To set up a digital signature automatically to emails you compose in Gmail
STEP 1:
Click the Settings gear button in your Gmail inbox toolbar.
STEP 2:
Select Settings from the menu-bar that will have appeared.
STEP 3:
under that select General.
STEP 4:
Go to Signature under that select signature radio button
make sure the desired account is selected under Signature.
STEP 5:
Type your signature in that signature text...
