Skip to main content

Get 50% OFF QuickBooks for 3 months*

Buy now
Switch to QuickBooks and 70% off for 3 Months
October 14, 2025
Question

Does anyone else have constant problems with emails being undeliverable? One month all my voices are sent out just fine, the next month half of them are undeliverable

  • October 14, 2025
  • 1 reply
  • 11 views
No text available

1 reply

October 19, 2025

Yes — you're definitely not alone. Many users of QuickBooks Online (QBO) have reported intermittent issues with invoice emails being marked as undeliverable or not reaching clients, and this seems to be a recurring issue, especially around:

  • Changes in QuickBooks' email server IPs

  • Tightened spam filter rules by recipient mail servers (like Gmail, Outlook)

  • Missing or misconfigured sender domain settings (SPF, DKIM, DMARC)

  • Clients accidentally marking previous emails as spam

Asha Kanta Sharma
QuickBooks Team
October 28, 2025

I understand your sentiment about the recurring email delivery issues, Ssullc.

 

I recommend contacting the QuickBooks Online live support team. Email delivery issues can arise from various factors, and our phone support may offer specific guidance tailored to your situation.

 

Here’s how you can reach them:

 

  1. Go to the (?) Help icon in the upper right corner.
  2. Select the Search tab and hit Contact Us.
  3. Click the Ask about something else tab.
  4. Type in your concern and hit Continue.
  5. Choose a way to connect with us:
    • Have us call you - Get a call from a support expert.
    • Chat with us - Start a conversation with a support expert.

 

Check out their support hours to determine their availability.

 

If you have any follow-up questions, please feel free to leave a comment below.