I have used email for many years, and QQ and TOM are the most commonly used ones. Needless to say QQ, because of its own product characteristics, you can log in directly through QQ number, and the number of users is still very large. But for business office, Tom's mailbox is safer. I remember when we graduated, the teacher recommended that we send our resumes by TOM or 163 email. Later, after I went to work, I found that many companies would provide employees with corporate mailboxes. Even if there is no corporate email, 163.net business email is a common choice.
Why do you say that? Briefly list a few useful points:
Very safe, bank-level security attributes, SSL exclusive transmission channel, not only fast, but also very safe.
Sending and receiving emails are stable, the pages are concise and clean, and the speed and stability are quite good.
Mail recall function, once accidentally sent the wrong email to the customer, fortunately, it has this function to avoid embarrassment.
These are some of my experiences, which I hope to adopt.