> ## Content Index > Fetch the complete content index at: https://dailyhassle.com/llms.txt > Use this file to discover other available public pages before exploring further. # Switching from Microsoft 365 to Infomaniak with Confidence and Minimal Disruption - URL: https://dailyhassle.com/switching-microsoft-365-infomaniak/ - Published: 2026-10-14T11:29:57.000Z - Updated: 2026-10-14T11:29:57.000Z - Author: Daniel Mount - Tags: Microsoft 365 If you're [considering switching your email](https://dailyhassle.com/migrate-email-microsoft-office-365/) and cloud services from Microsoft 365 to Infomaniak, this guide will help you make the move without losing data or disrupting your business. We'll cover how to prepare your Microsoft 365 data for migration, step-by-step instructions to transfer emails, contacts, and calendars, setting up your Infomaniak account, updating DNS and MX records to keep email flowing, and common issues to watch for. Following these steps carefully will help ensure a smooth transition. ## What do I need to prepare before switching? Before starting the migration, [review your Microsoft 365](https://dailyhassle.com/key-differences-microsoft-office-365-plans/) environment thoroughly. List all email accounts, distribution lists, shared mailboxes, calendars, and contacts that must move to Infomaniak. Check mailbox sizes and note any special settings like forwarding rules or filters. Back up critical data by exporting mailboxes to PST files or using Microsoft’s export tools. These backups serve as a safety net if anything goes wrong during migration. Ensure you have administrator access to both your Microsoft 365 tenant and your domain registrar to manage DNS settings. Also, review Infomaniak’s plans and features to choose the right service tier. Confirm your Infomaniak account is set up and that you have credentials to manage mailboxes and DNS configurations. ## How do I migrate my emails, contacts, and calendars? Migrating your data requires exporting from Microsoft 365 and importing to Infomaniak. 1. In Outlook connected to Microsoft 365, export emails, contacts, and calendars: go to File > Open & Export > Import/Export > Export to a file > Outlook Data File (.pst). Select the folders, contacts, and calendars you want. 2. Prepare the PST files for import. Infomaniak supports importing these through its webmail interface or by syncing via IMAP. 3. To import via webmail, log in to Infomaniak Mail, and use the import tool to upload PST files for each user. 4. Alternatively, use an IMAP migration tool like imapsync to transfer emails directly between Microsoft 365 and Infomaniak accounts. 5. Test the process first with a single mailbox to make sure all data transfers correctly before moving all users. Large mailboxes can take significant time to migrate, so schedule this during low-traffic periods. Make sure to include shared mailboxes in your plan. Since some tools don’t migrate shared mailboxes directly, you might need to assign them temporarily to user accounts or export their data separately for manual import. Remember that calendar and contact data may not transfer perfectly, especially if Microsoft 365 features are used that don’t export fully. Review these after migration and fix any gaps manually. ## How do I configure Infomaniak for my business needs? While your data migrates, configure Infomaniak to support your workflows. 1. Create user accounts in the Infomaniak admin console that correspond to your existing users. Assign mailboxes and set storage quotas as needed. 2. Set up groups, distribution lists, and shared mailboxes to match your current setup. 3. Configure calendar sharing and contact synchronization if your team depends on collaboration features. 4. Turn on security features like two-factor authentication and spam filtering to protect your users. 5. Set up email signatures, filters, and forwarding rules to replicate your Microsoft 365 environment. 6. Update settings on mobile devices and external email clients to connect to Infomaniak’s servers after migration completes. ## How do I update DNS and MX records to avoid email downtime? Updating your DNS and MX records correctly is critical to prevent loss of email. 1. Lower the TTL (Time To Live) on your DNS records 24 to 48 hours before switching. This speeds up DNS propagation. 2. When you’re ready, change your domain’s MX records from Microsoft 365 to Infomaniak’s mail servers. Use the exact MX values Infomaniak provides. 3. Update SPF, DKIM, and DMARC records to authorize Infomaniak’s servers for sending mail from your domain. 4. After making these changes, monitor email flow closely. DNS caching means some emails may still route to Microsoft 365 briefly. 5. Keep your Microsoft 365 service active during this overlap period to catch any delayed messages, then disable it once you’re confident all mail is arriving in Infomaniak. Changing MX records too early or without lowering TTL can cause email downtime or lost messages. ## What common issues should I watch out for and how do I fix them? During migration, watch for these common problems: - Incomplete exports: Verify your PST files open correctly and contain all emails, contacts, and calendars. - IMAP sync errors: Double-check server addresses, usernames, and passwords before starting migration. - DNS mistakes: Confirm MX, SPF, DKIM, and DMARC records are accurate to avoid mail delivery failures. - Access problems: Ensure users get updated login details and understand any new two-factor authentication processes. - Calendar and contact glitches: Proprietary Microsoft 365 features might not transfer fully; expect some manual fixes. If issues arise, review each step carefully, consult Infomaniak’s support resources, and consider migrating one mailbox at a time to isolate problems. Also, verify the migration succeeded by logging into Infomaniak mailboxes and confirming all emails, contacts, and calendars are present and accessible before fully switching off Microsoft 365. ## Conclusion Start by backing up your Microsoft 365 data and understanding Infomaniak’s services. Export and import emails, contacts, and calendars carefully, testing with a single mailbox first. Set up your Infomaniak environment to fit your team’s needs. Plan DNS changes carefully to avoid downtime and keep Microsoft 365 active during the transition as a fallback. Monitoring each stage closely reduces risks and helps keep your business communications uninterrupted. ## Frequently Asked Questions ### Can I migrate shared mailboxes from Microsoft 365 to Infomaniak? Shared mailboxes often require special handling because some migration tools don’t support them directly. You may need to assign shared mailboxes temporarily to user accounts or export their data separately before importing it into Infomaniak. ### Will my calendar invites and meeting details transfer correctly? Basic calendar events typically export and import fine via PST files. However, complex recurring meetings or Microsoft 365–specific features might not transfer perfectly. Review calendars after migration and manually recreate any missing details if needed. ### How long does the DNS propagation take after changing MX records? Propagation time depends on your previous TTL settings but usually ranges from a few minutes up to 48 hours. Lowering TTL before the switch helps reduce this period and minimize downtime. ### Is it possible to switch back to Microsoft 365 if issues occur? Yes. To switch back, you would reverse the DNS changes and possibly re-import data into Microsoft 365\. Keep your Microsoft 365 subscription active during migration as a fallback until you’re sure the move succeeded.