How can I change the address that all the emails are sent from?
For deliverability and anti-spam reasons, Conjured Referrals sends all emails from firstname.lastname@example.org and uses your email address as a reply-to. In order to have the emails sent from your email address, you'll need to sign up for a free Sendgrid account and integrate it on the Settings page of the app.
Note that all test emails will still come from a @conjured.co email address in order to avoid having them count against any limits you may have with Sendgrid.
To integrate Sendgrid, you'll need to generate a "Full Access" API key by going to Settings > API Keys within your Sendgrid account, creating a new key, and pasting it into the Integrations page in Conjured Referrals.