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Pricing

Priced per workspace. Not per person.

One bill for the team inbox, the sending API, the SMTP relay and the agents. Every plan starts with a 7-day trial and no card.

Plans and limits

Starter

$12/month

Per workspace, not per user

  • AI triage, drafts and follow-ups
  • Delivery and engagement analytics
  • Self-serve billing and invoices
  • Sending API, SMTP relay and webhooks
  • Custom domains with guided DNS
  • Team inbox on your domain
  • Email support
  • Shared addresses and per-person access

$4 per extra seat / month

Start 7-day free trialChoose in your workspace
Most teams pick this

Pro

$39/month

Per workspace, not per user

  • AI triage, drafts and follow-ups
  • Delivery and engagement analytics
  • Self-serve billing and invoices
  • Sending API, SMTP relay and webhooks
  • Custom domains with guided DNS
  • Team inbox on your domain
  • Cross-workspace cold-pitch screening
  • Priority email support
  • Shared addresses and per-person access

$4 per extra seat / month

Start 7-day free trialChoose in your workspace

Scale

Let's talk

Priced per customer

  • AI triage, drafts and follow-ups
  • Delivery and engagement analytics
  • Self-serve billing and invoices
  • Sending API, SMTP relay and webhooks
  • Custom domains with guided DNS
  • Team inbox on your domain
  • Cross-workspace cold-pitch screening
  • Support with an SLA
  • Shared addresses and per-person access
Contact us

Every plan starts with a 7-day free trial. No card required.

Plan limits compared
LimitsStarterProScale
Team members3 included10 includedUnlimited
Domains210Unlimited
Addresses1050Unlimited
Workspace storage10 GB50 GBUnlimited
Inbox sends per day5002,000Unlimited
API & SMTP sends per month10,00050,000Unlimited
AI actions per month3002,000Unlimited

The trial

7 days, no card.

Enough to add a domain, get DNS verified, send real mail and decide. Caps are lower during the trial because email infrastructure attracts people we would rather not host.

Domain
1
Addresses
3
Team members
2
Inbox sends a day
50
API sends a day
200
AI actions a day
25

On day 7 without a plan the workspace becomes read-only: mail still arrives, everything stays readable and exportable, and sending stops. If it is still unpaid 30 days later we delete it, after three warning emails. The full wording is in the Terms of Service.

FAQ

Before you pick.

The enforced limits, per plan, are also documented at docs.koltrix.com/limits.

Is there a free plan?

No. The trial lasts 7 days and needs no card, and after that you pick a plan. We would rather charge a fair price than run a free tier we cannot support.

What counts as a seat?

A person with their own login in your workspace. Shared addresses like support@ are not seats — several people can read one address without paying for it twice.

What happens if I go over a limit?

The API tells you which limit you hit and links to the upgrade page, rather than failing silently. On plans that offer it, API sends above the monthly allowance are billed per thousand instead of being blocked — the overage rate is shown on the plan card.

Can I pay in rupees?

Yes. Switch the currency toggle above; INR prices are billed in INR.

What happens when the trial ends?

Your workspace becomes read-only. Mail keeps arriving, everything stays readable and exportable, and sending pauses until you choose a plan.