Pricing · free during beta

Unlimited access.

Sign up today for every Mailtwine feature with no plan limits during beta. Secure your early-bird pricing today.

Unlimited for FREE Beta access
$0 during beta

Every feature. No plan limits.

  • All features included: triage, prioritization, summaries, contextual drafts, routing, rules, integrations, and approvals.
  • No plan limits during beta: use Mailtwine on your real inbox without limits.
  • Early-bird pricing: beta users get an exclusive offer when paid plans launch.
Sign up free
Your beta status stays with your account. We’ll use it to make beta-user early-bird pricing available before paid plans begin.
Pencil portrait of Nitai, founder of Mailtwine
Why I built Mailtwine

I got tired of waiting for the inbox to grow up.

Hey, I’m Nitai. I built Helpmonks and have spent years helping teams manage customer, support, sales, and founder email.

Every big inbox shipped another filter, another tab, another AI button. The bargain never changed. You were still expected to read, sort, remember, and reply to everything.

I did not build Mailtwine to give you another inbox to babysit. I built it to do the work the old inboxes still hand back to you.

Keep the accounts you already use. Mailtwine works behind them, handles the routine work, and brings you only the decisions that still need you.

NitaiFounder of Mailtwine and Helpmonks

Works with your existing email

Keep your mailbox. Get help with the work.

Mailtwine is the underdog working behind the accounts you already use. No new address. No migration. No swapping one inbox for another. It sorts, drafts, routes, and follows up in the background, then asks for attention only when a decision still needs you.

Connect Google Workspace through tenant-owned Google OAuth or keyless service-account domain-wide delegation, Outlook.com and Microsoft 365 through Microsoft OAuth, Fastmail through JMAP, Helpmonks through its native API, or any standard IMAP mailbox with SMTP for sending. MCP-compatible clients connect over OAuth for mail search, summaries, draft suggestions, routing, and approval review.

Google OAuth Keyless service accounts Microsoft OAuth Fastmail JMAP Helpmonks IMAP + SMTP MCP clients

AI assistant for Gmail & Workspace → AI assistant for Outlook →

Open source

Open source at v1.

Mailtwine is not another locked product layer. It is hosted during beta; when we hit v1, the code goes public (AGPL) and you can run it yourself, close to your own stack. No upgrade maze — pricing is never about withholding the useful parts.

01

Hosted now

No setup, no servers.

02

Self-host at v1

Control over data location, deployment, and internal rules.

03

No upgrade maze

The useful parts stay included.

FAQ

Pricing questions, straight answers

What counts as a workflow? +
One automated pass over a thread — a triage run, a digest, a draft, or a rule execution.
Does it send without approval? +
Not by default. Mailtwine drafts and routes for review. An admin can approve an exact rule version for limited auto-send; changing that rule revokes its approval.
Does it replace my inbox? +
No. Keep the email accounts and inboxes you already use. Mailtwine changes how much work reaches you while native sync keeps the real mailbox in step.
Which email providers does it integrate with? +
Mailtwine connects Google Workspace through tenant-owned Google OAuth or keyless service-account domain-wide delegation; Outlook.com and Microsoft 365 through Microsoft OAuth; Fastmail through JMAP; Helpmonks through its native API; and standard IMAP mailboxes with SMTP for sending. Native connections keep supported mailbox actions synchronized. Any mailbox can also auto-forward into Mailtwine.
What do I get during beta? +
Unlimited access: every Mailtwine feature, with no plan limits during beta.
Will I be charged during beta? +
No. Beta access is 100% discounted, so the price is $0 while Mailtwine is in beta.
What early-bird pricing do I lock in? +
Signing up marks your account as a beta user and secures eligibility for an exclusive early-bird offer. We’ll share the exact pricing before paid plans begin.
FREE DURING BETA UNLIMITED ACCESS Ready when you are

Every feature. No plan limits. $0.

Get unlimited access free during beta and secure beta-user early-bird pricing for launch.

Sign up free