When we are unable to send an email using QuickBooks. Then we've got to update QuickBooks to the newest version. Then reset the settings of webmail and check the email credentials. This way you get to resolve the QuickBooks couldn't connect with the e-mail server. Once you are using QuickBooks Desktop and accessing its webmail, we've to face an error when getting into your user email Id and password, which says that “Couldn’t connect to an Email server. We were unable to connect to the email server for your email provider”. QuickBooks not connecting to an email server is a simple problem that can be handled. Let see in this article are the causes and solutions for QuickBooks could not connect to the email server.
Causes Behind the QuickBooks Could not Connect to the Email Server
There are so many reasons behind this error, some of them are listed below:
Firstly check your net connection as a result of if the network association is poor, then this error comes out.
If you entered the incorrect ID and password
Settings of the e-mail Server are incorrect.
Check if your QuickBooks software is out-of-date and wishes to be updated.
If the setting is wrong, then net explorers may hamper QuickBooks connection with the e-mail server.
QuickBooks Couldn’t connect with the e-mail Server, an error happens once you log in into your system and you don’t have admin credentials.
Damaged or corrupt Email application.
Damage information associated with QuickBooks.
Solution to fix QuickBooks could not connect the Email Server Error
Here are some solutions that will show you how to fix the error, QuickBooks could not connect to the Email Server:
Solution1: Update to the Latest Version.
First, visit the website to update to the latest version .
Download the Update file, select the Update button .
Agree to all the conditions and QuickBooks will start updating.
Restart the system and check the update.
Solution 2: Reset your Web Mail and verify setting
First, open QuickBooks edit menu
Then select the send forms option on the left pane menu.
Choose the email account which you want to use and press the edit button .
After that, open the edit email information window and navigate to the SMTP server area and reset the server name .
Solution 3: Change the Internet Setting to the default option
First, open the Internet Explorer and then open the tools menu .
Choose the Internet option.
Then, go to the Advance Setting tab and select the Restore setting option.
Choose Ok, then close the browser .
After following the above steps, It is clear that the error came because of some violation of Anti Virus. In such situations, It is always better to have a consultation with an IT person or Anti Virus provider to ask for help. After the above three listed solutions, if you are still facing the same issue again, then you can perform the following solutions according to the error message:

Error Message
Solution
Internet is not connected or the firewall is blocking the connection
You need to open Internet Explorer and access the website
Providing the incorrect email address or password
Try Logging in through a web browser and check if the email and passwords are working fine and they are correct
Email server settings are not configured properly
Check if you have the correct settings configured

Solution 4: Anti-virus software blocking the QuickBooks access
Check our Anti-virus setting to make sure that it’s not blocking the QuickBooks access and also ensure to turn off the email filtering advantages if they are available.
Solution 5: The email credentials
This issue arises when the user enters the wrong username and password. Open and check your web browser and then log in to your email address and enter your username and password. If they don’t work then you have to reach your email provider to reset the login credentials.
Solution 6: Renaming the network data files (.ND)
First, close your QuickBooks application.
Then,open the file location and search for .ND files.
Select the File and press the F2 key to rename the file.
User has to add OLD before the file name.
Follow all the instructions and click ok.
Solution 7: QuickBooks Database Server Manager
Open the search bar in the window.
Then write QuickBooks Database Server Manager in the search box.
Then delete all pre-existing folders.
Now, you have to add the QuickBooks File Folder in the Database manager
Then, scan that folder and make notes of all errors in the QuickBooks Database server manager.
Solution 8 : Validate your QuickBooks Desktop File Hosting
Hosting services sometimes create conflict issues between the QuickBooks server and workstation. With these following steps, get rid of these problematic issues.
Step 1: Turn off hosting
Open your QuickBooks menu and then choose the utilities.
Now, you have to choose Stop Hosting Multi-user access.
Then click yes.
Step 2: Turn on Hosting
Open the Window Task Manager.
Click on the More Details option of the task window manager
Open your services and click on the QBDBMgrN.exe from the list-menu
Then, start the service and then choose the Automatic Start option.