We use namecheap.com to buy domains, their service is pretty straight forward and also affordable.

The domains can be parked on their site free of charge as well, perfect choice if you just want to reserve the domain.

I get emails like this!

I was bored one day and decided to email them back and see where it went, and like u/localguideseo said they will waste your time, tell you about how good of a fit you are, how much value you bring, how the readers will love the piece, how youll get so many leads and then let you know that you have to pay a small amount to get it published in so and so magazine, podcast etc.

8/10 for novelty of the email tho.