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Expert Email Migration Services for UK Businesses
Move your mailboxes to Microsoft 365 with zero downtime — from Exchange, POP3, IMAP, Lotus Notes or Zimbra, planned and managed end to end by our team.
Zero-Downtime Cutover
We plan every email migration around your working day, so mailboxes, calendars and contacts move across without interrupting the inbox your business depends on.
Any Source Platform
Exchange, POP3, IMAP, Lotus Notes and Zimbra — our mailbox migration services cover every common source system, migrating you cleanly to Microsoft 365.
Managed Project Delivery
A named project manager runs the migration from discovery through to sign-off, with a clear plan, defined milestones and regular updates throughout.
Email migration services built for UK businesses
Moving business email is one of those projects that looks simple until you start it. Get it wrong and you risk lost messages, broken calendars, duplicated contacts and days of disruption while staff can't find what they need. Our email migration services uk businesses rely on are built to avoid exactly that — a structured, project-managed move to Microsoft 365 that keeps mail flowing throughout, whatever platform you're moving from. Whether you're consolidating multiple domains after an acquisition, retiring an ageing on-premise Exchange server, or simply outgrowing a legacy POP3 or IMAP setup, we plan the cutover around your business hours and confirm every mailbox before we call the project done.
Most of the businesses that come to us for email migration services uk-wide aren't email specialists, and they shouldn't need to be. They know their current setup is holding them back — an on-premise server that needs replacing, a POP3 or IMAP account structure that can't support modern collaboration tools, or an inbox scattered across a legacy platform nobody wants to touch anymore. Our job is to translate that into a plan: which mailboxes move first, what happens to shared calendars and distribution lists, how long the whole business email migration uk project will take, and what "done" actually looks like. We put that in writing before a single mailbox moves, so there are no surprises partway through.
Understanding Email Migration
An email migration moves mailbox data — messages, folders, calendars, contacts and often archived PST files — from a source system to a new destination, almost always Microsoft 365 for UK businesses today. The complexity varies enormously depending on where you're starting from. An on-premise exchange to 365 migration can often run as a hybrid deployment, syncing directories and moving mailboxes in batches while co-existence is maintained. An email migration from pop3 or a straightforward imap email migration to 365 is usually simpler in structure but still needs careful handling of folder mapping, message dates and duplicate detection so nothing is lost or doubled up.
Legacy and Niche Platforms
Not every migration starts from Exchange. We regularly handle a lotus notes to microsoft 365 migration for organisations retiring IBM/HCL Notes environments, extracting NSF mail files and converting them cleanly into Exchange Online mailboxes. We also run zimbra to microsoft 365 migration projects for businesses moving off open-source or hosted Zimbra platforms, mapping folder structures and preserving message history in the process.
Scale and Complexity
Whether it's a handful of mailboxes or a bulk mailbox migration services uk project spanning hundreds of users across multiple sites, the discipline is the same: audit first, migrate in controlled batches, verify, then decommission the old system only once every mailbox is confirmed.
Our approach to business email migration
Exchange Hybrid & Cutover Migrations
For organisations that need continuity during the move, we run an exchange hybrid migration uk deployment — keeping on-premise and cloud mailboxes co-existing and fully mail-flow-connected until every user has moved across, with full support for exchange migration to 365 at any scale.
Zero-Downtime Cutover Planning
Every email migration zero downtime plan we build schedules the final mailbox sync outside working hours, tests DNS and mail routing changes in advance, and keeps a rollback path ready — so Monday morning starts with mail flowing, not a helpdesk queue.
How it works
Our email migration project management keeps every stage visible, from first audit to final sign-off.
1
Audit & Plan
We audit your current mailboxes, domains and data volumes, then build a migration plan and timeline tailored to your business.
2
Prepare
We configure Microsoft 365 tenants, mail routing and directory sync so the destination is ready before a single mailbox moves.
3
Migrate
Mailboxes move in controlled batches, out of hours where needed, with progress tracked and issues resolved as they arise.
4
Verify & Support
Every mailbox is checked for completeness before cutover, with support on hand for the first few days of business as usual.
