Ask HN: Are there any event based notification/messaging saas services?
I'm struggling to find an event based messaging/notification system to send customers emails (or push/sms etc) based on actions they perform within a product that takes into account the actual properties of that particular action or event.
For example:
User adds product X into their shopping basket and doesn't purchase it within 24 hours, send them an email about it.
User looks at 4 different products to buy but does not buy anything, send them an email 24h later about those specific products.
User buys a product, send them an email 2 weeks later to ask for a review.
User favourites a product, send them an email when it's nearly out of stock and they haven't bought it.
All these things seem pretty standard to me, I just can't find a service for something like this.
e.g. Intercom can send an email 2 days after a user favourites a product, but you can't easily pull in the product details, and if the user favourites a second product 24 hours later, things get harder.