I appreciate you bringing this to our attention, @cesar14. Let me share some troubleshooting steps to ensure you can send invoices efficiently.
There are possible reasons why you and your clients don't receive the email. It could be that the emails might have been marked as spam, or the internet service or domain provider blocks email addresses. To verify, ask your customers to check their junk or spam folders. If they don't see it, clear and re-enter your email address in the QuickBooks settings to refresh the system.
- From the Gear icon, select Account and Settings.
- Select the Company tab at the left pane and tick the Pencil icon in the Contact Info section.
- Remove the email address, then re-enter it.
- Hit Save and Done.
Once done, send yourself a test invoice to check if it works. If the email still doesn't appear, there may be some security settings that need to be set in your email server as well as your clients. I suggest verifying with a service provider to evaluate your options or using a different email address that has a different domain. (For instance, if you were using a Gmail email address, try a Hotmail or Yahoo address instead).
For additional reference, I've attached these articles you can use to make sure you receive important messages from Intuit, as well as how to let your customers pay their invoices online:
I'll be in the Community space if you have follow-up questions about sending invoices to clients. Just hit the reply button and I'll make sure to answer them for you.
