Inbox has a new feature that was just added to the web version of the app called 'Templates' that should make it a little easier for users to send out emails from time to time. Templates, as the name would suggest, will enable users to grab a chunk of text and insert it into emails, something that should assist in any email where users may have to use a generic response or have at least some portion of the email be a cookie cutter piece of context. For example, if you often have to use phrases like "be there in ten," then you could have a template for that so you could simply tap and select and have it entered into your email instead of typing it out.
Ideally, this would be better suited for longer bits of context which may be one or even a few longer sentences as opposed to a quick few words, but as the templates can be created by the user, they can be for really anything you want, and if what you want is to shave a second or two off for just a few words, then you'll have the opportunity to do that.
While this does appear to be arriving on the web app for Inbox users, there's no mention of detail on when Google might incorporate this feature into the Android app, so perhaps it's coming in the next future update. When Templates does make it to the Inbox Android app, it will join other newly added features like asking users if they want to share photos that have been taken recently, as well as the new search interface which Google began testing back on August 30th. To access Templates on the web app, there should be a new button in the toolbar at the bottom of a new email, which will have buttons for making a draft template or managing ones that you've already created. Additionally you can also access your templates from the settings screen as it has its own sub menu, and from here you can create new templates to save for later on. Templates will have a title and a content box just below it, similar to what you would see when creating a new note in Google Keep.