One client, every account
Email Client for Multiple Accounts, Sorted by AI
Stop hopping between Gmail, Outlook, and three other logins. Inboxes is an email client for multiple accounts that puts every IMAP mailbox on one board, and AI reads each message to categorize it and flag spam before you ever look.
Any IMAP provider · AI category + spam per message · Two-way sync
In short
Inboxes is an email client for multiple accounts: you connect Gmail, Outlook, Yahoo, iCloud, and any IMAP mailbox into one unified inbox, and AI reads every message to sort it by category and flag spam. You manage all your accounts from a single board instead of switching between apps, and everything syncs both ways with your providers.
Connect accounts at
Why one client
Built for people who run five inboxes, not one
Most email apps are fine for a single account and fall apart when you add a second work address, a side project, and a personal account. This is built for exactly that.
Every account on one board
Gmail, Outlook, Yahoo, iCloud, your work account, your own domain: connect them all over IMAP and read them in one place. Each message is labeled with the account it belongs to, so nothing gets confused.
AI sorts it before you look
A model reads every incoming message and assigns a category (work, personal, receipts, newsletters, notifications) and a spam verdict. The board you open is already triaged instead of a raw pile from five providers.
Threads and search across accounts
Conversations stay threaded even when they span two of your addresses, and one search covers every mailbox at once. Tag anything and filter the whole board by category in a click.
Two-way sync, nothing to migrate
Read state, new mail, and moves flow back to each provider, so Inboxes is a real client rather than a snapshot. Your mail keeps living where it does now; you just get one place to work from.
How it works
Add your accounts, let AI sort them
No install, no migration. You connect each mailbox over IMAP and the AI takes it from there.
> connecting your mailboxes over IMAP
Connect your mailboxes
Add each account with its IMAP server and credentials: Gmail, Outlook, Yahoo, iCloud, your own domain, anything that speaks IMAP. Add as many as you like. Inboxes reads them; your mail keeps living on your own provider.
> AI categorizing + flagging spam
AI sorts every message
As mail arrives, Gemini reads it and assigns a category and a spam verdict. Newsletters, receipts, work, and personal mail land in the right place, and junk is flagged, so the unified board you open is already triaged instead of a raw pile.
> one board, threaded and in sync
Work from one board
Read, tag, thread, and search across every connected account from a single view. Everything syncs back to the server continuously, so your mailboxes stay consistent whether you open Inboxes or the provider directly.
How this compares
Unified inbox, desktop client, or just tabs
The three common ways people handle multiple accounts, and where each one wins.
| Approach | Works everywhere | AI sorting | Best for |
|---|---|---|---|
| Inboxes | Yes, any browser | Yes, on every message | Anyone juggling several accounts who wants them triaged |
| Desktop client (Thunderbird, Mailbird) | One device at a time | Rules you maintain | People who live in one machine and like manual folders |
| Provider tabs (Gmail, Outlook web) | Yes, but one login each | Provider filter only | Someone with a single primary account |
FAQ
Questions people ask
The best email client for multiple accounts is the one that shows every account on a single board, clearly marks which account each message belongs to, and works with any provider you use, not just Gmail and Outlook. Inboxes adds AI that categorizes each message and flags spam, so the combined inbox arrives already sorted.
Yes. Inboxes connects each account over IMAP and merges them into one unified inbox. You read, reply, tag, thread, and search across Gmail, Outlook, Yahoo, iCloud, and mail on your own domain from a single view, and every change syncs back to the provider.
Free desktop clients like Thunderbird and the built-in phone Mail apps can combine accounts, but they run on one device and sort with rules you maintain by hand. Inboxes is paid and web based: it works from any browser and uses AI to categorize and de-spam every message automatically.
Add each account with its IMAP server and credentials, and Inboxes pulls all of them onto one board. Nothing is migrated and nothing is deleted; your mail keeps living on its current provider while you work from a single, sorted inbox across all of them.
Yes. You can connect several Gmail accounts alongside Outlook, Yahoo, iCloud, or any other IMAP mailbox, and each one is labeled on the board so you always know which account a message hit. AI sorting runs across all of them at once.
Related: all your email accounts in one place, or read how to manage multiple email accounts.
One client for every account you have
Connect your mailboxes and let the AI sort them from the first message.