Didn't receive an account activation email ========================================== If you didn't receive an account activation email to the address you entered during installation, double-check your spam folder. If the email didn't arrive, check with your hosting provider about whether or not the server is able to send email via `PHP's mail function `_. We strongly recommend running ThinkUp on a web server which can send email. If your web host is unable to send email via `PHP's mail function `_, several ThinkUp functions are affected: * You won't receive the initial account activation email during ThinkUp installation * New users will not receive an account activation email when they fill out the registration form * You won't receive the authorization link to upgrade your ThinkUp installation when updating the application * Users won't receive an email to reset their password when using the "Forgot Password" link You can manually activate user accounts by setting the is_activated field equal to 1 in ThinkUp's owners table. Here's how to :doc:`directly access your ThinkUp database to make changes to it `.