Not received visa approval letter

[Aman0007@9]

I got my visa stamped on passport but did not receive any visa approval letter on mail or on gc key .
Pls anybody could tell why is it so and how can I get it as soon as possible

 

[GMP97]

Thats weird you need the letter of introduction to show the immigration officers at the canadian airport whrn you land did you check the envelop your passport came in? It usually comes with the introduction letter