(DataFlex) Convert HTML String to Email with Embedded Images

Converts an HTML string into an email with embedded images and sends. The HTML image may contain IMG tags with SRC attributes referencing images on the local filesystem or on the Web. The MHT component will gather all referenced images, style sheets, etc. regardless of whether they are located on the filesystem or the Web via an http or https URL.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
Handle hoMailman
Handle hoMht
Variant vEmail
Handle hoEmail
String sMime
Boolean iSuccess
String sTemp1

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

Get Create (RefClass(cComChilkatMailMan)) To hoMailman
If (Not(IsComObjectCreated(hoMailman))) Begin
Send CreateComObject of hoMailman
End

// The MHT component can be used to convert an HTML page
// from a URL, file, or in-memory HTML into an email
// with embedded images and style sheets.
Get Create (RefClass(cComChilkatMht)) To hoMht
If (Not(IsComObjectCreated(hoMht))) Begin
Send CreateComObject of hoMht
End

// There are two ways of embedding images in emails: with CIDs
// and without. When using CIDs, the IMG SRC attributes use
// urls that begin with "cid:" and the corresponding image
// embedded within the email includes a Content-ID header field.
// When not using CIDs, the IMG SRC attribute can have a URL,
// path, etc. and the corresponding image embedded within
// the email has a matching Content-Location header field.

// When testing with GMail, if CIDs are used the email will
// be displayed with images blocked (by default) unless
// the user allows them to be displayed. Without CIDs,
// the images are automatically displayed.

// When testing with Eudora, Mozilla Thunderbird, and Outlook Express,
// embedded images display correctly with our without CIDs.

// When testing with Yahoo! Mail, embedded images display OK.
// However, the Yahoo! Mail user has the option of blocking
// images. If this is turned on, the CID images will still
// display correctly even though images are blocked. Why?
// It's because when viewing the email there is no external
// HTTP request to fetch an image. Therefore, a spammer
// cannot get an indication that you've read the email.
// However, if CIDs are not used, the images are blocked by
// any Yahoo! Mail user that has image blocking turned on --
// even though the images are embedded.

// I haven't tested Hotmail yet...
// Regardless, there is no perfect solution. If CIDs are used,
// GMail users may block your embedded images, if CIDs are not
// used, Yahoo! Mail users may block your embedded images.

// I recommend setting using CIDs. This is what Mozilla Thunderbird
// does by default, and it's the more clear an unambiguous way
// to indicate that images are indeed embedded.
Set ComUseCids Of hoMht To True

// Create an email from an HTML file.
// Call mht.HtmlToEML to get the MIME source of an email,
// then load it into an email object.
Get Create (RefClass(cComChilkatEmail)) To hoEmail
If (Not(IsComObjectCreated(hoEmail))) Begin
Send CreateComObject of hoEmail
End

Get ComHtmlToEML Of hoMht '<html><body><p><b>Test Email</b><br><img src="http://www.chilkatsoft.com/images/dude.gif"></body></html>' To sMime
Get ComSetFromMimeText Of hoEmail sMime To iSuccess

Set ComSubject Of hoEmail To "Test HTML email"

// This example is tested in:
// Outlook 2000, Eudora 7, Mozilla Thunderbird 1.5.0.9, Outlook Express 6, GMail, Yahoo Mail
Get ComAddTo Of hoEmail "Chilkat Support" "support@chilkatsoft.com" To iSuccess

// Note: Chilkat does not regularly check our GMail and Yahoo
// email accounts. Please send support email to support@chilkatsoft.com
Get ComAddTo Of hoEmail "Chilkat on Yahoo" "chilkat_software@yahoo.com" To iSuccess
Get ComAddTo Of hoEmail "Chilkat on GMail" "chilkat.support@gmail.com" To iSuccess

Set ComFrom Of hoEmail To "chilkat@live.com"

// Send email using smtp.live.com
Set ComSmtpHost Of hoMailman To "smtp.live.com"
Set ComSmtpUsername Of hoMailman To "chilkat@live.com"
Set ComSmtpPassword Of hoMailman To "myPassword"
Set ComSmtpPort Of hoMailman To 587
Set ComStartTLS Of hoMailman To True

// Send the email.
Get pvComObject of hoEmail to vEmail
Get ComSendEmail Of hoMailman vEmail To iSuccess
If (iSuccess <> True) Begin
Get ComLastErrorText Of hoMailman To sTemp1
Showln sTemp1
Procedure_Return
End

Showln "HTML Email Sent!"

End_Procedure