Release Date: February 1, 2017
Install Link: https://login.salesforce.com/packaging/installPackage.apexp?p0=04td0000000szfa
Soapbox Mailer 1.10 includes the following changes:
Increases the field sizes to their maximum limit for the Email Template's Edit HTML Body field and the Campaign's Edit HTML Body field.
If you have questions about the new features, let us know!