I have run my own email server off a Linode for the last decade-plus, and I have never encountered this. Most of the people with whom I correspond (I run my own

I have run my own email server off a Linode for the last decade-plus, and I have never encountered this. Most of the people with whom I correspond (I run my own business from my server) are on Gmail, and I have always received their emails instantly. If you were getting emails only 20 minutes later, I wonder if there was some server misconfiguration on your end, e.g. sending messages into graylisting delays.