It supports almost all major email service providers, including Gmail, Outlook, etc. Airmail comes with many unique features and a high-speed user interface that makes it a desirable option to choose from. This is a basic email client for Mac OS users. Finally, it also allows you to create emails together with your colleagues using the real-time editor. Moreover, you can also snooze specific emails to read and reply to them at a later period of time. Spark also features a search option that helps you to search any email by keywords. Like you can chat privately with your team members via email with the help of a custom chatbox. It has some features that you will not find in any other email providers. It is an email client that helps you to save time by managing your several email accounts together. Still, unlike other platforms, all the accounts in Thunderbird are displayed in a tabbed format. Like other email clients, it also allows you to manage multiple email accounts at a single time. In addition, it has a filter option that helps you get the exact email you are looking for. You will get a search box that helps you to search your desired email from your inbox.