Freepik - More than a million free vectors, PSD, photos and free icons. Exclusive freebies and all graphic resources that you need for your projects
Boomerang for Gmail - Boomerang for Gmail is a Firefox / Chrome plugin that lets you take control of when you send and receive email messages.
Vecteezy - An online marketplace where users can license stock photos, vector graphics, and stock footage directly from artists. Basic features are free but include ads and limitations. Pro subscribers get advanced licensing and a wider selection of content.
FollowUpThen - The simplest way to schedule an email reminder
Unsplash - Unsplash is a website with high-quality free HD images. It has a catalog of more than three hundred thousand striking images that are neatly organized with tags. Read more about Unsplash.
Everypixel - Stock Image Search Engine That Filters Out Trash. Made for designers who hate bad stock images.