How is this different from Gmail aliases?

Gmail aliases are bolted onto a single-account inbox. Folio is built around multiple domains: each domain has its own color stripe, DKIM setup, and automatic reply From behavior.

How much does it cost?

Solo is $3.50 per month or $2.99 per month billed annually. Studio is $15 per month or $12 per month billed annually. Holding Co. is $39 per month or $29 per month billed annually for operators who want onboarding and priority support. Plans scale by domains and monthly send volume — Solo includes 3 domains and 1,000 sends a month, Studio 10 domains and 6,000, Holding Co. unlimited domains and 30,000. Preview starts with one domain and 100 sends, no card.

Can I bring domains I already own?

Yes. Add any domain you control, paste the DNS records shown by the setup wizard, and Folio watches for them to resolve. Most domains are verified and sending mail inside ten minutes.

Is my email actually going to be delivered?

Deliverability is the reason the product is built around per-domain DKIM, SPF, DMARC, Amazon SES outbound sending, and bounce handling. The deliverability section above explains the exact setup.

Does it handle calendar invites?

Yes — an inbox-side agenda. Invites land as readable cards with RSVP buttons (accept, decline, propose new time), recurring events expand from RRULE, conflicts flag before you accept, and your agenda is exposed as a subscribable iCal feed any calendar app can read. There is no in-product editor for organising your own meetings yet; you keep that workflow in your existing calendar.

Is my outbound mail DKIM-signed per domain?

Yes. Each domain gets its own RSA-2048 DKIM key, with the private half Fernet-encrypted at rest. The signature recipients verify belongs to the domain you are sending from, not a shared signer.

Folio is built by Yoni Ryabinski, the founder behind several small public products. He built it after living with the same portfolio-operator problem: too many domains, too many addresses, and too much risk of replying from the wrong identity.

What happens if I cancel?

You stop being charged. Email you have already received remains yours, and magic-link sign-in keeps working through the end of the paid period. Nothing is held hostage.

Do I need a card to start?

No. The first 100 sends and the first domain are free, no card required — long enough to actually live with the product. After that, every plan has a 14-day card-required trial that doesn't charge until the trial ends.

For founders running more than one business

The inbox for founders running more than one business.

Folio is one inbox for every business you run. Gmail was built for one person at one company — Folio is for the other thing: three brands, five domains, one head to keep them straight. Replies auto-pick the right From address, every time.

Start free — no card

First 100 sends free · one domain · no card

60-second demo

In production since April 2026Sending via Amazon SES daily Built in the open read the changelog →

Per-domain DKIM · Amazon SES · Passwordless sign-in · No password to leak

Android app live on Google Play · iPhone app coming next

For the 29.8 million US solopreneurs · the multi-LLC operator · the portfolio founder

Product preview

Folio correspondence inbox showing email from several domains, each with a colored identity stripe.

Every brand you own, color-coded in one inbox · reply auto-picks the matching From.

Spam review screen showing held messages, domain filters, and a detailed spam review pane. — Spam review

Security settings screen showing passkey management and recovery copy. — Passkey sign-in

Mobile desk

The same inbox, in your pocket.

The Android app is now available on Google Play. It is the same multi-domain inbox, reply-from behavior, and passkey-first sign-in, packaged for the phone operators already use between meetings and after hours.

Android

Live on Google Play

Open Play Store

iPhone

Coming next

Same account, same identities, same web inbox until the App Store build ships.

9:41EM

Android release

One account. Every domain.

support@studio.comReply from studio
billing@partners.coInvoice ready
press@newsletter.ioNew inquiry

The problem

You have four Chrome profiles for four email addresses.

One inbox per business. One tab set per life. Every email client was built assuming you have one job. You don't.

Portfolio entrepreneurs, solo founders, consultants, and holding-company operators all hit the same problem: the business structure gets more complex, but the inbox stays stuck on one identity.

How it works

One setup, every domain.

1
Add your domains. The wizard shows each DNS record as a copy-paste card for your registrar — GoDaddy, Namecheap, Squarespace, Cloudflare — then watches for them to resolve. Most domains are sending in under ten minutes; if you get stuck, we'll walk you through it.
2
Email arrives tagged. Every message wears a colored stripe matching the domain it was sent to — visible in the list, the message view, and the reply banner.

