The Google Script extracts the content of a Google Documents, converts the styles as inline CSS using the MailChimp API and send the document via Gmail as HTML Mail.
/* Credit: https://gist.github.com/erickoledadevrel/11143648 */
/**
* Sends an email using the contents of a Google Document as the body.
*/
function sendDocument(documentId, recipient, subject) {
var html = convertToHtml(documentId);
html = inlineCss(html);
GmailApp.sendEmail(recipient, subject, null, {
htmlBody: html
});
}
/**
* Converts a file to HTML. The Advanced Drive service must be enabled to use
* this function.
*/
function convertToHtml(fileId) {
var file = Drive.Files.get(fileId);
var htmlExportLink = file.exportLinks['text/html'];
if (!htmlExportLink) {
throw 'File cannot be converted to HTML.';
}
var oAuthToken = ScriptApp.getOAuthToken();
var response = UrlFetchApp.fetch(htmlExportLink, {
headers:{
'Authorization': 'Bearer ' + oAuthToken
},
muteHttpExceptions: true
});
if (!response.getResponseCode() == 200) {
throw 'Error converting to HTML: ' + response.getContentText();
}
return response.getContentText();
}
/**
* Inlines CSS within an HTML file using the MailChimp API. To use the API you must
* register for an account and then copy your API key into the script property
* "mailchimp.apikey". See here for information on how to find your API key:
* http://kb.mailchimp.com/article/where-can-i-find-my-api-key/.
*/
function inlineCss(html) {
var apikey = CacheService.getPublicCache().get('mailchimp.apikey');
if (!apikey) {
apikey = PropertiesService.getScriptProperties().getProperty('mailchimp.apikey');
CacheService.getPublicCache().put('mailchimp.apikey', apikey);
}
var datacenter = apikey.split('-')[1];
var url = Utilities.formatString('https://%s.api.mailchimp.com/2.0/helper/inline-css', datacenter);
var response = UrlFetchApp.fetch(url, {
method: 'post',
payload: {
apikey: apikey,
html: html,
strip_css: true
}
});
var output = JSON.parse(response.getContentText());
if (!response.getResponseCode() == 200) {
throw 'Error inlining CSS: ' + output['error'];
}
return output['html'];
}