Unified inbox
All accounts in one chronological feed, or one mailbox at a time from the account switcher.
MailBox: a unified email inbox next to the rest of your company
A real email client inside Nautis. Connect Gmail, Outlook or any IMAP mailbox and read, reply and send from one unified inbox. Multiple mailboxes merge into one chronological feed, AI summarizes threads and drafts replies on your Nautis AI credits, and attachments move to a data room in one click.
- ProvidersGmail + Outlook + IMAP
- Accounts1 / 2 / 5 by plan
- Attachments25 MB per file
MailBox
Tools & Utilities
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What is MailBox?
A unified email inbox merges several mailboxes into one feed so you read and reply from one place. Nautis MailBox connects Gmail, Outlook or any IMAP account, sorts every connected mailbox into one chronological list, and adds AI summaries, suggested replies and task extraction. Your contacts sit in the composer, attachments move to data rooms in one click, and a shared support@ mailbox can be worked by several teammates.
A founder with a personal Gmail, a company Outlook and a hello@ alias checks three tabs before breakfast. MailBox puts them under All accounts, one feed in date order, with the usual folders (Inbox, Starred, Snoozed, Sent, Drafts, Scheduled, Archive, Spam, Trash) and your labels. Pick a single mailbox from the account switcher when you only want one.
It's a real email client, not a viewer. You compose with a rich-text body, choose the From address, schedule a send, keep several signatures per mailbox and attach files up to 25 MB. Keyboard users get the shortcuts they'd expect: C to compose, R to reply, E to archive, J and K to move between threads, / to search.
The reason to read mail inside Nautis is what sits next to it. The To field searches your Contacts directory. An attachment from a lawyer has a Move to Data Rooms button. A thread can be assigned to a teammate instead of forwarded. And the AI features run on Nautis AI credits, never your email provider's quota. Connection details and every shortcut are in the MailBox guide.
Built for
- Founders juggling a personal and a company inbox
- Teams sharing a support@ or hello@ mailbox
- Operators filing investor documents straight from email
Capabilities
What you can do with MailBox
Everything ships out of the box. No setup, no plugins, no extra tools.
AI summary & replies
Summarize thread, Suggest reply, Extract tasks, Translate, and Draft from prompt in the composer.
Shared mailboxes
Manage sharing lets teammates work the same inbox; Assign hands a thread to someone.
Attachments to Data Rooms
Move to Data Rooms on any attachment chip, without downloading and re-uploading.
Scheduled send & signatures
Pick a later send time and keep several signatures per mailbox.
Use cases
How startups use MailBox
Working one support@ mailbox as a team of three
Connect support@ once, then open its card in Email settings and use Manage sharing to add the two teammates. When a refund request comes in, click Assign to hand it to whoever owns billing, so nobody replies twice.
Catching up on a 14-message investor thread
Long threads summarize on their own. The AI summary card gives two to four sentences and an "Action needed" line, so you know before reading a word that the investor is waiting on your updated cap table.
Filing diligence documents straight from email
Your accountant sends last year's statements. Click Move to Data Rooms on the attachment chip and file them into the room investors will open, without downloading and re-uploading.
Declining a meeting without writing the email
Open the composer, click the sparkles icon, choose Draft from prompt and type "Decline politely, propose Tuesday". Then use Rewrite tone… to make it shorter. You read it and press send yourself.
Turning a client thread into work
Use Extract tasks on a thread where the client listed five changes. The AI lists the action items it found, so you can check nothing was missed before you reply.
Quick start
From zero to using MailBox
- 1
Connect a mailbox
Profile & Company, then MailBox, then Connect mailbox. Sign in on your provider's own screen.
- 2
Read in one feed
All accounts shows every connected mailbox together.
- 3
Reply with AI help
Use the AI summary card or the sparkles icon in the composer, then edit and send.
- 4
Share and assign
Share a mailbox with teammates and assign threads instead of forwarding.
The AI assistant inside the inbox
While reading, the AI summary card offers Summarize thread, Suggest reply (a draft dropped into the composer for you to edit), Extract tasks and Translate, which turns the latest message into one of 10 languages. While writing, the sparkles icon in the composer gives Draft from prompt, Rewrite tone… (more concise, formal, friendly, shorter or longer), Continue writing and Suggest subject.
Each of these uses Nautis AI credits. If you run out you'll see "You're out of AI credits" until the period resets or an admin tops up. The draft lands in your composer and you decide whether to send it. For drafts that come from the AI Chief of Staff instead, the rule is the same: a draft always opens a card you can edit first.
