(PHP Extension) Outlook Send Email using MIME Format

See more Outlook Examples

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

For more information, see https://learn.microsoft.com/en-us/graph/api/user-sendmail?view=graph-rest-1.0&tabs=http#example-4-send-a-new-message-using-mime-format

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PHP Extension for Windows, Linux, MacOS,
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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$http = new CkHttp();

// 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).

$jsonToken = new CkJsonObject();
$success = $jsonToken->LoadFile('qa_data/tokens/microsoftGraph.json');
if ($success == false) {
    print $jsonToken->lastErrorText() . "\n";
    exit;
}

$http->put_AuthToken($jsonToken->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
$email = new CkEmail();
$email->put_Subject('Test Outlook API to Send HTML Email with Attachments');
$email->put_From('Mary <mary@somewhere.com>');
$email->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.)
$email->AddPlainTextAlternativeBody('This is a plain-text alternative body...');

// Our HTML will include an image, so add the related image here.
$contentIdStarfish = $email->addRelatedFile('qa_data/jpg/starfish.jpg');
if ($email->get_LastMethodSuccess() != true) {
    print $email->lastErrorText() . "\n";
    exit;
}

// The src attribute for the image tag is set to the contentIdStarfish:
$sbHtml = new CkStringBuilder();
$sbHtml->Append('<html><body><p>This is an HTML email with an embedded image.</p>');
$sbHtml->Append('<p><img src=\'cid:CONTENT_ID_STARFISH\' /></p></body></html>');
$numReplacements = $sbHtml->Replace('CONTENT_ID_STARFISH',$contentIdStarfish);

$email->AddHtmlAlternativeBody($sbHtml->getAsString());

// Finally, add some attachments to the email.
// Add a file attachment.
$success = $email->AddFileAttachment2('qa_data/pdf/fishing.pdf','application/pdf');
if ($success != true) {
    print $email->lastErrorText() . "\n";
    exit;
}

// Add an attachment where the content is contained in a string.
$content = 'This is the content of the 2nd attached file.';
$email->AddStringAttachment('someText.txt',$content);

// Get the email as multi-line base64..
$bdMime = new CkBinData();
$email->GetMimeBd($bdMime);

// Now get it as multi-line base64
$sbBase64 = new CkStringBuilder();
$bdMime->GetEncodedSb('base64_mime',$sbBase64);

// Send the HTTP POST (i.e. send the email)
// resp is a CkHttpResponse
$resp = $http->PTextSb('POST','https://graph.microsoft.com/v1.0/me/sendMail',$sbBase64,'utf-8','text/plain',false,false);
if ($http->get_LastMethodSuccess() != true) {
    print $http->lastErrorText() . "\n";
    exit;
}

// 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 ($resp->get_StatusCode() != 202) {
    $json = new CkJsonObject();
    $json->Load($resp->bodyStr());
    $json->put_EmitCompact(false);
    print $json->emit() . "\n";
    print 'Failed, response status code = ' . $resp->get_StatusCode() . "\n";
}
else {
    print 'Outlook Mail Sent.' . "\n";
}


?>