Bot Postman, already exist or could be made?

[AnyHow]

I'm interesting if it's possible to make script/bot/software that will do this steps:

1. Starting WoW client (not a problem)
2. Enter into account.
3. Enter Specific server.
4. Enter into the game with specific character.
5. Open in-game mail box. (Character already standing near the mail box)
6. Find the mail that contain specific text.
7. Make new letter.
8. Put specific information, items, gold, into new letter using information obtained from the mail before. (point 6)
9. Send new letter.
10. Exit WoW.

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There is an example:
Point 6: Open the mail that contains specific string of text like: "Hello World" in body of the mail. Or this mail was sent from specific character like, "John". And after that we need to take from this mail, information, like the name of the Item that was sent with this letter or the sum of gold.
Point 8: Now we need to make new letter using info that we got from previous letter. Example: in the mail from John was 1000 gold. We make new letter to another character, and sending him half of sum that we got from John 0.5*1000=500 gold.

[phantom325]

I got confused on Step 6. What do you mean "Find the mail that contain specific text"? Also confused on Step 8 (probably because I'm confused by Step 6)

[AnyHow]

There is an example:
Point 6: Open the mail that contains specific string of text like: "Hello World" in body of the mail. Or this mail was sent from specific character like, "John". And after that we need to take from this mail, information, like the name of the Item that was sent with this letter or the sum of gold.
Point 8: Now we need to make new letter using info that we got from previous letter. Example: in the mail from John was 1000 gold. We make new letter to another character, and sending him half of sum that we got from John 0.5*1000=500 gold.