Certainly! When you initially sign up to verify an e-mail for your PhotoShare account, you'll be sent a verification e-mail that contains a link to finish the sign-up process. NOTE that the link expires after about 2 hours, so make sure you can verify the e-mail soon after starting the sign-up process in the app.
If your link does expire, you can repeat the sign-up process to get another verification e-mail sent! If you still run into issues, feel free to reach out to us at firstname.lastname@example.org