Every account, one board
Email Aggregator App for Every Email Account
Pull Gmail, Outlook, iCloud, Yahoo, and any mail on your own domain into one board over IMAP. An AI model reads each message as it lands, gives it a category, and flags the spam, so you aggregate your accounts and sort them in the same step.
Any IMAP provider · AI category + spam per message · Two-way sync
In short
An email aggregator combines the mail from several accounts into one inbox so you stop logging into each provider separately. Inboxes is an email aggregator built for people running more than one mailbox: it connects Gmail, Outlook, iCloud, Yahoo, and any IMAP account onto a single board, keeps every account distinct so replies leave from the right address, and has an AI model read each incoming message to assign it a category (work, personal, receipts, newsletters, notifications) and decide whether it is spam. It runs in the browser with nothing to install, and your mail stays on its current provider.
Aggregates mail from
Which kind you mean
Two different things go by "email aggregator"
The word covers two opposite jobs. Knowing which one you are shopping for saves you from buying the wrong tool.
// Email account aggregator
Your own mailboxes, combined
This is the common meaning and the one Inboxes is built for. You have several accounts (a personal Gmail, a work domain, an old Yahoo) and you want them in one inbox instead of four logins. The aggregator connects to each and merges the mail while keeping the accounts distinct.
// Email newsletter aggregator
Subscriptions, pulled into a feed
A different product. It collects the newsletters you subscribe to into a separate reading feed to keep them out of your main inbox. If that is what you want, a read-it-later reader is the right tool. Inboxes handles newsletters by batching them into their own category, not by turning them into a feed.
The three ways people try this
Forwarding, a desktop client, or a browser aggregator
Most people reach for forwarding first, discover what it breaks, then look for a real aggregator. Here is the honest tradeoff.
| What happens to your mail | Forward everything to one account | Desktop client (Thunderbird, Mailbird) | Browser aggregator (Inboxes) |
|---|---|---|---|
| Accounts stay separate | No, merged into one | Yes | Yes |
| Replies leave from the right address | Only with send-as setup | Yes | Yes |
| Works on any machine, nothing to install | Webmail only | Tied to the installed machine | Yes |
| Sorts the mail as it arrives | No | Manual filters and rules | AI categorizes every message |
| Mail stays on its original provider | No, redirected away | Yes | Yes, read over IMAP |
Forwarding is the tempting shortcut because it is free and already built into Gmail and Outlook. It also melts your accounts into one and you cannot get them back apart, which is why it is the option people most often regret.
What the aggregator does
Combine the accounts, then triage them
Aggregating your mail is the table stakes. Sorting it is the part that gives you back the hours.
One board, every account
Connect any number of IMAP mailboxes and read them in one place, each message labeled with the account it arrived at so your identities never blur together.
AI categories, applied on arrival
Work, personal, receipts, newsletters, and notifications, assigned from what each message actually says, across all your accounts at once. No folder tree to build and no rules to maintain.
Spam your provider missed
Junk and phishing get flagged on content, catching the things that slip past a provider filter tuned for volume rather than for you. Flagged mail is set aside, never deleted.
Threads across addresses
A conversation that touched two of your addresses is one thread, not two half-conversations you reconcile in your head. One search covers every mailbox.
Two-way sync, nothing migrated
Read, archive, and reply from the board and the change syncs back to the real mailbox. Your mail keeps living on Gmail or Outlook exactly as before.
In the browser, on any machine
Nothing to install. The same aggregated, sorted board follows you to a second laptop, a borrowed computer, or a locked-down work machine.
How it works
Connect the accounts, the aggregation starts immediately
Nothing is migrated and nothing is installed. Your mail keeps living on its current provider while you work from one sorted board.
> 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.
Who buys this
Worth paying for when the logins are a work problem
An aggregator earns its price when you are losing real hours to jumping between inboxes. One account with light mail does not need one.
Freelancers and consultants
A personal address, a business domain, and a client alias or two. The work mail and the receipts separate themselves, so invoicing week stops being a search-and-rescue mission.
Founders and operators
You are on hello@, your own name, and two legacy domains you cannot retire. One aggregated board with categories beats four tabs and the nagging sense something is unanswered.
Bookkeepers and accountants
Receipts, statements, and client threads land at several addresses. Aggregating them and auto-categorizing the receipts turns month-end from a hunt into a filter.
Agencies
Every client hands you another login. Aggregating them over IMAP puts the whole portfolio on one board without asking anyone to migrate their mail.
Anyone on a locked-down machine
If you cannot install a desktop client, a browser-based aggregator is the only unified inbox available to you. Nothing to install, on any machine you sit down at.
Anyone drowning in notifications
Newsletters and system notifications get batched out of the way automatically, so the mail from actual humans is what is left in front of you.
FAQ
Questions people ask about email aggregators
What is an email aggregator?
An email aggregator is software that pulls the mail from several email accounts into one place so you read and reply from a single view instead of logging into each provider. A good one keeps every account distinct underneath, so replies still leave from the right address, while merging the list, the search, and the sorting across all of them.
What is the best email aggregator app?
The best one depends on your problem. If you just want your accounts stacked in one list, your phone Mail app or Thunderbird does that at no cost. If your problem is volume across many mailboxes, you want an aggregator that also triages: Inboxes connects every IMAP account to one board and has an AI model read each message to categorize it and flag spam.
Is there an app that combines all your email accounts?
Yes. Several do, from desktop clients like Thunderbird and Mailbird to browser-based tools. Inboxes is a browser-based aggregator: you connect Gmail, Outlook, iCloud, Yahoo, and any mail on your own domain over IMAP, and the combined board is sorted by AI, with nothing to install on any machine.
What is the difference between an email aggregator and an email newsletter aggregator?
They solve opposite problems. An email account aggregator combines your own mailboxes into one inbox. An email newsletter aggregator collects the newsletters you subscribe to into a separate reading feed to keep them out of your main inbox. Inboxes is an account aggregator: it batches newsletters into their own category rather than turning them into a feed.
Is it safe to use an email aggregator?
It is as safe as the vendor you pick, so the questions to ask are where your credentials are stored, whether your mail is moved off your provider, and what is done with it. Inboxes reads your mail in place over IMAP rather than migrating it, uses the AI only to categorize and de-spam each message, and does not train models on your mail or use it for advertising.
Can I aggregate Gmail and Outlook in one inbox?
Yes. Gmail and Outlook each only combine their own accounts, so running both means two piles. An aggregator sits above the providers: Inboxes connects Gmail, Outlook, and any other IMAP mailbox onto one board and applies one consistent AI sort across all of them at once.
Aggregate every account on one board
Connect your mailboxes over IMAP and every message that lands gets read, categorized, and de-spammed before you open the board.