Jungle Scout - Amazon product research made easy.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Inventory Spy - Spy how many products remain on any Amazon Product’s offer listing page.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
AMZScout - AMZScout extension will help you make a decision about picking a niche based on the actual data, not intuition.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.