How to Migrate Yandex to Office 365

You want your Yandex mail inside Office 365 without losing a single folder, and your first connection attempt fails. Yandex blocks outside apps until you enable IMAP and create an app password, and every method below hits that wall first. Set up Yandex, choose one of three ways to migrate Yandex to Office 365 and your mail lands in Outlook within hours.

How to prepare Yandex before you migrate Yandex to Office 365?

Enable IMAP, turn on app passwords and create one app password. Without all three, no admin tool, Outlook or software can read your Yandex mailbox.

1. Open Yandex Mail and go to Settings, then Email clients.
2. Under Use a mail client to retrieve your Yandex mail, select IMAP for imap.yandex.com.
3. Turn on App passwords and OAuth tokens. Save changes.
4. Open your Yandex ID security page, select app passwords and create one for Mail. Give it a name.
5. Copy your password right away. Yandex shows it once, and a lost one must be deleted and created again.

Yandex lists these values in its mail client settings. POP3 is deprecated, so use IMAP only. If web login works but a client still fails, you have not accepted Yandex's User Agreement. Log in on Yandex Mail's website once and try again.

How to migrate Yandex to Office 365 with Microsoft IMAP migration?

Create a batch in Exchange admin center that moves Yandex mail to Office 365 over IMAP. It costs nothing extra with Office 365 and needs tenant admin access.

1. In Microsoft 365 admin center, create and license a mailbox for every user you move.
2. Open Exchange admin center, select Migration and add an endpoint of type IMAP. Use imap.yandex.com, port 993 and SSL.
3. Create a CSV file. List your Office 365 address, Yandex user name and Yandex app password for every mailbox.
4. Add a migration batch, choose IMAP migration, upload your CSV and start it.
5. Watch batch status until it reports mail synced.

Microsoft documents limits in migrating IMAP mailboxes to Microsoft 365. It migrates email in Inbox and other folders, newest to oldest. It does not migrate contacts, calendar items or tasks. Mailboxes hold up to 500,000 items, and a message cannot exceed 35 MB.

Catch: you need admin rights, a CSV and a licensed mailbox for every user. Single account owners find that heavy.

How to migrate Yandex to Office 365 with Outlook drag and drop?

Add Yandex and Office 365 accounts to classic Outlook, then drag Yandex mail into your Office 365 mailbox. It costs nothing and needs no admin console.

1. Open classic Outlook for Windows. Turn off your new Outlook toggle if it is on.
2. Select File, Add Account and add your Office 365 mailbox.
3. Select Add Account again, choose manual setup, then IMAP. Enter imap.yandex.com, port 993, SSL, and smtp.yandex.com, port 465, SSL. Sign in with your Yandex user name and app password.
4. Wait while Yandex folders sync.
5. Open a Yandex folder and press Ctrl+A. Drag messages onto a matching folder in your Office 365 mailbox, not onto your account name.
6. Repeat in batches. Sign in at outlook.office.com to confirm mail arrived.

Yandex warns against creating subfolders inside Inbox from a mail client, so build new folders in Office 365 instead. A university IT guide shows the same drag and drop between accounts and advises batches for large inboxes.

New Outlook blocks it. On Microsoft Q&A, a user could not copy mail between accounts, and a Microsoft moderator replied that a tenant policy named ItemsToOtherAccountsEnabled is off by default. Classic Outlook ignores that policy, and an admin can turn it on for new Outlook.

Catch: you move folders by hand, and contacts and calendar stay behind. Our guide on how to download IMAP emails from server covers sync settings that speed it up.

Steps to migrate Yandex to Office 365 with software

1. Install it on a Windows PC and run it as administrator.
2. Select source. Enter your Yandex address and app password. If it finds no settings, enter imap.yandex.com and port 993.
3. Select destination. Choose Microsoft 365 and sign in through Microsoft's consent window.
4. Tick folders you want and skip Spam and Trash.
5. Narrow by date, sender, subject, body text, attachment or size if needed.
6. Choose a destination mailbox type: primary, archive, shared or public folder.
7. Start migration. It skips duplicates, resumes after a dropped connection and saves a CSV report when runs end.

Source access is read only, so Yandex mail stays untouched until you close that account. Moving many users? A CSV file can list many source and destination pairs. IMAP carries mail folders, so check contacts and calendar items in demo mode before you promise them. Corbett lists them among supported item types, and you can test them on a small batch. Going to Google instead? See how to move Yandex mail to Gmail.

Which way to migrate Yandex to Office 365 is best?

Use Microsoft IMAP migration for admins moving mail only, Outlook drag and drop for one mailbox and software for filters, many users or large archives.

Already in Gmail? See how to migrate Gmail emails to Office 365.

Why does Yandex to Office 365 migration fail?

Yandex rejects your login

Enable IMAP, turn on app passwords and use an app password. A Vivaldi user got "invalid credentials or IMAP is disabled" and fixed it by creating an app password in Yandex.

Web login works but client fails

Accept Yandex's User Agreement by logging in on its website. Yandex says to check that app passwords and IMAP are both on, and that your clock and certificates are current. See Yandex's email client troubleshooting guide.

Yandex mail is missing in Office 365

Microsoft migrates newest mail first, so large mailboxes finish late. Messages over 35 MB do not move. Mailboxes above 500,000 items need splitting by folder.

Folders vanish or sent mail is missing

Yandex says POP3 does not sync properly. Delete any POP3 account and add Yandex again as IMAP. Check Yandex filters that delete or redirect mail.

Drag and drop fails in new Outlook

Switch to classic Outlook, or ask your admin to enable ItemsToOtherAccountsEnabled in your mailbox policy.

What to do after you migrate Yandex to Office 365?

Compare folder counts and message totals, then open mail with attachments. Keep your Yandex account until counts match. Export contacts and calendar from Yandex and import them into Outlook, because IMAP does not carry them. Save a local copy of your Office 365 mail with our guide on how to save Outlook 365 emails to hard drive.

Questions about migrate Yandex to Office 365