Using a single repeating job could make things easier

[vigliag]

Unni is currently creating a new Job every time a user subscribes.
A different approach could be using a single repeating job, scheduled to run every 10 minutes for example, which takes from the database the list of users who need to be notified and does so.
This would make it easier to restart the bot (there's no queue to refill) and scales better.
Consider something like this: https://github.com/vigliag/vijournalbot/blob/master/main.py#L188