You are moving mail from IONOS to Proton, outside our packaged “all Infomaniak” path. InfoSwitch runs these programmes under the UEswitch line: technical analysis, controlled history copy, DNS and user support—with fees noticeably higher than standard Infomaniak migrations because each source/target pair needs bespoke scoping.
EU-to-EU provider change
From IONOS to Proton: similar macro-region, yet different tooling, quotas and DNS. The priority is service continuity and clean history migration.
IONOS specifics
We inventory mailboxes, aliases and forwards in the IONOS panel, then plan IMAP copy to Proton respecting target quotas and spam policy.
- Domain bundles — SKU limits checked before we commit to schedules.
Proton Mail target
Proton focuses on encryption and privacy: depending on the plan, official IMAP import tooling has limits (volume, Business features). We size a realistic path from IONOS and set expectations (Bridge app, Proton clients).
UEswitch method (Proton)
Audit & inventory
Mailboxes, volume, aliases, critical rules and maintenance windows.
Target provisioning
Proton account creation, send/receive tests, folder plan.
Sync & deltas
IMAP copy (or adapted tooling), iterative passes, pilot sampling.
DNS cutover
MX, SPF, DKIM, DMARC; TTL reduction; coexistence if required.
Clients & hypercare
Desktop/mobile reconfiguration, internal FAQ, short project hotline.
UEswitch pricing
Cross-provider work needs more engineering than our standard Infomaniak migrations. Public Infomaniak-oriented pricing does not apply as-is: bespoke quotes, typically materially higher, scaled to volume and criticality.
Third-party brands
IONOS, Proton AG / Proton Mail are trademarks of their respective owners. InfoSwitch provides independent migration engineering services.
UEswitch quote
Share volume and constraints: we reply with an indicative timeline and budget range.