No. It checks during initial activation and occasionally afterward. If you are offline for months, it will continue working. But if you reinstall or change hardware, you may need to re-enter the key with an internet connection.

: For sales or billing issues, you can contact sales@sublimetext.com. Purchasing and Licensing Model

Copy your entire license key from your email, including the --- BEGIN LICENSE --- and --- END LICENSE --- lines.

If you are still looking for a “free link” because the price seems high, let’s clarify the actual cost.

If you've purchased a license, here's how to enter your key:

Once you have your key, you can activate the software using one of these methods: In-App Menu : Open Sublime Merge and navigate to Help > Enter License . If you do not see the menu bar, pressing the key will usually reveal it. Manual Activation