Unified email inbox vs your provider's app vs a help desk
Gmail and Outlook are good at email. A help desk is good at tickets. MailBox makes sense when email is one part of running the company and you want it next to contacts, data rooms and tasks.
| Need | Provider's own app | Nautis MailBox | Dedicated help desk |
|---|---|---|---|
| Several accounts in one feed | Varies by provider | Yes, under All accounts | Usually yes, for support addresses |
| Gmail, Outlook and IMAP together | Varies by app | Yes | Varies by product |
| Shared mailbox with assignment | Varies by plan | Manage sharing plus Assign | Yes, with queues and rules |
| AI summary and suggested reply | Varies by plan | Yes, on Nautis AI credits | Varies by product |
| Attachments to a data room | Download and re-upload | Move to Data Rooms | No |
| SLAs, ticket numbers, customer portal | No | No | Yes, the reason to buy one |
Plans and limits
- Each connected mailbox uses one slot from your organization's pool. Launch includes 1 connected email account, Voyage 2 and Fleet 5. Owners and admins can add subscribed slots from Manage slots, billed monthly per slot, up to 25. The dialog shows your current per-slot price.
- If a slot subscription lapses, the extra mailboxes get a 14-day grace window where reading works and sending is blocked, then become read-only. Plan-included mailboxes aren't affected. See pricing for plan details.
What MailBox doesn't do
- Nautis isn't an email host. Your mail lives with Gmail, Outlook or your IMAP provider and Nautis only holds an encrypted access token, so you still need that account.
- Yahoo, iCloud and Zoho only appear when they're enabled for your workspace. Gmail, Outlook and standard IMAP are the ones you can count on.
- It isn't a help desk. There are no ticket numbers, service-level timers or customer portal, so a support team handling hundreds of tickets a day needs a dedicated tool.
- History indexes in the background after you connect. New mail arrives within seconds, but a deep archive keeps filling in after the first few minutes.
- Attachments cap at 25 MB per file. Share bigger files through a data room link instead.
MailBox questions
What is a unified email inbox?+
It's one inbox that shows mail from several accounts, often from different providers, in a single feed. In Nautis you connect Gmail, Outlook or IMAP mailboxes and read them together under All accounts, or switch to one mailbox at a time.
Can I connect Gmail and Outlook to the same inbox?+
Yes. Connect each one through Connect mailbox and sign in on the provider's own screen. Each mailbox uses one slot, and when you have more than one, the composer's From field picks which address sends.
How many email accounts can I connect?+
Launch includes 1, Voyage 2 and Fleet 5, pooled across the organization. Owners and admins can subscribe to extra slots, billed monthly per slot.
Can teammates see my personal mailbox?+
Not unless you share it. You see the mailboxes you connected and any a teammate shared with you through Manage sharing. Admins can manage all mailboxes in the organization.
Does the AI send emails for me?+
No. Suggest reply and Draft from prompt put text in the composer, and you edit and send it. The AI features use Nautis AI credits, not your provider's quota.
Is connecting a mailbox recorded anywhere?+
Yes. Every connect, send, disconnect and delete is recorded in your organization's audit log. Disconnecting also revokes Nautis's access with the provider.
Which email providers can I connect?+
Gmail and Outlook out of the box, plus Other (IMAP) for any standard IMAP/SMTP mailbox. Yahoo, iCloud and Zoho appear when enabled for your workspace. If a provider is missing, ask your admin.
Is my email password stored in Nautis?+
No. You sign in on your provider's own page. Nautis stores only an encrypted access token (AES-256-GCM) and revokes it with the provider when you disconnect.
Can my whole team use one support@ mailbox?+
Yes. Connect it once, then use Manage sharing on the mailbox card to give teammates access. Thread Assign helps divide up who's handling what.
What happens when we run out of mailbox slots?+
The connect flow stops with "Mailbox limit reached". An Owner or Admin can add subscribed slots from Manage slots. Each extra slot is billed monthly and can be cancelled anytime.
Do AI replies use my Gmail/Outlook quota?+
No. AI features run on your Nautis AI credits. If you run out you'll see "You're out of AI credits". Top up under Settings, Billing, AI Credits.
Can I schedule an email to send later?+
Yes. Use the Scheduled send picker in the composer footer. Scheduled messages wait in the Scheduled folder, where you can still cancel them.
I disconnected a mailbox by mistake. Is my email gone?+
No. Your email always lives with your provider; Nautis only holds access. Reconnect the mailbox and everything is back.
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