Real email on every domain you own
Plainmail gives you real mailboxes on all of your domains for $5 a month, flat. If you have ever bought a domain for a side project and left it without an email address, this is the problem it solves: tell it to set up hello@yourdomain, and you get a genuine IMAP/SMTP mailbox you can read in the mail app you already use, with no per-domain or per-mailbox fees.
There is no new app to learn and no forwarding trick. Mail arrives at hello@yourdomain and replies go out from hello@yourdomain, signed for your domain.
What it does
- One flat price for up to 50 domains and 100 mailboxes. A single $5 a month plan covers every domain and mailbox, with 25 GB of storage. No per-domain or per-mailbox fees.
- DNS written for you. Plainmail writes the mail records (MX, SPF, DKIM, DMARC) at Cloudflare, Vercel, or Porkbun. Anywhere else, it gives you the exact records to copy and checks them for you.
- Standard IMAP/SMTP mailboxes. Add the mailbox to Apple Mail, the Gmail app, Outlook, or Thunderbird next to your other accounts. No forwarding, and no new app to learn.
- Set it up from your AI agent. Ask Claude through the Plainmail MCP server to set up an address, or use the CLI or REST API. Your agent can add a domain, check its DNS, create mailboxes and aliases, and read, send, and reply to mail. The dashboard works too, in a few clicks.
- Sending through Amazon SES. Outgoing mail goes through Amazon SES with SPF, DKIM, and DMARC passing. Bounces and complaints are tracked automatically, and your dashboard shows delivery, bounce, and complaint rates.
- Built for mail between people. Outgoing mail is limited to 200 messages per mailbox per day, and accounts with high bounce or complaint rates are paused and reviewed, which keeps the shared sending reputation clean.
- Easy to leave. Your domains and DNS stay with your provider, mailboxes are standard IMAP so any mail app or migration tool can copy your mail out, and you can point your MX records elsewhere and cancel.
Who it is for
Plainmail is aimed at founders and indie makers who run several projects, each on its own domain, and want a proper hello@ or support@ address on every one without paying per user per domain. It also suits developers who want their AI agent to handle mailbox setup through MCP, the CLI, or the API. Sign-up is with GitHub.
How it differs from FounderMail
Readers may know FounderMail, a similar idea already listed on this site. The two solve the same core problem but differ in meaningful ways. FounderMail costs $20 a month, works only with domains on Cloudflare, and centers on shared team and agent inboxes with its own webmail and a 14-day free trial. Plainmail costs $5 a month, works with any DNS provider (writing records automatically at Cloudflare, Vercel, or Porkbun), gives you standard IMAP mailboxes for the mail app you already use, and has no free tier. If you want team inboxes and agent access controls, FounderMail is the closer fit. If you want the cheapest flat-price mailbox on every domain, in your own mail app, Plainmail is the one.
Pricing
Plainmail has one plan: $5 a month, flat, for up to 50 domains, 100 mailboxes, and 25 GB of storage. There is no free tier or trial. The official site states plainly that requiring payment keeps spammers out, which keeps everyone’s mail out of the junk folder. Prices may change, so check the official site for the latest details: plainmail.dev.
Keep in mind
Plainmail is for personal and transactional mail between people, not bulk mail. Newsletters, marketing email, cold outreach, and purchased or scraped lists are not allowed. There is no webmail of its own, so you read mail in Apple Mail, the Gmail app, Outlook, Thunderbird, or another IMAP app. Mail is stored on the company’s servers in the United States (Hetzner, Ashburn, Virginia) and in Cloudflare R2 storage, with encrypted backups in Amazon S3. The product launched on Product Hunt on November 5, 2026, so it is very new.
Image: Plainmail, official Open Graph visual from plainmail.dev. Visit the official site: plainmail.dev
