With an all-star-calibre catcher in Russell Martin (his 23 homers and .458 slugging sitting second in MLB among catchers in 2015), the Blue Jays should have no worries for 120-130 games behind the plate.
It is the other 30-40 that are the issue. They do have R.A. Dickey’s personal catcher Josh Thole on the roster, who is seemingly set to go into the season on their 25-man roster.
But it is reasonable that the Jays carry a third catcher, and beyond that their have even been reports of the Jays shopping Dickey (in which case Thole would be on his way out the door as well).