Yes - you can! Although we recommend as a best practice to ALWAYS distribute your suppression data securely by using MD5, you can allow one or more trusted partners to access your data in plain text.
To do this, go to the settings of the Mailer and enable Override System Settings and Plain Text Emails from the Mailers Access section.
To learn how to access the settings of a mailer, please review this article: Mailers/Publishers
If you have further questions, please contact us at: firstname.lastname@example.org