I have been using a service named Globex Music for over a year, and overall I’m pretty happy.
What I like is the speed of adding releases. Takes just a few minutes.
Approval time is good. Usually around a day. In rare cases up to 2-3 days, not a big deal.
Had to ask them some questions, and they replied нормально.
No issues with payouts. You can use copyright. Didn’t have problems so far.
For those who do covers, everything works normally.
Cost is affordable. Roughly one dollar.
Not my first release there, and no serious issues appeared.
It’s not very popular, but it’s usable. read more
If you care about referrals, you can join partner program.
In general you can try it yourself. Not perfect maybe, but does the job.
In case you’re interested, check it through my referral.