EMAILTO COSTUMAR NOT WORKING.

Thanks for reaching out to the Community, @dr.cjbhatt630.

To check if this is a browser-related (cache and cookies) issue, try signing into your QuickBooks Online (QBO) using a private browser (incognito).

Here's how:

• Press Ctrl + Shift + N (Google Chrome).
• Ctrl + Shift + P (Firefox).
• Control + Option + P (Safari).

Once logged in, try to email a transaction(s) to your customer again to double-check.

If it's successful, return to your default browser and perform a clear cache to refresh the system. However, if the issue persists, try using other supported browsers.

For tips and other resources, I recommend visiting our website for reference: Self-help articles.

Please leave a comment below if you have any additional questions. I'm always here to answer them. Have a good one!