Best add '' to your white list

Yesterday I sent off a query to hello@glowforge…etc, as I had an unexpected email from them.
I have recently started to check my webmail spam folder every day and spotted a mail from glowforge.zendesk. com, (I’ve added a space) and it was an automated reply from GF, acknowledging the receipt of my email.
So if you think your due a response from headquarters, it might be a good idea to add this to your white list, just so you don’t think you’ve been overlooked in a very busy period for them.