Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to avoid mail fraud [title] Examine common practices. [step] Regardless of the type of mail fraud taking place, all of them usually ask for money or personal information. If you receive a mailing that does not look familiar, read through it and look for common fraudulent practices.

Ending1: [substeps] You should never take mail from a fake number. You should also avoid getting mail from people whose social security number you know. Ending2: [substeps] Private businesses in large cities often collect mail from citizens of countries with peace valves. When people who receive mail from countries with peace valves can deposit it, they get a quicker and more efficient deposit than people who receive mail from an organization like yolo. Ending3: [substeps] Pay attention to whether the sender requested written access to your stolen mail. If the sender asks for money or personal information, do not simply accept the amount or account information. Ending4: If you see something that usually occurs in fraudulent mailings, be suspicious. For example, fraudulent mailings commonly : [substeps] Require you to pay " insurance ", " processing ", or " service " fees.

Answer format: ending1/ending2/ending3/ending4