How long does the invitation to join for students usually take?

cecheverry
Community Novice

My school has asked for a group of teachers to volunteer using Canvas this year with the hope of implementing it with all teachers next school year. I created my course, published it, and chose the start date. I then emailed my students an invitation to join this morning, but they haven't received an email. Any ideas on what else I could try ?

Thanks in advance. 

Carmen