Jira may be extremely sluggish and require a large amount of memory on the client side.
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
Wrike - Wrike is a flexible, scalable, and easy-to-use collaborative work management software that helps high-performance teams organize and accomplish their work. Try it now.