Built by a cold emailer, for cold emailers. The top infrastructure provider for ethical cold email.
Every inbox is fully configured for maximum deliverability, with SPF, DKIM, DMARC, and MX records properly set up. We handle the entire technical configuration—DNS, authentication protocols, and policy enforcement—so no technical expertise is required. Your cold emails are ready to reach the inbox from day one.
We are not breaching Google or Outlook's TOS to provide these inboxes. We are not running on a public cloud with risk of being shut down by that provider. All hardware and subnets are owned outright by MailMountains. We own 100% of the infrastructure, bringing the risk of being shut down to zero.
Our dedicated support team is available 24/7 to assist with any questions or concerns you may have. Beyond answering tickets, we proactively monitor the health of your inboxes in real time. This includes tracking key performance signals, deliverability metrics, and reputation indicators across all accounts.
Choose the plan that best fits your agency needs. Scale up or down
as your business grows.
Ideal for established agencies or large enterprises that need high volume.
Find answers to common questions about MailMountains and our services.
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