Hi,

I'm trying to implement an APEX trigger on the Case object to automatically assign an Entitlement to the case when it is created via email-to-case.
I found a lot of sample codes but none of them is working for me.

Although I created an account and a contact belonging to it, when I create a new case per email in the trigger I always get null for the AccountId. 
Surprisingly when I open the case I can see the correct contact and account on it.

This is the code:

trigger DefaultEntitlement on Case (Before Insert, Before Update) {
set<id> contactIds = new set<id>();
set<id> acctIds = new set<id>();
For(Case c :trigger.new) {
    system.debug('--- Contact id: '+c.ContactId);
    if(c.ContactId != null) {
        contactIds.add(c.ContactId);
        
    }
    system.debug('--- Account id: '+c.AccountId);
    if(c.AccountId != null) {
        acctIds.add(c.AccountId);
        
    }
}
    List <EntitlementContact> entlContacts = 
                [Select e.EntitlementId,e.ContactId,e.Entitlement.AssetId 
                From EntitlementContact e
                Where e.ContactId in :contactIds
                And e.Entitlement.EndDate >= Today 
                And e.Entitlement.StartDate <= Today];
        if(entlContacts.isEmpty()==false){
            for(Case c : Trigger.new){
                if(c.EntitlementId == null && c.ContactId != null){
                    for(EntitlementContact ec:entlContacts){
                        if(ec.ContactId==c.ContactId){
                            c.EntitlementId = ec.EntitlementId;
                            if(c.AssetId==null && ec.Entitlement.AssetId!=null)
                                c.AssetId=ec.Entitlement.AssetId;
                            break;
                        }
                    } 
                }
            } 
        } else{
            List <Entitlement> entls = [Select e.StartDate, e.Id, e.EndDate, 
                    e.AccountId, e.AssetId
                    From Entitlement e
                    Where e.AccountId in :acctIds And e.EndDate >= Today 
                    And e.StartDate <= Today];
            if(entls.isEmpty()==false){
                for(Case c : Trigger.new){
                    if(c.EntitlementId == null && c.AccountId != null){
                        for(Entitlement e:entls){
                            if(e.AccountId==c.AccountId){
                                c.EntitlementId = e.Id;
                                if(c.AssetId==null && e.AssetId!=null)
                                    c.AssetId=e.AssetId;
                                break;
                            }
                        } 
                    }
                } 
            }
        }
    }

In the debug log I have the following:

18:30:12:112 USER_DEBUG [5]|DEBUG|--- Contact id: 0030X00002NbGx4QAF
18:30:12:113 USER_DEBUG [10]|DEBUG|--- Account id: null

Also, if I add the Entitlement to the contact then it gets assigned correctly, but I do not want to link the Entitlements to contacts (only to accounts)