Feature: Surveys targeted to events

[joethreepwood]

Is your feature request related to a problem?

Sometimes there's a desire to send a survey to someone when they do something, rather than based on a property or a feature flag; to trigger a survey based on an event.

This is currently blocking to PostHog/meta#120 but other examples include:

• I want to send to a survey when someone churns (example above), or leaves a beta
• I want to send a survey when someone completes a purchase
• I want to send a survey when someone finishes a customer service experience
• I want to send a survey when someone presses a button marked 'Feedback'
• I want to send a survey when someone signs up, or renews
• I want to send a survey when someone uses a feature for the first time

Currently this doesn't seem to be possible for surveys, which can only target based on properties or cohorts, with flags as a variable.

Describe the solution you'd like

Event-based targeting for surveys. An immediate survey trigger is definitely the most desirable, but potentially it could have other formats?

When [Event] is completed
When [Event] is completed + [X] Days/Hours
When [Event] AND [Event] are completed
When [Event] AND [Event] are completed + [X] Days/Hours

Describe alternatives you've considered

Additional context

Thank you for your feature request – we love each and every one!

[benjackwhite]

If we do this. Then we do this.

[kiran-4444]

I'd like to work on this, may be a part of it initially (like sending surveys to people who opted out of beta). Can I go ahead with this?