An email mistake I've made as a long-term university sysadmin
I've been a sysadmin here at the University of Toronto for quite a long time, which has enabled me to make a natural and probably common (university) mistake with my email. Namely, I have by now totally commingled my work email and my personal email by the simple mechanism of just using my normal university account for everything. I get random technical mailing lists I'm interested in sent to my address here, any number of people who correspond with me use my address here, and so on.
This is unfortunate for various reasons, including that it makes taking a break away from work email and work systems much harder. I can't just not log in, because if I do I'll miss personal email, and the moment I log in it starts being tempting to take a peek at various work things.
Some people would and could deal with this by moving their personal email to an outside provider (GMail is obviously a popular choice). This is completely possible, and in fact I got people to change the personal email they used for me once (I moved it between systems here). Unfortunately I'm very attached to how I handle my email today. The tools that I use intrinsically require a Unix system with a local mail spool, and running my own Unix system for this is (still) enough of a hassle that I haven't taken a deep breath and just got to it.
(The problem with running my own Unix system is not the basic work, it's all of the additional things I'd have to worry about and spend my limited free time on. There's backups and maintenance and monitoring and keeping track of how to rebuild everything and so on and so forth. All of this is simple at work because we've built an entire infrastructure to make it that way. And then there's the whole issue of anti-spam filtering, where I currently get to lean on a commercial package.)
I know it's less than ideal to keep my email commingled, but it's just easier to let this situation go on. Everything works today and I don't have to worry about any number of things and most of the time the commingling barely matters. Inertia is a powerful force, as is little incremental steps; they're how I've wound up in this situation in the first place. Big bang things like setting up a new mail system et al from scratch are hard, because there's so much work before you get anywhere.
(I should do it anyways. Someday.)
Sidebar: My past efforts at this
At one point I attempted to have at least a personal versus work email address split here, but that went down in flames many years ago because spammers got their hands on my then personal email address (partly because the address predated spammers so I did not take the extensive array of precautions that I do today). Today that old address lives on basically only as a way of getting information about spammer behavior (eg).
Almost ten years ago when I shifted to Computer Science I had the opportunity to (re)split personal email from work email (since I was changing my primary email address anyways), but at the time I was so busy with other aspects of the transition that I didn't really have either time or energy to even think about setting up a new Unix system with a new email setup and so on. Anyway, ten years ago one didn't have the modern wide variety of inexpensive hosting options, at least as I imperfectly remember it.