Maybe https://improvmx.com https://improvmx.com would be what you are looking for? (I'm the owner, to be fully transparent). We offer up to 5 domains for free.

Maybe https://improvmx.com https://improvmx.com would be what you are looking for? (I'm the owner, to be fully transparent). We offer up to 5 domains for free. If you have any questions, feel free to ask! :)