Be aware that if you set your gmail (and probably most other big providers as well like Microsoft) will not deliver your mail if it's set up like this. They will be rejected because of DMARC.
Works fine with MS O365 Exchange, but I think it's all about making sure SES is all set up correctly in your name servers with SPF and DKIM records which is what DMARC enforces. Before I even enabled SES I migrated name servers to Route53 and SES auto configured the necessary records.
I was shocked when I saw Route53 charges for DNS, as I think I've always just used a free service, but at the price of a can of soda per month I suppose it's worth it :-)
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