Extract email address from people picker

[XtatiK]

I have a SharePoint list with two columns: the first with a people picker called "Approvers" and the second labeled "EmailAddress". I'm trying to extract the email address only from the "Approvers" column when someone selects a person and use that email to auto-populate the "EmailAddress" column.

I'm sure it's possible, but it's a bit outside my wheelhouse. Thanks in advance for any assistance.

[#2]

@XtatiK Do you just want to show the email in list view or store the value in column & use it somewhere else?

If you just want "display" value in list view, you can use JSON formatting on column like: 

{
   "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
   "elmType": "div",
   "txtContent": "[$PersonGroupCol.email]"
}

Output: 

If you want to store the value in column & use it somewhere else, you can create a power automate flow to update the Email address field based on the Person or Group field.

Check my answer given in this thread where I have explained same scenario in detail: Get Email from user and enter into SharePoint list field 

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