Surprisingly we are seeing an increase of emails being sent from large local and international organisations without a signature.
In a age when users have 2 or 3 (or more) devices that they are using to send business related emails, the IT department cant setup a localised email signature on the end users computer and wash their hands of it.
There are cloud based solutions that will append the signatures as they pass through the email servers, so no matter what device or client the end user users to send an email, as it traverse through the email servers it will attach the signature at the bottom of the email.
The added benefit is that these signatures are all managed centrally, so there is no risk of individual employees fiddling with them.
For the last 10 years we have been partnered with the global leader in email signature management. Their product works with O365, G-Suite and On-Premises MS Exchange.