In order to send automatic mails via Gmail and Microsoft's Office, the complex steps are made procedural with this library. NOTE: Reqiuires node -v >= 18. Or can be used with --experimental-fetch flag for node -v = 16.

Grant Mails to Send Mail Automatically from Microsoft Office 365 and Gmail

Microsoft Office 365

1. Go to https://portal.azure.com
2. Login as the mail address you will send the mails from (like [email protected])
3. Click on "Manage Azure Active Directory"
4. Click on "App registrations"
5. Click on "New registration"
6. Enter "YOURDOMAIN Automail" as "Name"
7. Select "Accounts in this organizational directory only (YOURDOMAIN only - Single tenant)"
8. Click on "Register"
9. Click on "Certificates & secrets"
10. Click on "New client secret"
11. Enter "YOURDOMAIN Automail" as "Description"
12. Choose maximum expiry date
13. Click on "Add"
14. Copy the value of "Value" and save it in an environment variable (check next block)
15. Click on "Overview"
16. Copy the value of "Application (client) ID" and save it in an environment variable (check next block)
17. Copy the value of "Tenent ID" and save it in an environment variable (check next block)
18. Click on "API permissions"
19. Click on "Add a permission"
20. Click on "Microsoft APIs"
21. Click on "Microsoft Graph"
22. Click on "Application permissions"
23. Click on "Mail.Send"
24. Click on "Add permissions"
25. In an other session, again go to the https://portal.azure.com login as Office 365 admin user for YOURDOMAIN (like [email protected])
26. Follow the same path as above to reach "App registrations"
27. Check all applications tab page
28. Click on "YOURDOMAIN Automail"
29. Click on "API permissions"
30. Click on "Grant admin consent for YOURDOMAIN"
31. Click on "Overview"

Set the variables coming from steps 14, 16, 17

export TAMED_MAILER_OFFICE_FROM_MAIL="[email protected]"
export TAMED_MAILER_OFFICE_CLIENT_SECRET="Coming-From-Step-14-Should-Be-40-Chars--"
export TAMED_MAILER_OFFICE_CLIENT_ID="Comes-From-Step-16-Should-Be-36-Char"
export TAMED_MAILER_OFFICE_TENANT_ID="Comes-From-Step-17-Should-Be-36-Char"

Gmail

1. Go to https://myaccount.google.com/ and login with your user
2. Click the "Security" from left navigation menu
3. Click "2-Step Verification" from the "Signing in to Google" section
4. Follow the instructions to setup 2-Step Verification
5. Go back and click "App passwords" from the "Signing in to Google" section
6. Verify your identity by entering your password
7. Click "Select app" and choose "Mail"
8. Click "Select device" and choose "Other"
9. Enter a name (for example tamed-mailer) for the app password and click "Generate"
10. Copy the generated password and configure it as an environment variable as described in the next section

export TAMED_MAILER_GMAIL_USER="[email protected]" # or "[email protected]"
export TAMED_MAILER_GMAIL_APP_PASSWORD="ComesFromStep-10"
export TAMED_MAILER_GMAIL_SERVICE="Gmail"

Installation

yarn add tamed-mailer

Usage

const { tamedMailer } = require('tamed-mailer');

const gmailFrom = "[email protected]"; // gmail is to automatically convert this to the configured gmail account
const mailTo = "[email protected]";
const mailSubject = "Test Mail Subject";
const textMailContent = "This is a text based test mail.\nLine2\nLine3";
const htmlMailContent = `<span style="color: blue"><h1>This is an HTML based test mail</h1><br>Line2<br>Line3</b></span>`;

let credentials = {
	client_secret: 'OFFICE_CLIENT_SECRET',
	client_id: 'OFFICE_CLIENT_ID',
	tenant_id: 'OFFICE_TENANT_ID',
	from_mail: 'OFFICE_FROM_MAIL',
};
let response = await tamedMailer('office', credentials, mailTo, mailSubject, textMailContent, 'text');

// set scheduledTime to 2 minutes later
let currentTime = new Date();
let scheduledTime = new Date(currentTime.getTime() + 2 * 60000); // Add 2 minutes (2 * 60,000 milliseconds) to the current time
let responseScheduled1 = await tamedMailer('office', credentials, mailTo, mailSubject, htmlMailContent, 'text', scheduledTime);

let credentials2 = {
	user: 'TAMED_MAILER_GMAIL_USER',
	app_password: 'TAMED_MAILER_GMAIL_APP_PASSWORD',
}
let response2 = await tamedMailer('gmail', credentials2, mailTo, mailSubject, textMailContent, 'text');

API

tamedMailer

| Name | Description | |-------|-------------| | p_gmail_or_office | Should be either gmail or office. No other values are allowed. Case sensitive. | | p_credentials | Depends on the value of p_gmail_or_office.If it was 'gmail' then following keys must exist: user, app_password.If it was 'office', then following keys must exist: client_secret, client_id, tenant_id, from_mail. | | p_to | Single reciever of the email. In order to send for multiple reciepents, function must be called multiple times. | | p_subject | Subject line. | | p_body | Body of the mail, depending on p_html_or_text, should be either plain text or an html text. | | p_html_or_text | Should be either html or text. Case sensitive. Dictates how to treat the p_body parameter. | | p_scheduled_time | Optional, only for Office Mails. If provided, the office mail will be sent at the given time. If not provided, the mail will be sent immediately. | | p_save_to_sent_items | Optional, only for Office Mails. If provided, the mail will be saved to the sent items. If not provided, the mail will not be saved to the sent items. |

License

The license is MIT and full text here.

Used Modules

• tick-log license here
• fetch-lean license here
• nodemailer here
• @azure/msal-node license here