I have roughly 100 domains parked on top of my main domain. Through cPanel, I set up 7 emails to redirect to different Gmail accounts on the main domain, and then just set all of the other domains to copy what that main domain does.
Is there an advantage to recreating this in Cloudflare?
If so, is there a way to make all of the parked domains just automatically copy what I’ve set up for the main domain?
Unlikely, but I’m not a fan of forwarding, especially to destinations that you cannot administer. Forwarding has been unreliable for at least a decade and is only going to get worse. If you have a system that works and scales, I wouldn’t change it. If you have a specific problem to solve, and Cloudflare Email Routing addresses that specific problem, only then would I consider it.
Any copying of configurations would need to be scripted and implemented by you using the Cloudflare API.
Pre-mobile I used a POP account on the server, but then when I had a phone and tablet in addition to the computer I began to IMAP. Over time, the storage got to be overwhelming, AND I was having issues with Gmail and Yahoo sending my emails to spam 
That’s when I began forwarding to Gmail (Google One = 100G of storage) and using “Send mail as”.
I still have an issue with automated emails going to spam (and anything that refers to “ads”, even when replying to a customer that requested information), but it’s not as bad as before.
Do you think that piping my emails through Cloudflare would improve delivery?
If so, would it be reasonable to ONLY set up the emails for my main domain, and then my server would still redirect emails for all of the parked domains?
Anything but.
My answer for any mail you care about is always going to be deliver it to the MX that you want to receive it. Forwarding is unreliable when you have no control on the receiving end.
If you can deliver to even a small cheap webhosting mailboxes and then pull the mail to your GMail with POP, I’d do that before forwarding to GMail. Forwarding in the age of DMARC is folly.
Sorry, I said that wrong; I mean, I have an issue with people GETTING my emails.
I’ve never sent spam in my life, but Gmail and Yahoo pretty much always filter any emails that I send to customers about advertising, and whenever a user requests a password the automated reply is always filtered.
If I could improve that then I’d be happy to live with inconveniences on my end.
Other than publishing SPF, DKIM and DMARC in tou Cloudflare DNS, email sending techniques and strategies are pretty far off-topic for discussion in the Cloudflare Community.
That said, here’s some food for thought:
Oh, I wasn’t asking for techniques, just if using Cloudflare would help. I think that the consensus is “no”, so it’s all good 
Thanks for the insight!
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