AI email assistant for founders who need their mornings back
InboxManager is an AI email assistant for founders running a company of five to fifty people. It works inside the Gmail or Outlook you already use, sorts every new message into five lanes, sums up long threads in three lines and writes reply drafts in your voice. You read, adjust and send. Nothing leaves your mailbox without your approval.
What a founder's inbox looks like by 9 a.m.
A typical founder opens the laptop to two or three hundred new messages. A customer asks why an invoice doubled. An investor wants the monthly update moved to Thursday. A candidate replies to an offer with a question about equity. A vendor sends a renewal quote with a deadline buried in paragraph four. Around them sit forty newsletters, a dozen cold pitches for lead generation services and a stream of tool notifications. Every one of them looks equally urgent in a flat list.
The pains that cost the most
- 01 Investor and customer messages get buried under newsletters and pitches, and you find them two days late.
- 02 Long threads with a co-founder, a lawyer and a buyer need ten minutes of re-reading before you can answer one line.
- 03 You write the same kind of reply again and again, from intro requests to scheduling to polite declines.
- 04 Follow-ups slip because nobody tracks who owes whom an answer, and a warm lead goes cold.
- 05 Email eats the focused hours you need for product, hiring and fundraising.
How InboxManager handles a founder's mail, step by step
Picture a Tuesday. You connect your Gmail once through the official Google API with OAuth, and the work starts on the next message that arrives.
- 07:40. A long thread with your lead investor about the bridge round arrives with eleven replies. InboxManager files it under Important and adds a three-line summary at the top of your briefing: the decision taken, the open ask for updated runway numbers, and the Friday deadline.
- 07:42. A customer email about a billing error lands in Needs reply. A draft is already waiting in your Drafts folder, written in the short, direct tone you use in your sent mail, with the refund question left for you to confirm.
- 07:45. Thirty newsletters move to the Newsletters lane and nine cold pitches move to Spam and cold pitches. They stay in your mailbox, out of your way.
- 08:00. Your daily briefing email arrives at the time you chose. It lists what needs you today, what is waiting on others, and which threads changed overnight.
- 10:15. You sent a partnership proposal last Thursday and got no answer. InboxManager has tracked it in Waiting and suggests a short follow-up draft. You change one sentence and send it from Gmail.
The features founders use every day
- AI email organizer with five lanes sorts every new message into Important, Needs reply, Waiting, Newsletters, and Spam and cold pitches, using labels in Gmail and folders in Outlook. You never learn a new email app.
- AI email response generator learns your voice from the mail you have already sent and saves drafts to your Drafts folder. There is no auto-send setting, so every message goes out only when you press send.
- AI email summarizer for long threads turns a thirty-message thread into three lines with decisions, asks and deadlines, so you can answer a board member between two meetings.
- Email follow up reminder watches threads where you are waiting on a reply, nudges you after the number of days you choose and prepares a polite follow-up.
- Daily email briefing for email task management gives you one email at the hour you choose with everything that needs you today.
Rules in plain English
You can also write rules the way you would brief a person. "Anything from investors goes to Important and gets a summary." "Invoices from vendors go to Finance and remind me Friday." "Intro requests from people I have never emailed go to Needs reply with a polite decline draft." InboxManager applies them to every new message.
When you hire an assistant or a chief of staff
Many founders add an assistant once the company passes twenty people. With email delegation to an executive assistant, the assistant triages and drafts in your mailbox with the permissions you set, and you approve from your phone. You keep the final word on every message that carries your name.
Which plan usually fits a founder
Most solo founders and founder plus assistant setups start on Starter. It covers one owner and one assistant, two connected mailboxes (for example your company Gmail and a personal Outlook you still use for older contacts), 6,000 emails triaged, 600 AI reply drafts and 400 thread summaries per month, plus one daily briefing per user per day. Paying yearly, a founder spends 288 USD for the whole year, the same as 24 USD a month; paying monthly costs 49 USD.
When co-founders and early hires want the same help, Plus covers up to five people, ten mailboxes, 20,000 emails triaged, 2,000 drafts and 900 summaries per month, and adds two shared inboxes for addresses like info@ and sales@. Plus costs 74 USD per month billed yearly or 149 USD month to month.
Limits count what you use in each billing period and are shown in the app. Deleting an email or a draft does not give the allowance back, and there is no unlimited plan. If you need more, you move to a higher plan. See every limit on the InboxManager pricing page.
Your investor and customer mail stays private
InboxManager asks only for the OAuth scopes it needs to read, label and draft. Mail is encrypted in transit and at rest, is never used to train AI models and is deleted when you disconnect or ask us to delete it. Read the details on our email data privacy page, or see how founders manage email with an assistant and a daily routine.
Founder questions about the AI email assistant
Will InboxManager send emails to investors or customers on its own?
No. InboxManager writes drafts and saves them to your Drafts folder. There is no auto-send setting anywhere in the product, so a message goes out only when you or your assistant press send.
Do I have to switch from Gmail or Outlook?
No. InboxManager works inside your existing mailbox through labels in Gmail and folders in Outlook. Your phone app, your desktop app and your shortcuts stay the same. Read more on the Gmail AI assistant and Outlook AI assistant pages.
How does it learn to write like me?
It reads the tone and structure of messages you have already sent: how long your replies are, how you greet people and how you sign off. You can also pick a tone such as Concise, Warm, Formal or Firm for a given rule.
Can early stage founders try it before paying?
Yes, once. The home page has a one-time demo where you paste an email and see how it is sorted and answered. Paid plans start at 24 USD per month billed yearly, and there is no unpaid plan.