HAPPEN to buy Microsoft 365 Business Basic for 2.5USD/month/user, which is usually 5USD/month/user.
The hyperlink I used to register on July 26 2020: https://businessstore.microsoft.com/en-us/create-account/signup?OfferId=4f7c74af-24cc-4cb4-b91f-4da6acf69e49&products=cfq7ttc0k59v:0006&ispolaris=1&culture=en-us&country=vn&ali=1
Go passwordless
>>> Passwordless authentication options for Azure Active Directory
Add alias to mailbox
$domain = "2practice.xyz"
Set-Mailbox administrator -EmailAddresses @{add="webmaster@$domain"}
Enable Send As from alias
PS > Connect-ExchangeOnline
PS > Set-OrganizationConfig -SendFromAliasEnabled $True
PS > # Verify
PS > Get-OrganizationConfig| ft SendFromAliasEnabled
SendFromAliasEnabled
--------------------
True
Get-OrganizationConfig
Commonly used administrator's tasks
>>> Audit log search - Default retention policy: 90 days)
>>> Message trace