Hi, most of the invoices are showing undelivered. Few are delivered, and customers can be able to view them. When I checked all the emails are correct. Kindly suggest ?

hello there, @info1890. Allow me to chime in and get your emails delivered.

If the email address is invalid or there is a brief problem with the recipient's email server, the email bounces or fails to deliver. Verify that each of your customer accounts is linked to the correct email address. To ensure that clients receive their bills and pay you on time. You can follow these steps below to sort out this issue:

Step 1: Check the status of the sent invoice.
 

We are unable to identify which of many recipients the invoice was sent to and failed to reach. This indicates that the status will be Undeliverable if the invoice could not be sent to one of the three recipients. Here’s how to see when the invoice is undelivered to your customer:

1. Go to Sales, then select All Sales or Invoice.
2. In the Status column, you’ll see if the invoice is undelivered or sent.

Step 2: Make sure the customer’s email address is correct.

Ask the customer to check their junk or spam folders if their email address is accurate and they haven't received the invoice. You can also check your email address in QuickBooks Online which might be causing the issue.

1. Go to Customer & leads, then select Customers.
2. Select the customer who didn’t receive the invoice.
3. Select Edit.
4. Check the email address and edit it if needed.
5. Resend the invoice.

Additionally, I am sharing this link that contains trouble shooting tips for undelivered emails: 3 solutions for you when customers aren't receiving your emails

I'm just around if you have other concerns or follow-up inquiries about invoices and other sales transactions in QBO. Take care always.