Businesses turn to us for email migration when
An ageing on-premise Exchange server is due for retirement and needs a clean move to the cloud
Staff are still relying on a basic pop3 or imap mailbox setup that can't keep up with modern collaboration needs
They want predictable, fixed-scope business email migration uk pricing rather than open-ended hourly billing
They can't afford downtime and need an email migration zero downtime plan built around business hours
A merger or acquisition means consolidating multiple email domains and platforms into one tenant
They need a bulk mailbox migration services uk project run across hundreds of users without a single missed message
A legacy platform like Lotus Notes or Zimbra is being decommissioned and mail history needs preserving
They have no in-house resource to manage the project and need someone else to own it end to end
They're unsure whether a cutover or exchange hybrid migration uk approach suits their organisation
Why choose Cloudswitched for cloud email migration?
We've project-managed cloud email migration uk projects across every common source platform — Exchange on-premise and hybrid, POP3, IMAP, Lotus Notes and Zimbra — so whatever you're moving from, we've likely done it before.
Every migration is run by a named project manager, not a rotating queue of engineers, so you always know who owns the plan and who to call if something needs attention.
We build zero-downtime cutovers as standard, scheduling the disruptive parts of the move outside your working hours and keeping a tested rollback plan ready throughout.
Our packages sit alongside our managed IT support plans — from £20/user/month — so once your mailboxes are moved, ongoing support, 24/7 monitoring and cloud backup can continue seamlessly.
Whether you need us for a single-site move or a bulk mailbox migration across offices in Manchester, Birmingham or anywhere else in the UK, delivery is remote-first with the same project discipline throughout.
Email Migration Packages
Every migration is scoped and quoted around your mailbox count and source platform. No hidden fees.
Essentials
Small teams moving a handful of mailboxes
POA/ fixed-scope quote
- Up to 25 mailboxes
- POP3 / IMAP / Exchange source
- Weekend cutover
- Dedicated project manager
- Hybrid co-existence
Most Popular
Business
Growing businesses with mixed mailbox estates
POA/ fixed-scope quote
- Up to 150 mailboxes
- Dedicated project manager
- Zero-downtime cutover plan
- Legacy platform support
- Post-migration support window
Enterprise
Bulk mailbox migration and hybrid deployments
POA/ custom quote
- 150+ mailboxes
- Exchange hybrid co-existence
- Multi-domain consolidation
- Dedicated account manager
Managed Support
Ongoing IT support after your migration completes
£20/user/month
- 24/7 monitoring
- EDR endpoint protection
- Cloud backup included
- 99% SLA guarantee
Why Cloudswitched for email migration?
We treat every mailbox migration as a project with a plan, not a weekend gamble. Here's what sets us apart.
Every source platform covered
Exchange on-premise, hybrid, POP3, IMAP, Lotus Notes and Zimbra — we've migrated mailboxes from all of them, so we know the quirks of each before we start.
Zero-downtime cutovers
We schedule the disruptive part of the move outside working hours and test the plan in advance, so mail keeps flowing while the migration happens behind the scenes.
Named project manager
One person owns your migration from audit to sign-off — no rotating queue of engineers and no chasing for updates.
Full pre-migration audit
We map every mailbox, distribution list and archive before we touch anything, so nothing is missed and the plan reflects reality.
Seamless handover to support
Once your mailboxes are live, we can continue as your managed IT provider — no gap between migration and ongoing support.
Verified, not assumed
Every mailbox is checked for completeness before we decommission the old system — folders, calendars and contacts included.
Data handled securely
Migrations run over encrypted connections with access controls throughout, so mailbox content stays protected in transit and at rest.
Remote-first, UK-wide
We deliver email migration services uk-wide remotely as standard, with on-site visits arranged only where hardware genuinely needs hands.
Fixed-scope quotes
You get a clear quote based on mailbox count and source platform before work starts — no open-ended hourly billing surprises.
Delivering Email Migration Across the UK
We deliver email migration services uk-wide on a remote-first basis, from small teams moving a handful of mailboxes to bulk mailbox migration services uk projects spanning hundreds of users across multiple sites. Directory sync, mail routing and DNS changes are all handled remotely, with on-site visits arranged only where legacy hardware genuinely needs hands-on attention. Businesses in Manchester, Birmingham and every other UK region get the same structured project management and zero-downtime planning as our London clients.
