Login to bulk email panel at https://securehostmail.com/customer/index.php/lists/index
Click on the left side "List," which will lead you to pay with a list of all existing email lists you have created. If not, you will create a new email list.
An Email List is like an email group, where you set some email IDs to be part of the list to whom you want to send bulk emails.
Now click on any email list over there "Name of email list"
Now click on the Update button over there screenshot as mentioned below:
On the next page, you shall enter the required contact details of your company/institution, which you want to update over there.
Now, those details will always be used whenever you send an email at the footer when you use the company details Tag in the mailer. We will recommend keeping the same sender email, however, "reply to" email you can have your preferred one.