E-mail my wife when I check-in at airports.

First, we need to connect Foursquare and Gmail to IFTTT.

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  Create IFTTT account.

  Create IFTTT account if you don't have one.

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  Connect Foursquare to IFTTT.

  Give IFTTT access to your Foursquare account, using Foursquare credentials.

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  Connect Gmail to IFTTT.

  Give IFTTT access to your Gmail account, using Gmail credentials.

Next, we need to create a workflow automation scenario using graphical no-code web interface of IFTTT.

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  Set up a Trigger action for Foursquare

  Choose the following trigger: New check-in at category (This Trigger fires every time you check in to a venue in a specific category on Foursquare or Swarm. It only works with public check-ins.).

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  Then set up an Action for Gmail

  Choose this action: Send an email (This Action will send an email to up to twenty recipients from your Gmail account.).

Finally, we need to test this automation and publish it.

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  Customize data flow

  Configure the data that is exchanged between Foursquare and Gmail.

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  Test the workflow and turn it on for production use

  Test your scenario and publish to production. Now you have an automatic workflow, that will E-mail my wife when I check-in at airports.!