Your billing manager just closed the month and has 47 invoices ready to email. In standard Odoo she clicks Send by Email 47 times, waits for each modal, confirms each template, and repeats. Fifteen minutes vanish. Batch Invoice Sender collapses that ritual into one selection and one click. Choose any invoices from your list view, hit Send All, and the addon queues every email respecting each customer's language, template, and CC preferences. No modals. No repetition. Invoices that normally take 20 seconds each now take zero attention. A mid-sized distributor sending 200 invoices monthly saves 60 minutes per close cycle. Install it once and reclaim an hour every month.