The delivery services offices that the slips send people too can be far away and hard to get to. But, increasingly, there are better options.
In the Spar on New Street South, it often had long queues. Now locals will have to travel further for pensions, social protection, disability allowances, and postal services.
An Post say it plans to contract out the post office to a private operator, leaving some with concerns about future services.
At a meeting earlier this week, some residents and local politicians met to organise against the possible closure of post offices in Cabra.