An email variable or placeholder is a field that can be added to email templates, and which your Email Service Provider (ESP) uses to pull in a recipient's email address when a message is sent out. This variable is required in the HTML links for email recommendations so that Episerver Reach can recognize the user who is viewing the email message and generate products that are individually relevant to them.
If you are unsure what the correct email variable is, please contact your Email Service Provider.
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