{customer_username} will be replaced with the user's username,
{customer_name} will be replaced with the user's name,
{customer_email} will be replaced with the user's email,
{customer_phone} will be replaced with the user's phone number,
{order_number} will be replaced with the order number,
{order_amount} will be replaced with the order amount,
{order_currency} will be replaced with the order amount currency,
{order_start_date} will be replaced with the order start date,
{order_next_renewal_date} will be replaced with the next renewal date (update with every invoice paid),
{order_paid_at} will be replaced with the order last payment date (update with every invoice paid),
{order_status} will be replaced with the order Status,
{plan_title} will be replaced with the Plan Name User is Subscribed to,
{plan_price} will be replaced with the Plan Name User is Subscribed to,
{plan_non_discounted_price} will be replaced with the Plan Name User is Subscribed to,
{plan_symbol} will be replaced with the Plan Name User is Subscribed to,
{plan_is_recommended} will be replaced with the Yes/No if Plan is Recommeded or not,
{plan_is_trial} will be replaced with the Yes/No if Plan is trial or not,
{plan_is_lifetime} will be replaced with the Yes/No if Plan is a Lifetime Plan or not,
{plan_is_hidden} will be replaced with the Yes/No if Plan is Hidden Plan or not (A hidden plan is not visible on Website landing page),
{plan_days} will be replaced with the No of days the Plan is valid,
{plan_trial_days} will be replaced with the No of days the Trial Plan is valid (Only avaialable in case if plan_is_trial is Yes),
{plan_messages_limit} will be replaced with the No of Message the Plan has,
{plan_device_limit} will be replaced with the No of Device the Plan has,
{plan_ai_message} will be replaced with the Yes/No if Plan has Ability to send AI Messages or not,
{plan_schedule_message} will be replaced with the Yes/No if Plan has Ability to send Schedule Messages Plan or not,
{plan_bulk_message} will be replaced with the Yes/No if Plan has Ability to send Bulk Messages or not,
{plan_autoreply} will be replaced with the Yes/No if Plan has Ability to send AutoReply Messages or not,
{plan_send_message} will be replaced with the Yes/No if Plan has Ability to send Text Messages or not,
{plan_send_media} will be replaced with the Yes/No if Plan has Ability to send Media Messages(like image,doc etc..) or not,
{plan_send_list} will be replaced with the Yes/No if Plan has Ability to send List Messages or not,
{plan_send_template} will be replaced with the Yes/No if Plan has Ability to send Template Messages or not,
{plan_send_button} will be replaced with the Yes/No if Plan has Ability to send Button Messages or not,
{plan_send_location} will be replaced with the Yes/No if Plan has Ability to send Location Messages or not,
{plan_send_poll} will be replaced with the Yes/No if Plan has Ability to send Poll Messages or not,
{plan_send_sticker} will be replaced with the Yes/No if Plan has Ability to send Sticker Messages or not,
{plan_send_vcard} will be replaced with the Yes/No if Plan has Ability to Send Contact Message or not,
{plan_webhook} will be replaced with the Yes/No if Plan has Webhooks Enable or not,
{plan_api} will be replaced with the Yes/No if Plan has Api Enable or not,
{plan_shopify_store} will be replaced with the No of Shopify Stores User can create in a Plan,
{plan_shopify_store_templates} will be replaced with the Yes/No if Plan has Ability to Modify Shopify Store Message Templates,
{plan_wordpress_store} will be replaced with the No of Wordpress Stores User can create in a Plan,
{plan_wordpress_store_templates} will be replaced with the Yes/No if Plan has Ability to Modify Wordpress Store Message Templates,
{invoice_number} will be replaced with the invoice number,
{invoice_date} will be replaced with the invoice creation Date,
{invoice_due_date} will be replaced with the invoice creation Date,
{invoice_amount} will be replaced with the invoice Amount,
{invoice_currency} will be replaced with the invoice Amount Currency,
{invoice_paid_at} will be replaced with the invoice Paid Date and Time (Empty for Unpaid),
{invoice_status} will be replaced with the invoice Status,
{site_name} will be replaced with the website name.
{site_domain} will be replaced with the website Domain where application is hosted.
{site_email_1} will be replaced with the website email 1.
{site_email_2} will be replaced with the website email 2.
{site_email_3} will be replaced with the website email 3.
{site_email_4} will be replaced with the website email 4.
{site_phone_1} will be replaced with the website Phone No 1.
{site_phone_2} will be replaced with the website Phone No 2.
{site_phone_3} will be replaced with the website Phone No 3.
{site_phone_4} will be replaced with the website Phone No 4.
{site_phone_whatsapp} will be replaced with the website Whatsapp Phone No.
Note: In Order Creation and Updation Invoice short codes are no available