Gracias por la amistad.
Gracias
The same way as you do in English, except that you translate them in Spanish.
abrazo amigo
Thank you Darling can be said "Gracias, querido/a, mi amor".
gracias por tu amistad
translate. Google.com
Happy Friendship Day
muchas gracias
I can translate the document from English to Spanish.
"Thank you" in Polish is "Dziękuję".
"No thank you" in Spanish is "No, gracias".
"merci"