Using a branded email address often gives a better impression and can help with deliverability. When people see an email coming from a custom domain like [email protected] instead of a free one like Gmail or Yahoo, it looks more professional. Email providers also take this seriously. They often trust custom domains more, especially when the domain is set up properly. A branded address also gives you more control over your sender reputation. You can set up things like authentication records, which make your emails more secure. If you're promoting affiliate offers, having a branded address can build more trust with your subscribers too. They are more likely to open your emails if they recognize where it's coming from. If you were starting your own affiliate email list, what would make you choose between using a free email address or setting up a branded one?