Change the “From" address used for system notification emails
In order to change the "from" email address and name used by system notification emails, you will first need to configure a valid Sending Domain matching the email you want to use.
For example, if you want to send from an "firstname.lastname@example.org" address, you'll need to add a Sending Domain for "yourcompany.com"
Please see this article for instructions on how to add a Sending Domain.
Why is a valid Sending Domain Required?
System notification emails include event based emails such as when an Applicant applies or when an Activity is completed as well as important authentication emails such as password resets. As such, it's important that these types of emails are always configured correctly so as to avoid going to spam folders.
Changing the From address
Go to the Settings page, and scroll down to the Emails section.
Once you have added and validated a Sending Domain, you should see that the "Sender Account For Notification Emails" fields are now enabled. Enter your custom "from" email and sender name there:
Click Update to save the changes.