If you don't have a sender email, go to your account settings under the Sender & Domains section and click Add a Sender Domain. You can verify a single sender email (eg. firstname.lastname@example.org) or your whole domain (eg. @arengu.com), to be used in your email actions.
You will need to use this value in your "Send Mailjet email" action in your Arengu flow:
Arengu allows you to build all your user flows connected to your current stack, and avoids coding all the UI, complex integrations, validations or logic from scratch. Try it for free and start building faster and scaling your application needs as they grow.