If you’re not getting the activation email from Grammarly, try the following:
1. Check your spam or junk folder and any tabs in your Inbox such as Clutter or Focused. It may have been diverted to those folders and is the most likely problem.
2. Try adding these email addresses to your email contact list and then send yourself a confirmation email again:
3. If you signed up at https://www.grammarly.com/enterprise/signup, as shown on the Grammarly guide, and still didn't receive the confirmation email, you need to log out by going to https://app.grammarly.com/ and clicking Log out in the left-side panel, then log in again at https://www.grammarly.com/enterprise/signin, and click Resend email.