Using these two WA features cuts the work down massively. When all these were coming to you via emails you had to open the email, then read it and then delete it.

With Notifications you open, read, arrow back and you're on the next notification. A very smooth operation for smooth operators. No need to manually delete.

With Activities you can look at the items' title and make a decision if you want to read it. If you don't you just move on; no deleting. Later on if you see the item again you can change your decision and read it but it isn't left in you email account to take up room.

You can decide on the training you want and the questions you might be able to answer. And boy that last one is important. A lot of people go to a question, leave a comment not an answer and then go on to another item. This moves the question to the answered category even if no answer has ever been given. Using Activities the question remains on the list and can still attract answers.

And the best result of doing this is you are very unlikely to overload your email account.