Key takeaways
- Delivery issue, Sent, and Viewed provide different clues; none confirms that the person approving payment has the bill.
- Correct recipient details, investigate spam or quarantine, and ask the billing contact to confirm a resend.
- Use a paper copy when another route is useful, and label it as the same invoice to avoid duplicate entry.
- First-Class Mail adds a second channel, but it does not guarantee tracking or proof of receipt.
If QuickBooks invoices are going to spam—or a customer says the invoice never arrived—check the invoice status and recipient address first. A missing payment alone does not tell you whether the message bounced, landed in spam, or reached the wrong person.
This guide covers QuickBooks Online. Use the checks below to find the next action, confirm a resend with the customer, and decide whether an important invoice needs a paper copy. QuickBooks Desktop has different email settings.
Quick answer: Delivery issue means a send failed for at least one recipient. Sent records a send, not inbox placement. Viewed records an invoice view, not payment or confirmation by the person who approves the bill. Correct errors, check spam, then verify the customer can find the invoice before treating the problem as resolved.
Start with the QuickBooks invoice status#
In QuickBooks Online, open All apps → Sales & Get Paid → Invoices and check the Status column. Select the invoice for details. Intuit explains the invoice statuses (opens in new tab); labels and navigation can vary by version.
QuickBooks status | What it tells you | What to do next |
|---|---|---|
Delivery issue | The email did not reach at least one recipient | Check each recipient address, correct any error, and resend |
Sent, not viewed | QuickBooks recorded a send, but no invoice view is recorded | Confirm the billing contact, check spam or quarantine, and verify a resend |
Viewed, unpaid | QuickBooks recorded that the invoice was opened | Confirm the correct billing contact has it, then ask about approval or payment |
If an invoice has several recipients, a Delivery issue does not identify which recipient failed. Check every address, including CC and BCC. A Viewed status does not identify the person handling payment or establish proof of receipt. Ask for confirmation instead of assuming an unpaid bill was ignored. See Intuit’s delivery-issue guidance (opens in new tab).
Try these five fixes#
1. Check the customer’s email address#
Compare every recipient address on the invoice with a recent message from the customer. Confirm who handles accounts payable and whether they require a shared billing inbox or vendor portal. Correct the customer record and check the addresses again before resending the existing invoice.
2. Check your company email#
If the addresses are correct but messages still disappear, follow Intuit’s troubleshooting guidance (opens in new tab). Under Settings → Account and settings → Company, edit Contact info, clear and re-enter Company email without extra spaces, then select Save and Done.
Intuit recommends sending yourself a test transaction and trying an address on another email domain if it does not arrive. Use an inbox you control and a non-sensitive test transaction under your normal bookkeeping procedure; do not send a customer’s invoice to a personal test address. Finding the test in your inbox checks that route only—it does not confirm delivery to the customer.
3. Ask the customer to check spam or quarantine#
Ask the customer to search for your business name and check junk, spam, and any quarantine their email system provides. Confirm the invoice through a phone number or conversation they already trust before asking them to release it or mark it as not spam. Do not ask them to disable filtering or open an unexpected payment link.
A customer follow-up you can copy#
Hi [name], I sent invoice [reference] from [business] on [date], but it sounds like it has not reached you. Could you confirm the best billing email or submission route? Please check junk or spam for our business name. If the message looks unfamiliar, call me on the number you already have for us before opening it. I can resend a copy through our usual channel. Please let me know when you can see the invoice.
4. Resend it from an address they recognize#
Intuit’s sending guide (opens in new tab) supports a connected Gmail address: on the send screen, use From → Add Gmail address if the option is available. Only one Gmail address can be connected. Review the requested permission to send email on your behalf; anyone with permission to send invoices from that QuickBooks account can use the connected address. Intuit notes feature limits for Free and Lite plans. A different sender does not guarantee inbox placement.
