonToken:destroy()
    RETURN
ENDIF

oHttp:AuthToken := oJsonToken:StringOf("access_token")

//  To send email, we'll POST to the following endpoint:
//  
//  POST /users/{id | userPrincipalName}/sendMail
//  
//  (The special keyword "me" may be used in place of a principal name.)
//  

//  The body of the POST request will contain the MIME source of the email in base64 format.

//  Create a new email object
oEmail := CreateObject("Chilkat.Email")
oEmail:Subject := "Test Outlook API to Send HTML Email with Attachments"
oEmail:From := "Mary <mary@somewhere.com>"
oEmail:AddTo("Joe", "joe@example.com")

//  Add a plain-text alternative body, which will likely never be seen.
//  (It is shown if the receiving email client is incapable of displaying HTML email.)
oEmail:AddPlainTextAlternativeBody("This is a plain-text alternative body...")

//  Our HTML will include an image, so add the related image here.
cContentIdStarfish := oEmail:AddRelatedFile("qa_data/jpg/starfish.jpg")
IF (oEmail:LastMethodSuccess == 0)
    ? oEmail:LastErrorText
    oHttp:destroy()
    oJsonToken:destroy()
    oEmail:destroy()
    RETURN
ENDIF

//  The src attribute for the image tag is set to the contentIdStarfish:
oSbHtml := CreateObject("Chilkat.StringBuilder")
oSbHtml:Append("<html><body><p>This is an HTML email with an embedded image.</p>")
oSbHtml:Append('<p><img src="cid:CONTENT_ID_STARFISH" /></p></body></html>')
nNumReplacements := oSbHtml:Replace("CONTENT_ID_STARFISH", cContentIdStarfish)

oEmail:AddHtmlAlternativeBody(oSbHtml:GetAsString())

//  Finally, add some attachments to the email.
//  Add a file attachment.
nSuccess := oEmail:AddFileAttachment2("qa_data/pdf/fishing.pdf", "application/pdf")
IF (nSuccess == 0)
    ? oEmail:LastErrorText
    oHttp:destroy()
    oJsonToken:destroy()
    oEmail:destroy()
    oSbHtml:destroy()
    RETURN
ENDIF

//  Add an attachment where the content is contained in a string.
cContent := "This is the content of the 2nd attached file."
oEmail:AddStringAttachment("someText.txt", cContent)

//  Get the email as multi-line base64..
oBdMime := CreateObject("Chilkat.BinData")
oEmail:GetMimeBd(oBdMime)

//  Now get it as multi-line base64
oSbBase64 := CreateObject("Chilkat.StringBuilder")
oBdMime:GetEncodedSb("base64_mime", oSbBase64)

//  Send the HTTP POST (i.e. send the email)
oResp := CreateObject("Chilkat.HttpResponse")
nSuccess := oHttp:HttpSb("POST", "https://graph.microsoft.com/v1.0/me/sendMail", oSbBase64, "utf-8", "text/plain", oResp)
IF (nSuccess == 0)
    ? oHttp:LastErrorText
    oHttp:destroy()
    oJsonToken:destroy()
    oEmail:destroy()
    oSbHtml:destroy()
    oBdMime:destroy()
    oSbBase64:destroy()
    oResp:destroy()
    RETURN
ENDIF

//  The send succeeded if the response status code = 202.
//  In the success case, there is no response body.  (We just get the response code to know that it succeeded.)
IF (oResp:StatusCode != 202)
    oJson := CreateObject("Chilkat.JsonObject")
    oJson:Load(oResp:BodyStr)
    oJson:EmitCompact := 0
    ? oJson:Emit()
    ? "Failed, response status code = " + Str(oResp:StatusCode)
ELSE
    ? "Outlook Mail Sent."
ENDIF

oHttp:destroy()
oJsonToken:destroy()
oEmail:destroy()
oSbHtml:destroy()
oBdMime:destroy()
oSbBase64:destroy()
oResp:destroy()
oJson:destroy()