Frequently asked questions
If your question isn't here, write to us at [email protected] — we usually reply within 24 business hours.
General
Who is MailSync for? +
Anyone who wants to transfer or consolidate their emails without losing years of correspondence: switching providers, archiving before closing an account, merging several mailboxes. Mostly individuals and small teams.
How long does a migration take? +
It depends on the volume and how fast your provider is. Expect roughly 1 minute per 100 messages on Google, slower on plain IMAP. A mailbox of 50,000 emails can take several hours — you see progress in real time and can close the browser, it keeps running in the background.
Can we try it for free? +
Yes — the free plan lets you connect two mailboxes and run a first migration. No credit card required, no timed trial period.
Security
Do you store our emails? +
No. Messages pass through memory during the copy, then are forgotten. We only keep anonymous fingerprints to avoid duplicates on the next sync.
What about our IMAP passwords? +
They're encrypted with libsodium (XSalsa20-Poly1305) as soon as they're entered, before being stored in the database. The encryption key is isolated from the database. So they can't be displayed in plain text, and read-only access to the database alone isn't enough to compromise them.
What about Google / Microsoft 365? +
We use official OAuth 2.0: we never see your password. You keep control over the permissions granted and can revoke them from your Google or Microsoft account at any time.
Billing
How does billing work? +
Three plans: Free (limited), Premium (fast auto-sync), Pro (multiple mailboxes, API). Monthly payment via Stripe, cancellable at any time from your account.
What happens if I cancel my subscription? +
Your Premium / Pro access runs until the end of the paid period. After that, your account switches to the free plan — your data stays intact, only the premium features are disabled.
Do you offer refunds? +
14-day right of withdrawal for first subscriptions (unless you've already started a premium migration). Beyond that, no prorated refund but no minimum commitment period either.
Didn't find your answer?
A human will reply at [email protected].