It is easy to use, only 3 steps:

# Step 1

Click <Import> button on the toolbar to import your email addresses (csv, txt, xls, xlsx).

# Step 2

Click <Check> button to perform a complete check.

# Step 3

Click <Export> button to get the correct and available email addresses, or refer to the results to maintain your existing files.

Note: there is an important option needs to pay attention: "Maximum Number of Checking Threads". The default value is 19, and the scope is 1~99, but it is not the bigger the better, you may need to fine tune it to the best value according to your network conditions.
Windows XP/2003/Vista/7/8/8.1/10, 32 & 64-bit both.
Just run the downloaded setup file (email-checker-pro.exe).
Run 'Uninstall Email Checker Pro' on the related Start Menu folder or open 'Add/Remove Programs' in Control Panel and double-click 'Email Checker Pro #.#' in the list box.
If you have paid the license fee, you will get the license key INSTANTLY via email!
Please click Input License Key menu item under <Gets your license.> button License Button on the main interface to input or paste the license key EXACTLY as shown in your license email.
Note: if registered successfully, you can find your license information on the "About Email Checker Pro" interface.

Lost the license key? Don't worry. It's easy to retrieve your license key of Email Checker Pro. Just click Retrieve License Key menu item under <Gets your license.> button License Button on the main interface.
1. Download the latest version of this product from our official website automatically if the new version is available.
2. Exit program automatically.
3. Install the latest version of this product manually (do NOT need to uninstall first, just reinstall it).
Note: your data of previous version will be preserved.
Email Checker Pro also provides you with a few options to customize the check rules, export format, show/hide import/export wizards and unsupported email servers. Just click <Options> button on the toolbar to view/set them.
Download Download Email Checker Pro v4.1 for Microsoft® Windows®, 1.52 MB, Updated at May 16, 2019