So if you have just purchased an Apple MacBook and you are not very satisfied with the email service installed on it or you simply do not like it, feel free to change it any time and replace it with the email service that you like or one that you want to try. For example you could try installing and using the Thunderbird for MacBook, as it is a great email service and it has certain advantages when compared to other similar services.
First of all it comes with Mozilla web browser, which is one of the most reliable browsers, being a lot more secure than Internet Explorer for example that has its gaps in security and people with bad intentions can use them to hack into your email address and computer, too. Mozilla Firefox and Thunderbird, implicitely, protect you against viruses and email scams.
Then another one of its strongest features is the way in which it is organized. The Thunderbird email application for Macbook gives you the opportunity to organize all your emails in a fast and efficient manner. This way you will be able to find a certain email message a lot faster because you can now organize them in different folders with different names or categories. You can customize it any way you like. This way you will enjoy having a personalized and private and secure email service to use on a regular basis.

I know that nobody is perfect so, by extension, no email service is perfect and every one of them has its own flaws, but you are free to look for the one that suits you best and has the least number of flaws and the biggest number of features that are perfect for you. So do not hesitate to change your email service and choose Mozilla Thunderbird, at least for the reasons I stated above.

Or you can try it and then some others, too, and take your time to compare them and finally choose the best one for you. But my thought is that having a Macbook it is very important for you to know that your data is secure and that there are no breeches in the security system of your internet connection. I honestly tried it and liked it very much.I know that usually it is used by people who own a different brand of PC and usually a desktop, but hey, let's give it a try.