Use the details below when configuring IMAP-to-IMAP migrations using our Email Migration tool in Client Connect. Unless otherwise stated:
- SSL/TLS port is 993 (recommended)
- Non-SSL/STARTTLS port is 143 (only if a provider specifically requires it)
- “SSL required” indicates whether the provider expects SSL/TLS on port 993
Global email providers
| Provider | IMAP hostname | Port | SSL required |
|---|---|---|---|
| Gmail (personal) | imap.gmail.com | 993 | Yes |
| Google Workspace (Gmail) | imap.gmail.com | 993 | Yes |
| Microsoft 365 (Exchange Online) | outlook.office365.com | 993 | Yes |
| Outlook.com / Hotmail / Live | imap-mail.outlook.com | 993 | Yes |
| Yahoo Mail | imap.mail.yahoo.com | 993 | Yes |
| iCloud Mail | imap.mail.me.com | 993 | Yes |
| AOL Mail | imap.aol.com | 993 | Yes |
| Zoho Mail (Global) | imap.zoho.com | 993 | Yes |
| Zoho Mail (EU) | imap.zoho.eu | 993 | Yes |
| Zoho Mail (IN) | imap.zoho.in | 993 | Yes |
| Fastmail | imap.fastmail.com | 993 | Yes |
| GMX | imap.gmx.com | 993 | Yes |
| mail.com | imap.mail.com | 993 | Yes |
Notes
- Gmail/Google Workspace: IMAP must be enabled in mailbox settings. If 2-Step Verification is on, use an App Password for IMAP
- Microsoft 365: Modern auth is standard; for migration tools using basic auth, create an app password (if allowed) or use a migration method that supports OAuth
- Yahoo/AOL: With 2FA enabled, use an App Password
- iCloud: Requires an App-Specific Password
Common UK providers
These are commonly encountered; settings can vary by plan or legacy system. If a connection fails, check the provider’s latest help page or your account portal.
| Provider (UK) | IMAP hostname | Port | SSL required |
|---|---|---|---|
| Virgin Media | imap.virginmedia.com | 993 | Yes |
| BT Internet | mail.btinternet.com | 993 | Yes |
| TalkTalk | imap.talktalk.net | 993 | Yes |
| Sky (Yahoo-backed) | imap.tools.sky.com | 993 | Yes |
| Plusnet | imap.plus.net | 993 | Yes |
| IONOS (1&1) UK | imap.ionos.co.uk | 993 | Yes |
Tip: Some ISP mailboxes are being phased out or require account re-verification before IMAP works. If credentials are correct but login fails, try webmail once to re-confirm the account, then retry the migration.
App passwords
An app password is a one-time, auto-generated password you create in your email/security settings to let older apps or tools (like IMAP migration utilities, desktop mail clients, printers/scanners) sign in without your main account password. It’s used when your account has 2-Step Verification (2FA) or modern OAuth sign-in and the app can’t handle those flows.
Why they exist
- With 2FA on, your normal password alone isn’t enough
- Some apps can’t show the extra verification prompt (code/push)
- An app password acts as a special key that’s limited to IMAP/SMTP/POP and can be revoked at any time—safer than sharing your real password
How they work (IMAPtools)
- You turn on 2FA for the mailbox
- In the account’s security page, you generate an app password (a random 16–24-character string)
- In your migration tool or mail app, you enter:
- Username: your full email address
- Password: the app password (not your normal one)
Good to know
- Scope: App passwords usually bypass 2FA only for legacy protocols (IMAP/SMTP/POP). They don’t grant access to the account’s web dashboard.
- Revocation: You can revoke an app password at any time without changing your main password.
- One per tool: For security, generate separate app passwords for each device/tool.
- Visibility: Most providers only show the app password once—copy it right away.
Provider specifics (quick guide)
- Gmail / Google Workspace: Enable 2-Step Verification → Security → App passwords → choose “Mail” and your device, generate, paste into the migration tool.
- Microsoft 365 / Outlook.com: If the tenant/account allows it, enable 2-Step Verification → Security → Create a new app password. (Some organisations disable app passwords and require OAuth-based tools.)
- iCloud Mail: Turn on two-factor authentication for your Apple ID → appleid.apple.com → App-Specific Passwords → generate, then use with
imap.mail.me.com. - Yahoo / AOL: With 2-Step Verification on, go to Account Security → Generate app password.
- Zoho / Fastmail: Similar flow: enable 2FA → Security → App passwords.
- Proton Mail: Uses Proton Bridge instead of app passwords; Bridge provides its own IMAP/SMTP credentials locally.