About Cloud Email Migration
Cloud email migration uk projects have accelerated as businesses retire on-premise Exchange servers and move to Microsoft 365 for security, collaboration and cost reasons. The shift isn't purely technical — moving mail is often the first step in a wider move to cloud email, VoIP and cloud backup, and getting it right sets the tone for everything that follows.
Common triggers: An email migration manchester business might be prompted by a server nearing end of life; an email migration birmingham client might be consolidating after an acquisition. Whatever the trigger, the fundamentals are the same — audit, plan, migrate in batches, verify, then decommission.
Getting it right: The businesses that have the smoothest experience are the ones that treat email migration project management as a genuine project, with a named owner, a realistic timeline and a tested rollback plan, rather than a task squeezed in over a weekend.
It also pays to think beyond the mailbox move itself. Once you're on Microsoft 365, the same platform underpins shared calendars, Teams collaboration and cloud file storage, so a well-run cloud email migration uk project often becomes the foundation for a wider move away from ageing on-premise infrastructure. That's why we ask about your broader IT setup during the initial audit, even if the immediate brief is simply "move our email" — it helps us flag anything else that's likely to need attention soon, and means the migration plan fits into your longer-term direction rather than working against it.
Coverage
UK-Wide, Remote-First
From Exchange hybrid deployments to legacy Lotus Notes and Zimbra platforms, we run mailbox migrations for businesses across England, Scotland, Wales and Northern Ireland from our City of London base.
Service
Mailbox Migration Services
mailbox migration services
Structured, audited mailbox migration services covering Exchange, POP3, IMAP, Lotus Notes and Zimbra, delivered by a named project manager from discovery to sign-off.
Deployment
Exchange Hybrid Migration
exchange hybrid migration uk
Co-existence deployments that keep on-premise and Microsoft 365 mailboxes connected during the move, ideal for phased migrations across larger organisations.
Frequently Asked Questions
Got questions about email migration? We've answered the most common ones below. If you need more detail, get in touch.
How much do email migration services cost?
Cost depends on mailbox count, source platform and complexity. A simple move of a handful of mailboxes from POP3 or IMAP costs far less than a bulk mailbox migration services uk project spanning hundreds of users with an Exchange hybrid deployment. We provide a fixed-scope quote after a short audit, so you know the cost before work starts.
Can you really achieve email migration zero downtime?
Yes, in almost every case. We plan the final cutover for outside your working hours, pre-stage mailbox data in advance, and test DNS and mail routing changes before the switch — so users see their mail keep working with minimal, if any, interruption.
How long does an on-premise Exchange to 365 migration take?
A straightforward on-premise exchange to 365 migration for a small business can complete in a few days. Larger environments needing an exchange hybrid migration uk deployment, with co-existence and phased batches, typically run over several weeks so mail flow and directory sync stay stable throughout.
Do I need Exchange hybrid, or can I do a straight cutover?
If you can tolerate a short migration window, a straight cutover email migration from pop3, imap or standalone Exchange is usually simpler and quicker. Exchange hybrid migration uk is worth the extra setup only when you need mailboxes to co-exist across both systems during a longer, phased move.
Can you migrate from Lotus Notes or Zimbra?
Yes. A lotus notes to microsoft 365 migration involves extracting NSF mail files and converting them into Exchange Online mailboxes, while a zimbra to microsoft 365 migration maps existing folder structures and preserves message history. Both are common projects for us.
Do you offer email migration project management, or just the technical move?
Both. Every migration includes email migration project management as standard — a named project manager, a documented plan, defined milestones and regular updates — not just the technical mailbox transfer.
What happens to our old email system afterwards?
We only decommission the old platform once every mailbox has been verified complete on Microsoft 365. Until then, we keep the source system available as a safety net in case anything needs re-checking.
Do you support businesses outside London, like Manchester or Birmingham?
Yes. Our email migration services are delivered UK-wide on a remote-first basis, so an email migration manchester or email migration birmingham business gets the same project management and zero-downtime planning as a client based in London.
Free On Boarding worth up to £2,000!
Limited time offer — valid until 31/05/2026
Get a free quote for your email migration project
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