Setup Guide

Connect your inbox in 5 minutes

MailMaster connects to Gmail, Outlook, Apple Mail, Yahoo, iCloud — and any email provider — using App Passwords. No data leaves your device.

What is an App Password?

An App Password is a special 16-character code your email provider generates for third-party apps. It gives MailMaster access to your email without sharing your real password. You can revoke it at any time in your account settings.

Gmail
Requires 2-Step Verification to be enabled
  1. Go to myaccount.google.com
  2. Click Security in the left sidebar
  3. Under “How you sign in to Google”, click 2-Step Verification (enable it if not already on)
  4. Scroll down to App passwords and click it
  5. Under “Select app” choose Mail — under “Select device” choose Other and type “MailMaster”
  6. Click Generate — copy the 16-character code
  7. In MailMaster: Add Account → Gmail → paste your email + the App Password (not your real Gmail password)
Outlook / Microsoft 365 / Hotmail
Hotmail, Live.com, Outlook.com, and Microsoft 365 accounts
  1. Go to account.microsoft.com
  2. Click Security at the top
  3. Click Advanced security options
  4. Under “App passwords”, click Create a new app password
  5. A 16-character password will be shown — copy it immediately (only shown once)
  6. In MailMaster: Add Account → Outlook/IMAP → paste your email + the App Password
Note for Microsoft 365 (work accounts): Your IT admin may need to enable app passwords for your organisation. If the option isn’t visible, contact your IT department.
iCloud / Apple Mail
@icloud.com, @me.com, @mac.com addresses
  1. Go to appleid.apple.com and sign in
  2. Under “Sign-In and Security”, click App-Specific Passwords
  3. Click the + (plus) icon
  4. Name it “MailMaster” and click Create
  5. Your App Password appears — copy it (it won’t be shown again)
  6. In MailMaster: Add Account → Apple Mail / IMAP → paste your @icloud.com address + the App Password
Requires 2FA: Apple requires two-factor authentication to be enabled before you can create App-Specific Passwords. You can enable it at appleid.apple.com.
Yahoo Mail
@yahoo.com addresses
  1. Go to account.yahoo.com
  2. Click Security
  3. Under “Generate app password”, select Other app from the dropdown
  4. Name it “MailMaster” and click Generate
  5. Copy the 16-character password shown
  6. In MailMaster: Add Account → Yahoo / IMAP → paste your Yahoo address + the App Password
ProtonMail, Fastmail, Zoho & custom domains
Any provider that supports IMAP/SMTP
  1. Log in to your email provider’s account settings
  2. Find Security → App Passwords (exact wording varies by provider)
  3. Generate a password for MailMaster
  4. In MailMaster: Add Account → IMAP/SMTP → enter your email address, the App Password, and your IMAP/SMTP server settings from your provider
Need your IMAP settings? They’re usually in your provider’s help centre under “IMAP access” or “Set up email client”. Common: port 993 (IMAP SSL), port 587 (SMTP TLS).
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Stuck? We’ll help you connect.

Email us at hello@mailmaster.tech with your email provider and we’ll walk you through it — usually within a few hours.

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