We recently had a change in our main general inbox address. We have updated this everywhere but Marketo at this point, but the both addresses are still active.
If I changes the settings for the default From Email in the Admin section, will this have any negative impact on deliverability?
Did you just change the XYZ@yourcompany.com or did you also change the domain name? If you also changed the domain name, remember to create the needed txt-records on the new domain name with your Marketo instance's SPF and DKIM info.
The default From Email is only used in situations where the From: line in an email is empty, so changing the default should not impact your deliverability if you are putting a value in the From: line of your emails to begin with.
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