Sign in, click your name or profile icon in the top left, and choose Profile. Click the email field, enter the new address, and click Update. If your account has a password, you'll be asked to enter it to confirm; passwordless accounts won't be.
We'll email a confirmation link to the new address, and it expires after 24 hours. Your old email keeps working as your login until you click it.
If you need to change your email address on your account because you no longer have access to the email address associated with your account, please reach out to support@thatch.com.