Try:

Rory McIlroy
The European Tour
Wentworth Drive
Virginia Water
Surrey GU25 4LX
UK

http://www.europeantour.com/europeantour/players/playerid=34024/index.html

[quote]Question:
HOW CAN I CONTACT A PLAYER?

Answer: Ever wondered how to contact your favourite players on the European Tour? Whether it's a question about what make of club a player uses, tips on how to start out playing golf, a simple message of good luck or congratulation, you can now email any member of the European Tour, Seniors Tour or Challenge Tour using a dedicated email address ( player at europeantour.com ). To contact your favourite player click here and don't forget to add the player's name in the subject field. Alternatively, you can write to them c/o the Tour office (address above) and your letter will be forwarded on.[/quote]

http://www.europeantour.com/aboutus/faq/index.html

or:

Rory McIlroy
The Rory Mcilroy Foundation, Ltd.
Unit 1
St. Helen's Business
Park Holywood
Co Down BT 189HQ
Ireland

http://roryfoundation.com/

Fanmail 8)

[quote="admin"]Hi RobQua2307 :)

Thank you for your feedback {up} and Sorry for your RTS :(

Did yo use this address please?:

Rory McIlroy
PGA Tour, Inc.
112 PGA Tour Boulevard
Ponte Vedre Beach, FL 32082-3046
USA

Fanmail 8)[/quote]

Dear Admin,

I used the address yes.

Hi RobQua2307 :)

Thank you for your feedback {up} and Sorry for your RTS :(

Did yo use this address please?:

Rory McIlroy
PGA Tour, Inc.
112 PGA Tour Boulevard
Ponte Vedre Beach, FL 32082-3046
USA

Fanmail 8)

I send 24/02/2018 my letter with two photos to Rory McIlroy.

I used the address on the feedback forum site of fanmail.

Dissapointed ..