Not renewing lease for Tenant

[Dan Earl]

My tenant's lease ends in a couple of months and I am not renewing their lease. 

They haven't done anything wrong, I just need the property back. 

The lease does not state how the landlord should communicate to the tenant that their lease will not be renewed for another year.

It stipulates that the tenant should give 30 days notice to landlord if they are not renewing though. So I will give them more than 30 days notice at least. 

What do you guys do for this? 

Do you have the tenant sign something acknowledging they have been given notice of not renewal or just sending them an email stating their lease won't be renewed for another term will suffice? 

Thanks for any insight. This is the first tenant I ever had, so I am new to this part.