If you are new to publishing, you may assume that you have the right to do whatever you want with your publication, e.g. send copies to anyone who asks for it. However, this may not be the case depending on the journal in which you publish.
SPARC (the Scholarly Publishing and Academic Resources Coalition), has produced a web page that explains the issue of author rights and provides tips on how you can ensure that you secure your rights as an author as fully as possible. An addendum that can be attached to publication agreements tailored for Canadian authors is available on the site. In addition, there is a link to the English and French versions of the CARL (Canadian Association of Research Libraries) author rights brochure.
Visit the SPARC Author Rights page at: https://sparcopen.org/our-work/author-rights/.