My quickbooks updated and now I cant send emails to customers. Does anyone know how to fix this issue?

Let's team up to get this issue rectified, cory23.

Beforehand, did you encounter any error messages when sending the invoice? This way, we'll be able to check the cause of the issue.

It's always a good practice to review the email address once more to ensure there are no typos, extra spaces, or special characters in the field. 

If you're still unable to send the invoice, clear it and then re-enter your email address to fix this. Here's how:

1. Go to the Gear icon and then select Account and settings.
2. Choose the Company section, then click Edit ✎ in Contact info.
3. 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).
4. Hit  Save, then Done.
5. Send yourself a test transaction.
6. 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).

If the issue persists, remove and re-enter the customer's contact info on their profile using an incognito/private window to start over fresh.

At times, the accumulated site data in the system gets outdated or corrupted causing runtime errors in QBO. Utilizing this mode prevents internet files from being stored, eliminating any potential conflicts. Here are the keyboard shortcuts:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Shift + N

Follow these steps to add their email again:

1. Go to Get paid & pay.
2. Head to the Customers tab.
3. Select the client you want to modify, then hit Edit.
4. Erase the email and click Save.
5. Enter it again, then resend the invoice.

If that works, go back to your regular browser. Next, clear its cache and cookies to get rid of the stored junk files. Switching to other supported web browsers can also help resolve the issue.

Rest assured, the Community is always here to assist you whenever you need support. If you have additional questions or encounter new challenges while completing your other tasks, feel free to reach out to us again by replying below.