Alternatively, download the existing invoice as a PDF and send it from the business address the customer already knows. Intuit’s download guide (opens in new tab) explains the new and old invoice layouts. Review the PDF, recipient, and payment instructions before sending; keep the same invoice reference so the copy is not mistaken for a new charge.
After the resend, ask the billing contact to confirm they can find and open the invoice. Note the date, channel, and response in your billing records. A copy sent outside QuickBooks may not appear in its email-view history; continue tracking the balance and recording payments in your accounting system.
If you also need a paper copy, Postmarkr can print and mail the exported PDF as a First-Class letter after you review the document and recipient address. This is a separate mailing workflow: it does not send the invoice email or reconcile payment in QuickBooks. Available postal scan updates are not proof that the billing contact received the invoice.
5. Involve the customer’s IT team when the problem repeats#
If invoices repeatedly disappear, ask the email administrator to investigate before changing settings. Intuit publishes current mail-server hostnames and IP addresses in its troubleshooting guide (opens in new tab). Let the administrator check which settings apply to the affected mail route; an owner should not add DNS records or broadly bypass security filtering based on a missing invoice.
An IT escalation note you can copy#
We are investigating a missing QuickBooks Online invoice email sent on [date and time, including time zone] to [billing address]. The recorded status is [status]. Can you check message trace and quarantine for that recipient and time, and tell us whether the message was accepted, rejected, or filtered? Please review Intuit’s current troubleshooting guidance before deciding whether a narrowly scoped mail setting needs changing. We can supply the sender address or message headers through your approved support channel.
Share only the information needed to locate the message. Invoice attachments, payment details, and full message headers can contain sensitive information. If the administrator finds no explanation or the issue affects several customers, contact QuickBooks support from your signed-in account with the send time, status, and troubleshooting results.
What an unseen invoice costs#
The expense is not the email. It is the uncertainty: delayed cash, less reliable forecasts, and extra calls, resends, and reconciliation. Your delivery plan should match the consequence of a miss.
When to add a paper copy#
For an important invoice, use email plus paper, not email versus paper. Email keeps the payment link and speed. Paper gives the customer another way to see the bill. See how to mail a paper copy from QuickBooks Online.
Situation | Sensible channel plan |
|---|---|
Repeat customer who reliably views and pays | Email |
Delivery issue | Correct the address and resend before changing channels |
Sent but not viewed, and timing matters | Resend directly, contact the customer, and mail a copy if the silence continues |
New customer, prior delivery trouble, or payment critical to cash flow | Send electronically and mail a paper copy from the start |
Contract or law requires evidence | Choose the USPS service that supplies the required record; ordinary First-Class Mail may not be enough |
Set the threshold around business impact, not an arbitrary amount. If a delay would disrupt payroll, purchasing, or a project, one inbox is unnecessary risk.
For broader channel economics, see the mailed-versus-emailed invoice comparison. If the balance is already late, use a clear past-due invoice letter.
Know what the mailing record proves#
Paper is not automatically proof of delivery. Choose the service based on the record you need.
Mailing option | What it gives you | Available through Postmarkr today? |
|---|---|---|
First-Class letter | A second physical channel; no guaranteed tracking or proof of receipt | Yes |
Certificate of Mailing | A USPS-stamped record showing when you mailed the item; no delivery record | No |
Certified Mail | A mailing receipt and, upon request, verification of delivery or attempted delivery | No |
For a paper backup, keep the invoice reference and payment instructions consistent with the electronic copy. Confirm the postal billing address and tell the customer it is a copy of the same invoice, so accounts payable does not enter it twice.
Keep the mailing record alongside your customer follow-up. Processing milestones and available postal scan updates do not establish that the person responsible for payment received or read the bill.
For the document preparation steps, use the complete guide to invoice printing and mailing.
Finish with a confirmed route for the invoice: the correct billing contact, a copy they can find, and a recorded next step for payment. Keep email or postal status separate from that confirmation. If there is still no response, follow your normal past-due process rather than repeatedly sending the same message.