The article is just an excuse to sell their services. But agreed it's pretty vague.
Also, the tone/bitchiness of the comments for the article are truly the worst I've ever read on HN in a long while. Raise the tone or just take it somewhere else.
I dropped Firefox for brave because Firefox dropped support for massive amounts of simple power user features like RSS while claiming they were all “too hard to maintain”. Meanwhile they put massive amounts of time and effort into trying to be a chrome look-alike which adds zero value.
Use your smtp server for inbound only. I much prefer to let people with deeper pockets to maintain the outbound mess. Your domain provider probably provides just such an email server for its customers.
Well, only if you set aside the cost of the education you went through in order to be able to do all that stuff... while your advice is fine for the HN crowd, unfortunately this problem affects everybody.
Better advice IMO is to tell people to use a smaller provider, like Fastmail.
Brilliant.