Google Inbox doesn't appear to offer to handle mailto: links as Gmail does.
Is there a way to enable this in Google Inbox?
Google Inbox – How to Set as Mailto Handler
google-chromeinbox-by-gmailmailto
Related Solutions
Access Gmail, and click an icon of the shape of overlapped double diamonds, next to the star icon in the omni-box where the URL is displayed.
If you don't see it, try reload the page.
Searching for "label:snoozed" lists Inbox snoozed emails in Gmail. But snoozed does not seem to behave like any normal label in gmail as you can not apply it other emails.
Best Answer
Go to https://inbox.google.com and click the diamond-shaped icon to the right of Chrome's address bar (omnibox). Then choose Allow and Finished: