Question 1

What is IMAP migration?

Accepted Answer

IMAP migration copies emails, folders and flags from one IMAP server to another — without deleting anything on the source. It works between any two IMAP-capable providers (Gmail, Outlook, Zoho, cPanel, Yandex, Namecheap, custom domains).

Question 2

Is my password safe?

Accepted Answer

Passwords are encrypted at rest with AES-256-GCM using a secret that never leaves the server. They are decrypted only in memory during an active sync and never written to logs. We recommend using app-specific passwords (Gmail / Outlook) rather than your main account password.

Question 3

Can I run multiple migrations at once?

Accepted Answer

Yes — the dashboard supports up to 3 concurrent jobs. Jobs beyond that are queued and picked up automatically as slots free up.

Question 4

What if a migration gets interrupted?

Accepted Answer

Every 10 messages we save resume state (folder + message position). If the server times out, a client disconnects, or the browser closes, the job auto-resumes from exactly where it left off on the next cron tick or when retriggered.

Question 5

How do I avoid duplicate emails?

Accepted Answer

Enable "Skip messages already in destination" — the tool fetches destination Message-IDs up-front and only copies missing ones. Same message never appears twice.

Question 6

Does this work with Gmail?

Accepted Answer

Yes, but you must enable IMAP access in Gmail settings and create an App Password (Google account → Security → 2-Step Verification → App passwords). Use smtp is not needed — only IMAP on port 993.

Question 7

How large a mailbox can it handle?

Accepted Answer

No hard limit — jobs are chunked and resumable, so a 50 GB mailbox with 200k messages is just as safe as one with 500 messages, it simply takes more cron ticks to finish. Typical throughput is 1,000–3,000 messages per 5-minute chunk depending on attachment sizes and the providers.

IMAP Email Migration

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