How do I transfer emails from one Gmail account to another?

Question

Google

There is the following situation:
There are two Gmail accounts - personal and work.
Initially, work with personal and work letters was carried out on one Gmail account.
Now I have created a separate new account for work mail, and on the old account I marked all work letters (Incoming and Sent) with the WORK label.
Question - how can I transfer all letters with the WORK label from the first account to the second?
1) It is necessary that the dates of all messages are preserved
2) It is necessary that incoming letters be in the incoming and outgoing in the outgoing
3) It is necessary that all personal letters remain on the first account - that is, all that are not marked with the WORK label
Tell me how can this be done? Thank you!

Answer 1

1. Connect both accounts via IMAP to some email client, such as MS Outlook.
2. In the desired folder, select all letters and drag them to the desired folder with the mouse.

Answer 2

In new mail, set up collection from other mail, letters will be transferred along with folders and labels.
But it seems impossible to transfer only certain letters.