If you're using Exchange or Office 365 take a look at How to prevent Outlook from adding signatures:
Your users must be logged on to a domain to which you have full administrative access as they must be subjected to your GPO policies for this solution to work. Organizations working with Exchange Online (Office 365) can also apply this solution if their users are connected to an on-premises Active Directory or Azure AD to which you have full administrative access.
Another option may be an add-on such as the Enterprise Email Handler for Jira. They have an article titled Remove Signature Text and Images that may help you do what you want as well.
Hopefully that helps.
Atlas Camp is our developer event which will take place in Barcelona, Spain from the 6th -7th of September . This is a great opportunity to meet other developers and get n...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG