Route.
Mail to where it needs to go.
Email rarely sits still. Domains get migrated. Companies get acquired. Universities maintain alumni addresses for life. Outages and maintenance windows happen, and mail still has to land somewhere. These are the products that handle the routing problem, across migrations, outages, and lifetime address commitments.
Five products, one routing engine
Email Forwarding
Reliable email forwarding for domains and individual addresses. Catch-all support, multi-recipient routing, spam filtering before the forward so you don't inherit a spam pipe.
Alumni Forwarding
Lifetime alumni email forwarding for colleges and universities. Institutional addresses (name@yourdomain.edu) kept alive for life, at a fraction of the cost of giving every alum a Workspace or M365 mailbox.
Backup MX
Secondary MX with queueing and replay. When your primary mail server is down (planned or unplanned), Backup MX accepts incoming mail, holds it, and replays once your primary is back. No bounces, no lost messages.
Tenant Migration
Microsoft 365 and Google Workspace tenant migrations. Backup MX serves as the cutover safety net so mail doesn't get dropped during the transition. Built because customers asked us for help with migrations the big migration vendors wouldn't fit at their tier.
Message Replay
45-day rolling email archive that lets you replay lost, missing, or wrongly-routed messages with a single click. The recovery layer that supports tenant migrations, phishing-protection takedowns, and spam-filtering false positives.
Same engineering team, no vendor handoffs
Routing problems share a common shape: mail is in flight, and the path it's supposed to take is changing. A primary mail server goes down, Backup MX takes over until it's back. A company moves from one M365 tenant to another, Tenant Migration uses Backup MX as the cutover buffer, and Email Forwarding handles the legacy address continuity. A university wants alumni to keep their .edu addresses indefinitely without paying per-seat, Alumni Forwarding is Email Forwarding scaled for lifetime institutional commitments. Message Replay is the per-message recovery layer behind all of it.
Same engineering team across the lineup. The team that runs your Backup MX is the team that runs your migration cutover. There's no handoff between vendors when the cutover gets messy.
The audience
- IT teams running Microsoft 365 or Google Workspace tenant cutovers that can't afford bounced mail during the transition
- Acquiring organizations absorbing another company's email and needing forwarding/migration continuity
- Universities and colleges that promise alumni lifetime email and need an affordable way to honor it
- Operations teams running their own primary mail infrastructure who want a queueing safety net behind it
- Domain owners consolidating or splitting domains and needing forwarding to bridge the change
We're not the right answer if
You need a full collaboration suite migration (calendars, drives, Teams/Spaces, SharePoint). DuoCircle Tenant Migration handles the mail-side cutover but the full collaboration cutover is a specialist function.
You only need consumer-style email forwarding (one personal domain, a handful of addresses). Simpler consumer-grade forwarding services may fit your needs at a lower cost.
Talk to an expert about your routing or migration plans
Same-day response. Real expert on the call. We tell you the timeline, the risks, and the safety net.