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I just got an email from Basecamp and it included a link to "View on Basecamp" which I could click from my Gmail inbox.

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How do they do that? I looked at the raw message in Gmail but I couldn't see any headers that included the appropriate link - it only shows up in the actual message contents. Is this a Gmail/Basecamp specific partnership or is it something I can do when sending emails through my app too?

Alex Ghiculescu
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1 Answers1

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These are Gmail Actions, declared using JSON-LD or Microdata embedded in the email.

Jeremy Kemper
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