Mobile Locker Email Infrastructure

Mobile Locker uses Mailgun to send emails.

How can we ensure our employees receive emails from Mobile Locker?

Your company may have an email protection system such as Proofpoint or Mimecast. These systems may erroneously block incoming emails from Mobile Locker.

Please ask your IT department to allow all inbound emails from these IP addresses and domains:

Mailgun Articles and Resources

• The Basics of Subdomains and How to Use Them
• Domain reputation or IP reputation: Which one does Gmail care about more?
• Gmail and Yahoo Inbox Requirements & What They Mean for Senders
• Spam filters and deliverability: Staying on the good side of mailbox providers (November 2024)
• How to avoid landing in an email blocklist: Best practices
• Key takeaways from Mailgun's State of Email Deliverability 2025 (November 2024)
• Email marketing deliverability: Whose job is it anyway? (December 2024)