yeah in the past I have purchased verified outlook email accounts from service and used them to verify my Soundcloud accounts, but between the 2captcha costs, the cost of the email addresses, and the probability that one of the two accounts will be blocked, it gets really costly for not so much return. I have also use catchall addresses which work until you get noticed, then you lose everything. (It's best to split them into blocks of say 100 per domain so you don't lose everything when it happens.)
Today I have 2 different types of marketing accounts. I have about 300 that I have built up manually, where they are actually legit which their own branding, and they are started by following each other, then they start to take on a life of their own once they go out and start liking/reposting other songs. It really hurts when I lose one of these though and it happens no matter how careful I am.
Then I have the MASS marketing accounts that are unverified. They of course are not as good because they are obviously fake.