3 · The moment that earns the trial

Reply to a message sent to you@studio.com — the From is already correct. Override if you need to. Most days you won't.

Inbox demo

Four businesses, one morning.

Today·Inbox4 emails

8:12 AM
Shopify Support
support@shopify.com
via studio
Customer reply on order #1842
The customer confirmed the replacement size and asked whether the shipping label can be sent today.
7:58 AM
AWS Billing
no-reply-aws@amazon.com
via partners
Your May invoice is ready
Your monthly invoice for the analytics project is available. Payment method ending in 2044 will be charged.
yesterday
Dorsey Legal
contracts@dorsey.example
via newsletter
Redlines to the vendor agreement
Attached is the revised agreement with comments on indemnity, payment timing, and data processing language.
Apr 19
ConvertKit
notifications@convertkit.com
via dispatch
23 new subscribers this week
Your launch sequence is converting at 8.4%. Three new replies are waiting in the newsletter inbox.

Comparison

Why not just use Gmail aliases?

Aliases help you send from another address. They do not give each business a clean setup, a visible identity, and reply behavior that stays correct by default.

Everyone else

Gmailaliases buried in settings
Google Workspacebilled per user, × every domain
Fastmailseparate inbox per identity
ProtonMailaliases are a footnote
Superhumana faster keyboard, still one account

Folio

·Built around multiple identities, not bolted on
·Per-domain color stripe, everywhere
·Reply From auto-selected to the received address
·Plans that scale from 3 domains to unlimited
·Custom domains in under ten minutes
·Magic-link sign-in; no passwords

See the head-to-head comparisons · vs. Gmail aliases · vs. Workspace · vs. Fastmail

Deliverability

Built for deliverability.

Email deliverability is the #1 reason people don't switch providers. Here's exactly how Folio handles it.

Per-domain DKIM: Your emails land in inboxes, not spam folders. RSA-2048 DKIM keys are generated when you add each domain. Private keys are Fernet-encrypted at rest.
SPF · DMARC: Receivers can verify your domain is allowed to send. The DNS wizard gives you SPF and DMARC records, including a p=quarantine DMARC policy.
Amazon SES outbound: Outbound email uses production-grade infrastructure. Sending runs through Amazon SES with threading headers set so Gmail and Outlook fold replies into the original conversation.
Bounces caught at the edge: Bad addresses stop hurting your sender reputation. SES feedback notifications mark dead addresses before a second email goes out.
Passwordless auth: There is no password database to leak. Sign in with a one-time magic link — fifteen-minute, single-use, bound to the address it was issued to — then upgrade to a passkey in one tap. Sessions use httpOnly refresh-token cookies.
30-day recovery: Deleted email is recoverable long enough to fix mistakes. Email moved to trash stays recoverable for 30 days before removal.

Dept. V · The shipping log

Built in the open, week by week.

No invented testimonials. The honest signal a small product can offer is that it ships, dated and on the record. Every entry below links to the full release note.

In production since: April 2026; Sending mail through Amazon SES every day since.
Shipped this issue: 009; Releases dated through 5 June 2026 · read the full log →

5 June 2026No. 009
Prove deliverability before you switch — and a roomier free preview.
4 June 2026No. 008
Emcognito WebMail is now Folio — at folioinbox.com.
31 May 2026No. 007
AgentDraft now reads like a first-party calendar connection.

All releases →

Founder

Built by Yoni Ryabinski.

Yoni Ryabinski · founder

Folio exists because one person running several public products quickly ends up with several domains, sender reputations, and support addresses to manage.

Yoni built it for that portfolio-operator problem: one inbox for the work, with each business still keeping its own From address, DKIM signature, and context when it is time to reply.

Built from use: Portfolio email was the problem before it became the product.
Public trail: Several open products, not invented customer-logo theatre.
Direct line: The founder profile is public before you trust the product.

View founder profile →

Other public products by the founder

No customer logos invented here, just working products you can open.

