We (Mailgun) have a process to support EU model clauses that has allowed us to continue supporting most of our EU customers. There are a lot of nuances to all of this, so it's best to talk to someone on our team who has expertise and access to our legal team to come up with a plan for you.

Additionally, the landscape will change on this once Privacy Shield, the successor to Safe Harbor, is enacted. It will offer stronger protections and guarantees to EU customers without the need to have model clauses signed between entities.

Our sales team sales [at] mailgun [dot] com can talk to you about your specific situation.