Most video doorbells work with Alexa, and other voice assistants such as Google Assistant or HomeKit, so a compatible smart speaker in your home will announce and play an audible alert when someone is at the door and let you converse with them through the speaker. The most comprehensive Alexa integration comes from doorbells from Amazon-owned brand Ring and Blink, which has recently released its first video doorbell, the Blink Video Doorbell. Find out how the two brands compare by reading Blink vs Ring.
On top of that, if you have one of the best smart displays, such as an Amazon Echo Show 10, you can also view the doorbell's feed on its screen. A handful of video doorbells work with Amazon Alexa, Google Assistant, and Apple HomeKit; others only work with one or two of these voice assistants.