Outlook stopped providing service for custom domains. Are there alternatives?

What I am looking for is an easy way to set up an email account associated with my own domain. Some time ago I've been using free Google's service, after they stopped providing it, for new domains I've started using Microsoft's Outlook, but it turns out they recently stopped giving free service.<p>If there are no such free services, can anyone recommend something cheap? It's not that I am afraid to pay, but somehow it doesn't feel right to pay for something I barley use. I got used to setting up mail addresses for each new domain I buy and I do buy them mostly for hobby projects - I am only user and maybe I send and email once a month. I consider it to be a good practice to have e.g. webpage's contact form to use email address from webpages domain. But paying hundreds of dollars for such uses cases seems to be an overkill.