MailNail

Invite only · 2026

All your email - one inbox
your agents can use

Connect Gmail, Outlook, iCloud or any IMAP account and reply from any of them. Add a domain you own and get proper email on it, in the same place.

No spam. One email when your invite is ready.

Gmail, Outlook, iCloud, any IMAPReal email on domains you ownSearch across every account
Inbox · 3 accountsShowcase
Jamie Chen9:41
Re: Partnership proposal

This looks great on our end. Let's lock in the terms next week. I'll send over an invite for Tuesday.

Ledgerline8:02
Invoice 2261 is ready
Kit BrandYest
Shipped the fix you flagged
hosted on your own domain
ReplyArchiveSearch⌘K

What it does

One inbox for every account

Gmail, Outlook, iCloud and any IMAP account in a single view. Read, search and reply in one place instead of five.

Real email on your own domain

Send and receive from you@yourdomain.com. Point the domain at MailNail and everything that keeps your mail out of spam folders is set up for you.

Send as any of your addresses

Replies go out from the address the mail came in on, so you never answer a client from your personal account by accident. Switch address per message when you want to.

Features

MailNail reads your mail. That is the only way the search, the sorting and the agents work at all. What it learns is yours: no ads, no profiling, nobody else's model trained on your inbox.

One search, every account

Look for a thread the way you actually remember it. Half a subject line, the wrong month, a name you're not sure about, and it still comes up.

Your whole history comes with you

Connect an account and its past arrives too, as far back as you want. You can search a thread from two years ago on the day you sign up.

Let an agent work your inbox

Claude and your own tools plug straight in. You pick what they're allowed to touch, one mailbox at a time, and you can read back every move they made.

Conversations stay whole

Half the thread landed on Gmail, half on your own domain. You still read it as one conversation.

Archive here, archived everywhere

Read it, file it or bin it in MailNail and Gmail agrees. So does the mail app on your phone. Nothing to tidy up twice.

Give your team the mailboxes they need

Invite your teammates and hand them support@, billing@ or hello@. Everyone works the same inbox, sees the same replies, and answers as the address instead of as themselves.

Built for

Anyone who owns more than one address or domain. Most clients treat a single inbox as the default; MailNail assumes you have several.

  • Indie hackers

    5–30 domains for side projects.

    One client. Every project email in one view. No extra accounts.

  • Freelancers

    A separate address per client.

    project@clientdomain.com, billing@yourstudio.com, all in one inbox.

  • Agencies

    Client domains, neatly separated.

    Manage email for a dozen clients without a dozen logins.

  • Founders

    Product, marketing, personal.

    hello@product.com, press@product.com and personal@gmail in one place.

Request access

MailNail is invite only while we grow it. Leave your address and we'll email you when yours is ready. One email, nothing before it. No newsletter, no drip campaign.

Invites go out in batches, in the order requests come in.