I have blogged about the background and motivations for this package:

http://azam-a.github.io/Email-to-Slack-Notifier-Using-Python/

Of course there are more elegant solutions like gmail2slack or gocd-slack-build-notifier, but in cases of permission constraints to the gocd environment and the only available channel is email, then maybe this solution is acceptable. Nevertheless, it was a good learning exercise for me.

1. Turn on Gmail API for a Google Account (instructions Step 1) and get the client_secret.json to register the app

2. Clone this repo

3. In activated virtualenv session (or global environment), install required packages from requirements.txt:

   pip install -r requirements.txt
   

4. Edit config.py to include Slack Incoming Webhook and GoCD dashboard URLs (template)

5. Edit config.py to define CI_STAGES and DEPLOY_STAGES in a form of list of string. These definitions are used by sending rule as well as changeset-exclusion logic in slack.py

6. Paste the client_secret.json from Step 1 into the cfg folder

7. cd into the gocd2gmail2slack directory (which contains integrations.py)

8. (optional) To run tests, run python -m unittest from the same directory as Step 7

9. Create a Gmail label 'SENT_TO_SLACK' at the intended Gmail account

10. run python integrations.py

11. The first run will open a browser to authenticate and authorize a Gmail account

12. The credentials will be saved to cfg/cred/saved_credentials.json for subsequent runs

13. The script will query all the 'UNREAD' emails and process them accordingly

14. Schedule the running of python integrations.py every X minutes using Task Scheduler or Cron