Apple Mail is the default email client that comes with every Mac starting from OS X 10.0.Mac users depend on Apple Mail for their day-to-day email use as it gives them an easy way to manage and organize their emails and conversations.It works almost the same way as Microsoft outlook does but give you better features and search opportunities.Apple’s Mail.app works perfectly fine with all the Email service providers but sometimes it gets quite a few issues with some of the Email service providers, either due to extra layer of security applied by Email service provider or incorrect settings in the Apple Mail app.