GroupHigh is a very helpful influencer marketing software that has both email outreach feature and influencer research tool. You can quite easily search for the relevant influencers in your industry by reach, location, social following, content, etc. It also allows you to review various promotional tactics used by different influencers such as referral links, giveaways, special discounts, sponsored posts, and more.
How we use Canva: The optimized sizes and built-in templates make it fast and easy to create tall pictures for Pinterest, rectangular ones for Twitter, square for Facebook or Instagram, and any size in between. We find Pablo (another free alternative) to be great for Twitter-sized images of 1,024 pixels by 512 pixels, and Canva to work really well for all else.