Alternative #1: Files
This option allows for a larger space, more detailed and thorough storage of information, and is easily accessible.
This is my big bulky black box. Inside, you will find more than just snail mail files, but for the purposes of this post, that's what we'll discuss.
All my pen pals have a tab on their folder that is found only on the left. This makes it simpler for me to find the pen pal section.
On the outside of each pen pal's file is their information card. I have yet to scan these, print them on cardstock, cut them out, and adhere them to the files. It will get done eventually.
Alternative #2: Binders
This option takes up significantly less space, is alphabetically organized into sections by letter, and can be carried around when on the run.
This was my old method of organizing. For some, it works better than my file method.
You can buy a pack of hole-punched tabs marked A through Z. Each pack makes a nice rainbow effect in your binder. It's super easy to decorate each tab since they're blank white cardstock.
My original information sheets were the name, address, and e-mail address of each person. Sometimes I would add in their username and site so I'd know where I met them.