Where is the "thanks" mod?

[smsmasters]

I can't find the mod where you can click a thank you button to thank a user for their post.

Thanks

[TTG]

<a href="https://vborg.vbsupport.ru/showthread.php?t=122944" target="_blank">Click here</a> for the 3.6.1 version

[smsmasters]

Thank you very much! I'm from London too! :D