Visual Basic 6.0
SendGrid HTML Email with Embedded Images

Demonstrates how to send an HTML email with embedded images using SendGrid.
Chilkat Visual Basic 6.0 Downloads

Visual Basic 6.0
Dim success As Long
success = 0

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

Dim req As New ChilkatHttpRequest
Dim http As New ChilkatHttp

' First.. load a JPG file and build an HTML img tag with the JPG data inline encoded.
' Our HTML img tag will look like this:
' <img src="data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEA3ADcAA..." alt="" style="border-width:0px;" />
Dim bdJpg As New ChilkatBinData
success = bdJpg.LoadFile("qa_data/jpg/starfish.jpg")
If (success = 0) Then
    Debug.Print "Failed to load JPG file."
    Exit Sub
End If

' Note: HTML containing embedded base64 image data may not be visible in all email clients.
' For example, GMail might not display the image, but viewing in Outlook might be OK.
Dim sbHtml As New ChilkatStringBuilder
success = sbHtml.Append("<html><body><b>This is a test<b><br /><img src=""data:image/jpeg;base64,")
' Append the base64 image data to sbHtml.
success = bdJpg.GetEncodedSb("base64",sbHtml)
success = sbHtml.Append(""" alt="""" style=""border-width:0px;"" /></body></html>")

Dim json As New ChilkatJsonObject
success = json.UpdateString("personalizations[0].to[0].email","matt@chilkat.io")
success = json.UpdateString("personalizations[0].to[0].name","Matt")
success = json.UpdateString("from.email","admin@chilkatsoft.com")
success = json.UpdateString("subject","Test HTML email with images")
success = json.UpdateString("content[0].type","text/html")
success = json.UpdateSb("content[0].value",sbHtml)

http.AuthToken = "SENDGRID_API_KEY"

Dim resp As New ChilkatHttpResponse
success = http.HttpJson("POST","https://api.sendgrid.com/v3/mail/send",json,"application/json",resp)
If (success = 0) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Debug.Print "response status code: " & resp.StatusCode
' 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.)
Debug.Print resp.BodyStr