The invoice that arrives from your own address goes into the customer’s supplier folder. The one from a service goes into promotions.
Larger customers file by sender. Their accounts team has a rule, a folder or a shared mailbox for each supplier, and mail from an unrecognised address falls outside all of it — which is how an invoice ends up unpaid without anybody refusing it.
Sending from your own address puts your mail where their process expects to find it, and makes a reply land with you rather than with a service that cannot answer.
The business address you want mail sent from.
A bill, a statement, a receipt.
In the folder their process already uses.
Not into a service nobody reads.
The app itself, wherever you use it: Android, iOS, the browser and Windows, kept in step so a bill raised on the counter phone is on the office laptop a moment later. The language, the notifications and the work that runs in the background live here too.
You notice this area when you switch devices, hand the phone to a staff member who reads another language, or expect a reminder to have gone out while the app was closed.
The other channel customers are reached on.
Business customers file and filter by sender. Mail from an unfamiliar address is the mail that goes unnoticed.
The documents you already share — bills, statements and receipts.
To your own address, since that is what the mail was sent from.
Unpaid is sometimes just unfiled — and filing is done by sender.