Sending emails natively from Google Cloud Pub/Sub events - pubsub_sendmail is a Google Cloud Function that can be triggered by a Google Cloud Pub/Sub which then sends an email using Python smtplib to the desired recipient.
PubSub to BigTable — Piping your Data Stream in via GCP Cloud Functions - IoT pipeline using Pub/Sub, Cloud Functions, and Bigtable.
A simple blueprint for building AI-powered customer service on GCP - an overview of a simple solution blueprint that may inspire you to meet these objectives using GCP.
Switching from SQS to Google Pub/Sub - How to switch from AWS SQS to Pub/Sub
gSlack: Integrating Google Cloud Platform with Slack
Securing Cloud PubSub Push with Cloud Endpoints - Example how to use Cloud Endpoints to verify API key from Pub/Sub (without writing code)
Combining Thomson Reuters data with Google BigQuery and Google Cloud Pub/Sub API - Proof of concept to analyze data with BigQuery ingested from Reuters API