Hello, we have a VF email template. We need to send this out automatically once a month, with a few conditions:
1) It must ONLY send to users that own at least 1 Lead record
2) It must only send ONE email to each of those users
3) it must send once a month (as mentioned)

If it is helpful, here are the details of my VF email. (I am using a component and controller)

VF TEMPLATE
<messaging:emailTemplate subject="Your Team's Leads- Owner Assignments" recipientType="User" relatedToType="User">

 <messaging:htmlEmailBody >
   Hi {!RelatedTo.firstName},
  <p>The following leads have not yet been updated:</p>
   <c:leadsinfo ToID="{!RelatedTo.Id}" />
 <p>To update these leads, click on the "Lead Status" field located  in the upper right on the lead page layout.</p>
 </messaging:htmlEmailBody>

</messaging:emailTemplate>

COMPONENT
<apex:component controller="LeadsInfoController" access="global">
    <apex:attribute name="ToID" type="ID" description="the lead owner ID" assignTo="{!salesRepID}"/>
     
        <apex:datatable value="{!InactiveLeads}" var="item" border="1">
                    <apex:column headervalue=" Name ">
                        <apex:outputText value="{!item.name}"/>
                    </apex:column>

                     <apex:column headervalue=" Created Date ">
                        <apex:outputText value="{!item.CreatedDate}"/>
                    </apex:column>
       </apex:datatable>
</apex:component>

CONTROLLER
public class LeadsInfoController {
  //capture the user id
    public ID salesRepID {get; set;}
    public List<community_lead__c> ClsInfo = new List<community_lead__c>();

    public List<community_lead__c> getInactiveLeads() {
        ClsInfo = [select Name, CreatedDate  from community_lead__c where  ownerId =: salesRepID];
        return ClsInfo;
    }
}