Sharepoint 365 - Adding clickable email to list

jacobite Yes, it is possible to convert the text field to clickable text in list view using column formatting. Follow below steps:

1. Create a single line of text field in your list to enter email address.
2. From list view, select column name header, select "Column settings" and then select "Format this column". 
3. Click on "Advanced mode" from right side panel.
4. Copy-paste below JSON on textbox by removing existing JSON and click Save

{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "elmType": "a",
  "txtContent": "@currentField",
  "attributes": {
    "href": "='mailto:' + @currentField"
  }
}

Output: 

Documentation: SharePoint column formatting 

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