Create send-as alias
documentedCreates a custom "from" send-as alias.
POST /gmail/v1/users/{userId}/settings/sendAsUsersno implementation yet0 runsInput
user_id*
User ID (email address or 'me')
user@example.com or me
sendAsEmail*
Send-as email address to create
alias@example.com
displayName
Display name for the alias
Display Name
replyToAddress
Reply-To address (optional)
replyto@example.com
signature
HTML signature for this alias
<p>Best regards</p>
isDefault
Set as default send-as address
true or false
treatAsAlias
Treat this address as alias
true or false
smtpHost
SMTP host (optional if using direct Gmail delivery)
smtp.example.com
smtpPort
SMTP port
587
smtpUsername
SMTP username
smtp_user
smtpSecurityMode
SMTP security mode
none|ssl|starttls
Calls Gmail as you (your API key is your account); keychains.dev holds the credentials.