It is possible to make plain-text like emails, but only by using the ‘Custom HTML’ template which means that you can’t use the blocks or the ‘Drag & Drop’ builder. Unfortunately, Sender.net can not send fully plain-text emails, because due to email regulations, all emails must have an unsubscribe link. And if there is at least one link in the content, it’s automatically converted to HTML. Even though all the emails are sending as HTML, it has plain-text versions for those, whose email inboxes do not support HTML emails. You can check and edit the plain-text version in the very last step of campaign creation.