When Apple announced iOS 14 back at WWDC20 users were excited to see that Apple was allowing users to change the default mail app from Apple Mail.
Apple has some requirements for a Mail app to meet to be eligible to become the default app to stop nefarious apps. If you want to change your default mail app simply follow the steps below:
Go to Settings
Search for the mail app you want to use as your default and click on it
Click Default mail app
Select the mail app you want to become the default
Please note not every app has updated to become true app of choice just yet as Apple only gave developers 24 hours notice to submit their apps.