Customize Email templates
From AutoVM WIKI
To deliver the service instantly after ordering in the AutoVM plugin, first go through the following path in WHMCS admin area:
Setup -> Email Templates
In the Product / Service Messages section, select Dedicated / VPS Server Welcome Email.
Customize the email template such as:
Dear customer, your service specification is as follows:
Plan: {$service_product_name}
URL: http://autovm.yourwebsite.com
Username: {$client_email}
Password: {$service_custom_fields.1}
After entering the panel, click on the Change Operating system option and select one of the existing operating systems.
Then enter a password containing Uppercase, Lowercase, and numbers.
Keep in mind that the launch time for the selected operating system varies from 1 to 10 minutes.