Sitecore Forms Custom Email Export

MyProject.Feature.Forms.config

<?xml version="1.0"?>
<configuration xmlns:patch="http://www.sitecore.net/xmlconfig/" xmlns:activeenv="http://www.sitecore.net/xmlconfig/activeenv/">
  <sitecore>
    <settings>
      <setting name="Sitecore.ExperienceForms.ExportDataDelimiter" value="," />
    </settings>
    <services>
      <register serviceType="Sitecore.ExperienceForms.Client.Controllers.ExportDataController, Sitecore.ExperienceForms.Client"
               implementationType="Sitecore.ExperienceForms.Client.Controllers.ExportDataController, Sitecore.ExperienceForms.Client" >
        <patch:attribute name="serviceType">MyProject.Controllers.ExportCustomDataController, MyProject</patch:attribute>
        <patch:attribute name="implementationType">MyProject.Controllers.ExportCustomDataController, MyProject</patch:attribute>
      </register>
      <register serviceType="Sitecore.ExperienceForms.Data.IExportDataProvider, Sitecore.ExperienceForms"
                implementationType="Sitecore.ExperienceForms.Client.Data.CsvExportProvider, Sitecore.ExperienceForms.Client">
        <patch:attribute name="serviceType">MyProject.Providers.ICsvExportDataProvider, MyProject</patch:attribute>
        <patch:attribute name="implementationType">MyProject.Providers.CsvExportProvider, MyProject</patch:attribute>
      </register>
    </services>
    <api>
      <services>
        <configuration>
          <!-- Grant permissions to Campaign Creator controllers -->
          <allowedControllers hint="list:AddController">
            <allowedController desc="ExportDataController">
              <patch:delete />
            </allowedController>
            <allowedController desc="ExportCustomDataController">MyProject.Controllers.ExportCustomDataController, MyProject</allowedController>
          </allowedControllers>
        </configuration>
      </services>
    </api>
  </sitecore>
</configuration>