Along with your VPS mail server which third party client do you guys prefer?
Certainly zoho mailing service is a great one to start with.
Can I ask that why people prefer third party services without doing it themselves?
Because even though you are a technical person. Its just too much work for one person.
If you are a well established webmaster then you will probably don't even have much time preforming your sites day to day works apart from posting in it. So, why bother to get an extra burden?!!
But aren't these services costly?
Its huge work. And burden too. So, they aren't free.