MailingListId
ID of the mailing list to which the contact belongs.
stringMailingListId (string)
ID of the mailing list to which the contact belongs.
Example:
ML_1234567890AbCdEMailingListId
"ML_1234567890AbCdE"
ID of the mailing list to which the contact belongs.
ID of the mailing list to which the contact belongs.
ML_1234567890AbCdE"ML_1234567890AbCdE"