It is really helpful tool, specially for business purpose, companies etc. You don’t even need to remember any email address & phone numbers etc.
How to Add Signature in Microsoft Outlook?
In a new message, Click on Signature > Signatures.
Click On the Email Signature tab, Click New.
Type a name and then choose OK.
In Choose default signature, do:
In the E-mail account list, choose an email account to associate with the signature.
In the New messages list, choose the signature that you want to be added automatically to all new email messages.
If you don’t want to auto sign your email messages, you can ignore this option as (none) is the default value.
In the Replies/forwards list, choose the signature that you want to be added automatically when you reply to or forward messages.
Otherwise, accept the default option of (none).
Under Edit signature, type the signature, and then choose OK.
for more details, visit: www.office.com/setup.