Also required for gmail these days. But once you've set up SPF/DMARC/DKIM everything tends to work smoothly without too many deliverability problems. There migh

Also required for gmail these days. But once you've set up SPF/DMARC/DKIM everything tends to work smoothly without too many deliverability problems. There might be a few blacklists to negotiate when moving to a new ip, but it's generally pretty straightforward these days. I remember a few years ago bashing my head against a brick wall trying to solve problems delivering to hotmail and icloud, but that was before I set up DKIM and DMARC which I think might have been the issue.