Samsung Galaxy Tab S6 - Compose and Send Email Message
From a Home screen, swipe up or down from the center of the display to access the apps screen.
Tap Gmail .
Ensure the appropriate email address is selected:
Tap the Switch account icon (upper-right).
Tap the appropriate email address.
From an Inbox, tap the Compose icon (lower-right).
From the To field, enter the recipient's email address.
As the recipient's email address is entered, a list of matching contacts may appear and can be selected at any time.
From the Subject field, enter a subject.
From the Message field, enter a message
To add an attachment:
Tap Attach (upper-right).
Tap the desired attachment then tap Done.
If necessary, select the attachment type (e.g., Gallery, My Files, Location, etc.) and navigate to the attachment.
If prompted, tap Allow to accept access permission.