Newton Mail

Price: Free from tinyurl.com/nvcdvff Perhaps you want to extend the capabilities of your email app by connecting it to your favourite services. Newton Mail has several built-in plug-ins for common services like Trello, Todoist, OneNote, and Salesforce. You can quickly zap emails over to those apps with just a couple of taps.

Newton Mail is clean and works well, but don’t get too attached unless you want to pay the £39.99-per-year fee for full access.