eml-analyzer
v1.0.2
Published
A tool to analyse the HTML version of an email message in `.eml` files.
Downloads
25
Readme
eml-analyzer
A tool to analyse the HTML version of an email message in .eml
files.
Install
npm i eml-analyzer
Usage
import * as fs from "fs";
import emlAnalyzer from "eml-analyzer";
let analyzer = new emlAnalyzer("path/to/file.eml");
analyzer.run().then(() => {
let result = analyzer.result;
// print result to console
console.log(result);
// or save as JSON
fs.writeFileSync(`results.json`, JSON.stringify(result, null, 2));
});
Options
| Option | Type | Default | Description | | ----------------------- | ------- | ------- | ----------------------------------------------- | | fetchExternalAssetsSize | Boolean | false | Whether to get the file size of external assets |
let analyzer = new emlAnalyzer("path/to/file.eml", {
fetchExternalAssetsSize: false,
});
Results
The returned results include:
- Size (in bytes)
- of the .eml file
- of each MIME type
- MIME Types
- Subject line
- Character count
- Word count
- Used emojis
- Sender
- The TLD of sender domain
- Subdomain
- Whether the email has attachements
- Language of email message
- HTML
- Tags
- Tag attributes
- MSO conditional comments
- URL protocols used in links
- Structured data
- Whether structured data is used (e.g. Gmail annotations)
- Whether Microsoft Actionable Messages are used
- CSS
- Whether invalid CSS is detected
- CSS properties
- CSS values
- CSS selectors
- CSS rules
- CSS at-rules
- External assets
- Image count
- File formats
- Optional: file sizes of external assets (in bytes)
{
"size": {
"eml": 111062,
"text": 4059,
"html": 96074,
"amp": 0
},
"mimeTypes": {
"text": true,
"html": true,
"amp": false
},
"subject": {
"chars": 25,
"words": 4,
"emojis": [
"❤️🔥"
]
},
"sender": {
"tld": "com",
"subdomain": "",
"government": false,
"education": false
},
"hasAttachments": false,
"language": {
"code": "arb",
"name": "Standard Arabic"
},
"html": {
"urlProtocols": [
"https:"
],
"tags": {
"meta": {
"count": 5
},
"title": {
"count": 1
},
"style": {
"count": 1
},
"center": {
"count": 1
},
"table": {
"count": 5
},
"tbody": {
"count": 5
},
"tr": {
"count": 19
},
"td": {
"count": 22
},
"div": {
"count": 22
},
.
.
.
},
"attributes": [
"charset",
"http-equiv",
"content",
"name",
"type",
"align",
"border",
"cellpadding",
"cellspacing",
"height",
"width",
"id",
"style",
.
.
.
],
"conditionalComments": [
"[if gte mso 9]"
],
"hasStructuredData": false,
"hasMicrosoftActionableMessage": false
},
"css": {
"hasInvalid": false,
"properties": [
"direction",
"border-collapse",
"mso-table-lspace",
"mso-table-rspace",
"-ms-text-size-adjust",
"-webkit-text-size-adjust",
"height",
"margin",
"padding",
"width",
.
.
.
],
"values": [
"rtl",
"collapse",
"0",
"100%",
"exactly",
"9px",
"separate",
"0.5px solid #6E6E6E",
"10px",
"#FFF",
"600px",
"none no-repeat center/cover",
.
.
.
],
"selectors": [
":root",
"img",
"html",
"body",
".gray-box",
".upper-footer",
".lower-footer",
"body,#mainBody",
"p,li,.main-content h5",
.
.
.
],
"rules": [
{
"property": "direction",
"value": "rtl"
},
{
"property": "border-collapse",
"value": "collapse"
},
{
"property": "mso-table-lspace",
"value": "0"
},
{
"property": "height",
"value": "100%"
},
.
.
.
],
"atRules": [
{
"name": "font-face",
"params": ""
},
{
"name": "media",
"params": "(prefers-color-scheme: dark)"
},
{
"name": "media",
"params": "only screen and (max-width: 480px)"
}
]
},
"externalAssets": {
"imageCount": 15,
"formats": [
".png",
".jpeg"
],
"sizes": []
}
}
License
MIT Licensed, see License.md
Credit
Parts of the code has been adopted form other EMC projects and were written by other developers not listed in this repository as contributors.