Deli meat will last in the fridge for up to 10 days before it goes bad.
If you want to keep the deli meat longer than 10 days you should put the deli meat in the freezer and when you freeze deli meat the deli meat will last from 6 months to a year.
After 6 months in the freezer the deli meat will still be safe to eat but it starts to lose it's freshness and may not taste as good.
I would recommend using the deli meat before 6 months if you want the freshest taste from the deli meat.
If you open the deli meat it usually starts to go bad within 5 to 6 days in the refrigerator but remains good in the freezer for the 6 months to a year.
If you have any leftover deli meat from an opened package you should put the deli meat in Ziploc bags and place them in the freezer to make them last longer.