- Create a cron (or some other periodic process) to periodically check for updates
- Research whether it's possible to use the Mercury Parser without docker (perhaps a gem/npm?)
- Gauge size of EPUB archive in a more intelligent way than just limiting number of articles
- Consider sending large files using Google Drive attachment, to avoid 25MB gmail limit
- Use kindlegen to create a MOBI from the EPUB (why?)
- Better, cleaner logs
- Validate existence of docker early, and fail with nice message
- Make more parts of the app configurable
- Max number of articles per ebook
- SMTP server (currently only GMAIL)
- Update Mercury Parser section
- Better handling of initial config
- Explain how to get a google app password