Step 1. Open the www.boomeranggmail.com. Now click on the big red button.
Step 2. Now click on Add button. Now you will see that extension will get added to your browser.
Step 3. Now login to your Gmail account.
Step 4. Now Simply skip it by clicking on “Skip”
Step 5. Now compose email, and you will see a “Send Later” Option showing just behind
the “Send” option.
Step 6. Now select the option of “Send Later” and you will be see all schedule option that you want to set.
That's it Now Enjoy & Comments Below
