Signed in as admin · global
Who you are to this panel and where reports about your domains go. Applications keep their own logins and passwords and are not affected.
Where the panel writes to you. It can also receive DMARC reports — your choice, under DMARC reports.
Changing it signs out every other session of this account; this one stays signed in.
Used by every outbound domain whose report address is set to admin's default — 2 of your 3 now. Changing it changes the DMARC record those domains must publish. The hosted address is parsed by SelfPost; any other just receives the raw XML.