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Troubleshoot if customers aren't receiving emails from QuickBooks Online
Are your customers not receiving your invoices, sales receipts, estimates, statements, or reports via email? Here are three possible reasons why, and how you can fix the problem.
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Solution 1: Reset your email address
If you recently imported QuickBooks Desktop data into a QuickBooks Online company, you may need to reset your email address:
Sign in to your QuickBooks Online account.
Go to Settings
and select Account and settings.Go to the Company section, then select Edit ✎ in Contact info.
Review each email address and make changes as needed.
Select Save, then Done.
Solution 2: Clear and re-enter your email address
If solution 1 doesn't apply, ask your customers to check their junk mail and spam folders. If the email is still not found, clear it and then re-enter your email address.
Go to Settings
and select Account and settings.Go to the Company section, then select Edit ✎ in Contact info.
Clear the Company email field and enter the desired address as is, even if it appears correct. (Note: Be sure not to use any extra characters or spaces before, within, or after the address you enter).
Select Save, then Done.
Send yourself a test transaction.
If you still don't receive the email, try 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).
Solution 3: Configure server to accept QuickBooks Online mail server host names and IP addresses
If the first two solutions don't work, ask an IT expert to help you with the following solution. The IT expert needs to add the QuickBooks Online mail server host names and IP addresses to your outgoing mail servers allow list. This is so your QuickBooks emails aren't mistakenly marked as spam.
The steps to add the host names and IP addresses depend on your email setup. Below is a list of Host Names and IP addresses your IT expert needs to add to your allowlist.
Server Hostname
o1.sg.n.intuit.com
o2.sg.n.intuit.com
o3.sg.n.intuit.com
o4.sg.n.intuit.com
o5.sg.n.intuit.com
mailout1b.intuit.com
mailout2b.intuit.com
mailout3b.intuit.com
mailout4b.intuit.com
mailout1a.intuit.com
mailout2a.intuit.com
mailout3a.intuit.com
mailout4a.intuit.com
mailout5a.intuit.com
mailout11.intuit.com
mailout12.intuit.com
mailout13.intuit.com
mailout14.intuit.com
mailout21.intuit.com
mailout22.intuit.com
mailout23.intuit.com
mailout24.intuit.com
mailout101.intuit.com
mailout102.intuit.com
mailout103.intuit.com
mailout104.intuit.com
mailout201.intuit.com
mailout202.intuit.com
mailout203.intuit.com
mailout204.intuit.com
lvmailout01.intuit.com
lvmailout02.intuit.com
lvmailout03.intuit.com
lvmailappout10.intuit.com
lvmailappout11.intuit.com
lvmailappout12.intuit.com
lvmailappout13.intuit.com
lvmailappout20.intuit.com
lvmailappout21.intuit.com
lvmailappout22.intuit.com
lvmailappout23.intuit.com
IP Address
69.169.238.234
69.169.238.235
168.245.76.26
168.245.70.213
168.245.123.49
168.245.118.60
198.37.158.59
199.16.139.16
199.16.139.17
199.16.139.18
199.16.139.20
199.16.139.21
199.16.139.22
199.16.139.23
199.16.139.24
199.16.139.25
199.16.139.26
199.16.139.27
206.108.40.7
206.108.40.8
206.108.40.9
206.108.40.10
206.108.40.11
206.108.40.12
206.108.40.13
206.108.40.14
206.108.40.15
206.108.40.16
206.108.40.17
206.108.40.18
206.108.40.28
206.108.40.89
206.108.40.90
206.108.40.92
206.108.40.92
206.154.105.172
206.154.105.173
206.154.105.174
206.154.105.175
206.154.105.176
206.154.105.177
206.154.105.178
206.154.105.179
If you need to specify a subnet mask, you can use 255.255.255.255
Now your customers can receive your emails from QuickBooks.
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