Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
GIMP - GIMP is a multiplatform photo manipulation tool.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
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.
Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.