Delivery server down error

Welcome to the Community space, laura154.

I need more details about the error you encountered. Are you trying to send an invoice or estimate to your customer when you received the delivery server down error? Any information can assist me in determining the best solution to this problem.

When a user attempts to send invoices, a QuickBooks delivery server down error may occur. This sometimes caused by the attachments on your transaction or the configuration of the company email information. Let's do some troubleshooting steps to fix this.

Please ensure the company email and all customer-facing email fields are complete, in the proper format, and do not contain any prefixes.

Wrong: email:mycompany@mycompany.com

Right: mycompany@mycompany.com

Here's how:

1. Go to the Gear icon.
2. Select Accounts and settings.
3. Click the Company tab.
4. Under Contact info section, check if the company and customer-facing email has the correct format.
5. Hit Done.

After that, check that no special characters ((! @ # $ percent & *() _- = +: and ") appear in the following sections:

• Description Field
• Attachment name
• Message field
• Email address
• Custom Form Templates

Also, ensure that the "attach invoice as PDF" option is turned off. I'll show you how.

1. Go to the Gear icon.
2. Select Accounts and settings.
3. Click the Sales tab.
4. Go to the Online Delivery section, then click the Edit pencil icon.
5. Make sure that checkbox against the Attach as PDF is unchecked. If not, uncheck it.
6. Once done, hit Save and then Done.

In addition, you can also control what information your customers see that's important to your business. Check out this article to learn how you do it: Customise invoices, estimates, and sales receipts in QuickBooks Online.

If you need further assistance in QuickBooks Online, leave them in the comments section. I'm determined to assist you in reaching your goals. Have a wonderful day.