Good day, @SylvieBarredo.

I'll share some insights about sending invoices in QuickBooks Self-Employed (QBSE).

Once you send invoices to your customers, QuickBooks is the one that delivers them. This is the reason why it shows as the sender of the transaction. 

The name of your company will show as the subject of the email. Once your customers open it, they can easily identify it using your company's name. 

To get more details about sending invoices, you can check out this article: How to add products and services to an invoice and send it to your customers.

Moreover, you can set up online payments so customers can pay for their invoices electronically. 

Please let me know if you have any further questions or other QuickBooks-related concerns. I'll be here to help you. Have a great weekend.