RocketChat/Rocket.Chat

import { Users } from '@rocket.chat/models';
import { Meteor } from 'meteor/meteor';

import * as Mailer from '../../app/mailer/server/api';
import { settings } from '../../app/settings/server';
import { isSMTPConfigured } from '../../app/utils/server/functions/isSMTPConfigured';

export async function sendWelcomeEmail(to: string): Promise<void> {
    if (!isSMTPConfigured()) {
        throw new Meteor.Error('error-email-send-failed', 'SMTP is not configured', {
            method: 'sendWelcomeEmail',
        });
    }

    const email = to.trim();

    const user = await Users.findOneByEmailAddress(email, { projection: { _id: 1 } });

    if (!user) {
        throw new Meteor.Error('error-invalid-user', 'Invalid user', {
            method: 'sendWelcomeEmail',
        });
    }

    try {
        let html = '';
        Mailer.getTemplate('Accounts_UserAddedEmail_Email', (template) => {
            html = template;
        });

        await Mailer.send({
            to: email,
            from: settings.get('From_Email'),
            subject: settings.get('Accounts_UserAddedEmail_Subject'),
            html,
        });
    } catch (error: any) {
        throw new Meteor.Error('error-email-send-failed', `Error trying to send email: ${error.message}`, {
            method: 'sendWelcomeEmail',
            message: error.message,
        });
    }
}