Overview

Please note: you can use this technique to schedule multiple pre and post trip emails (mails before departure date and mails after trip end date) by setting up workflows for each mail you want to send out

1. Setting Webhook as trigger in Pipedream
   
2. Sharing the Webhook URL with Vacation Labs Support Team
   
3. Delay function
   
4. Setting Gmail Mail function as the Action
   

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Webhook Event as Trigger

1. Login to Pipedream
   
2. Click on Workflows and then on New Workflow (refer screenshot below)
   
3. Give it a name and click on Create Project and Continue (refer screenshot below)
   
   
4. On the next page, pipedream will ask you to select a Trigger, click on Webhook (refer screenshot below)
   
5. Click on HTTP Requests, Most popular(refer screenshot below)
   
6. On the next page keep the settings as is or change them to your liking and click on Save & Continue (refer screenshot below)
   
   
7. You will get a unique URL like the screenshot below
   
8. Please share this Unique URL with the Vacation Labs support team (support@vacationlabs.com) and they will get it configured as a webhook in Vacation Labs as well
   
9. Once VL has set it up as a webhook, you can click on Generate test event and then click on Continue (refer screenshot below)
   

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Sharing Webhook with Vacation Labs Team

Once you have generated the Webhook Unique URL (it will appear something like this, refer screenshot below)

You can share it with the Vacation Labs support team by sending them a mail at support@vacationlabs.com

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Setting up Delay Function in Pipedream

1. On the next page, search for Delay and click on Delay (refer screenshot below)
   
2. Click on Delay Workflow (refer screenshot below)
   
3. In the next step, you need to specify the trigger in the payload along with the time difference (+/-) from that trigger when you want the workflow to be triggered. Let's break down the example provided:
   
   Trigger: The trigger is determined by the value of steps.trigger.event.start.dateTime. This is a dynamic value representing the start date and time of an event, the departure date of the trip in this context.
   
   Time Difference: This is the amount of time before the event that you want the workflow to be triggered. For example, if you want the workflow to trigger 2 days before the departure date, you subtract 48 hours from the departure date.
   
   Direct Expression: The expression provided calculates the time difference in hours between the current date/time and the departure date. The direct expression is {{ (new Date(steps.trigger.event.start.dateTime) - new Date())/1000/60/60 - 48 }}   Let's dissect it:
   
   (new Date(steps.trigger.event.start.dateTime) - new Date()): This calculates the difference in milliseconds between the current date/time (new Date()) and the departure date (steps.trigger.event.start.dateTime).
   /1000 : This converts the time difference from milliseconds to seconds.
   /60 : This converts the time difference from seconds to minutes.
   /60 : This converts the time difference from minutes to hours.
   - 48 : This subtracts 48 hours from the calculated time difference to specify the desired trigger time.
   Putting it all together, the expression calculates the time difference in hours between the current date/time and the departure date, then subtracts 48 hours to determine when the workflow should be triggered.
   
   
4. Once everything is selected click on Test
   
5. Once the test succeeds then click on Continue
   

You can find the dynamic payload in the Trigger itself (refer screenshot below) and click on Copy Path next to it and paste it where it is needed

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Setting sending Mail function as Action

1. Click on the + button to add the mail sending Action (refer screenshot below)
   
2. Search for your mail service provider, here we are searching for GMAIL and then click on it (refer screenshot below)
   
3. And select Send Email as the action event (refer screenshot below)
   
4. Then you can select your Gmail Account
   
5. Select the TO email from the dynamic payload (the customer email will be included in the trigger payload) and customize other aspects of the mail as well such as Subject, Body, CC, BCC etc (refer screenshot below)
   
6. Once done, click on TEST
   
7. Once the test has run successfully you can click on DEPLOY to make the workflow live (refer screenshot below)