With the new features we're building for running campaigns on Causes.com, more cause leaders are rallying their communities and emailing actions to their members. Due to this growth, we are upgrading our email-sending infrastructure. As a part of our upgrade, we are making sure that all cause members who have taken action on your cause will receive your emails, but those members who are inactive and are not regularly visiting or taking action on your cause will not. To build your subscriber list and keep it warm, post actions regularly and keep your supporters engaged.