Gmail is big and we all know that. At times I prefer to use my gmail because the mailbox is larger than most corporate mail boxes and its sweeter. I dont think forms that do not accept @gmail aor @yahoo are smart as this surely will drop conversions. Perhaps collect all emails (people) and filter out the noise – by creating a separate mail campaign for users with @gmail.com.
P.S I am actually a valuable buyer as I needed this.
