Why is the accounting software not sending emails to my customers?

If your accounting software is not sending emails to your customers as expected, there could be various reasons for this issue. To troubleshoot and address the problem, consider the following potential causes and solutions:
 Step 1 : Double-check and ensure that your email settings, including the SMTP server, port, and authentication credentials (username and password), are correctly configured in the accounting software.
 Step 2 : Verify that your computer has a stable and active internet connection. Slow or intermittent connections can lead to email delivery problems.
 Step 3 :Check the SMTP server settings within your accounting software and confirm that they are accurate and allow for sending emails. 
 Step 4 : Verify that the email account credentials (username and password) are accurate. 
 Step 5 ; Check the size of the email attachment you are trying to send. If it exceeds the attachment size limit, consider compressing the file or using a file-sharing service.
 Step 6 :Temporarily disable your firewall or security software to see if it's causing the issue.
 Step 7 : Ask your customers to check their spam or junk folders for the emails. Advise them to mark emails from your domain as Not Spam to improve email deliverability.