Robert Half email hacked.

Got this email from Robert Half today:
Dear Valued Customer,

Today we were informed by Epsilon Interactive, our national email service provider, that your email address was exposed due to unauthorized access of their system. Robert Half uses Epsilon to send marketing and service emails on our behalf.

We deeply regret this has taken place and any inconvenience this may have caused you. We take your privacy very seriously, and we will continue to work diligently to protect your personal information. We were advised by Epsilon that the information that was obtained was limited to email addresses only.

Please note, it is possible you may receive spam email messages as a result. We want to urge you to be cautious when opening links or attachments from unknown third parties. We ask that you remain alert to any unusual or suspicious emails.

As always, if you have any questions, or need any additional information, please do not hesitate to contact us at customersecurity@rhi.com.

I got the same email from 1-800 Flowers and Chase!