VSVectraSEOSEO autopilot and site monitoring EMEmcognitoAnonymous disposable email service ECEmail CollectorEmail capture and newsletter tooling ETEchoThreadPrivacy-first comment platform SFSiftfySpam and moderation classifier AKAlaska Road TripCustom Alaska itinerary product ISIceland Photo MapDownloadable Iceland photography map

Pricing

Serious email infrastructure, simple pricing.

Try it free first — 100 sends and one domain, no card. Add a card to lift the cap whenever you're ready; the 14-day trial doesn't charge until it ends, and cancel anytime from the Stripe billing portal.

One operator, two or three side projects.

Solo

$2.99/mobilled yearly

Billed $35.88 once a year. Save $6.12/yr.

Up to 3 domains
1,000 sends / month
All core inbox features

Recommended

A growing portfolio — up to ten domains.

Studio

$12/mobilled yearly

Billed $144 once a year. Save $36.00/yr.

Up to 10 domains
6,000 sends / month
All core inbox features

Unlimited domains, or you want a hand getting set up.

Holding Co.

$29/mobilled yearly

Billed $348 once a year. Save $120.00/yr.

Unlimited domains
30,000 sends / month
Onboarding call

Not sure? Start on Solo. Upgrading later takes one click and we prorate the difference.

Core features on every plan

·Per-domain DKIM. Outbound email is signed with the domain it comes from.
·Automatic reply From. Replies use the address the original message was sent to.
·Passwordless sign-in. A one-time magic link to start, then a passkey — no password to remember or leak.
·30-day trash recovery. Deleted email stays recoverable for a month.

Start free — no card See pricing details

A note on scope

Folio isn't built for regulated email — yet.

No archiving, e-discovery, or compliance supervision. If you're a regulated professional who has to retain and supervise correspondence, Folio isn't your system of record yet — we'd rather say so than waste your trial.

FAQ

Questions before you switch.

01How is this different from Gmail aliases?: Gmail aliases are bolted onto a single-account inbox. Folio is built around multiple domains: each domain has its own color stripe, DKIM setup, and automatic reply From behavior.
02How much does it cost?: Solo is $3.50 per month or $2.99 per month billed annually. Studio is $15 per month or $12 per month billed annually. Holding Co. is $39 per month or $29 per month billed annually for operators who want onboarding and priority support. Plans scale by domains and monthly send volume — Solo includes 3 domains and 1,000 sends a month, Studio 10 domains and 6,000, Holding Co. unlimited domains and 30,000. Preview starts with one domain and 100 sends, no card.
03Can I bring domains I already own?: Yes. Add any domain you control, paste the DNS records shown by the setup wizard, and Folio watches for them to resolve. Most domains are verified and sending mail inside ten minutes.
04Is my email actually going to be delivered?: Deliverability is the reason the product is built around per-domain DKIM, SPF, DMARC, Amazon SES outbound sending, and bounce handling. The deliverability section above explains the exact setup.
05Does it handle calendar invites?: Yes — an inbox-side agenda. Invites land as readable cards with RSVP buttons (accept, decline, propose new time), recurring events expand from RRULE, conflicts flag before you accept, and your agenda is exposed as a subscribable iCal feed any calendar app can read. There is no in-product editor for organising your own meetings yet; you keep that workflow in your existing calendar.
06Is my outbound mail DKIM-signed per domain?: Yes. Each domain gets its own RSA-2048 DKIM key, with the private half Fernet-encrypted at rest. The signature recipients verify belongs to the domain you are sending from, not a shared signer.
07Who is behind this?: Folio is built by Yoni Ryabinski, the founder behind several small public products. He built it after living with the same portfolio-operator problem: too many domains, too many addresses, and too much risk of replying from the wrong identity.
08What happens if I cancel?: You stop being charged. Email you have already received remains yours, and magic-link sign-in keeps working through the end of the paid period. Nothing is held hostage.
09Do I need a card to start?: No. The first 100 sends and the first domain are free, no card required — long enough to actually live with the product. After that, every plan has a 14-day card-required trial that doesn't charge until the trial ends.

More at the full FAQ · the docs

Ready to consolidate your inboxes?

Send your first letter free.

Sign in with email, add a domain, and see how much calmer one inbox feels when every business keeps its own identity. First 100 sends are on us, no card.