Take WORD2003 as an example:

① Step: Insert → Quote → Footnotes and endnotes → Footnotes → Bottom of the page. A horizontal line will appear below the first edge. Below the horizontal line, you can write the author's information, contact information and so on. good

Step 2: View → Header and Footer → You can write the author information and contact information in the footer, and then click Close. All right. ?

Yahoo mail.

Is there one on the upper right? Mailbox settings, after entering? Sign.

After entering your name and contact information, save it.

When others receive your letter, they will naturally see your name and contact information.