Every page on koltrix.com.

What Koltrix does: a shared team inbox on your own domain with AI triage and drafts, a transactional email API and SMTP relay, and DNS checked for you.

Koltrix pricing: one price per workspace with seats included, not per user. Team inbox, email API, SMTP relay and AI on every plan. 7-day free trial.

Free email tools: check SPF, DKIM and DMARC records, look up MX records and analyze raw email headers. No signup, nothing stored, results in seconds.

Per-domain DKIM keys, SPF and DMARC records generated for you and checked live, plus bounce and complaint suppression, so your email reaches inboxes.

Shared addresses on your own domain, keyboard-first, sub-100 ms search, and AI triage that files cold pitches and drafts replies before you look.

Send product email with one JSON POST or the SMTP relay, get signed delivery webhooks, and have customer replies land in your team inbox.

Check any domain's SPF, DKIM and DMARC records and see why email lands in spam, with the fix for each problem. Free, no signup, results in seconds.

Paste raw email headers to see the delivery path, SPF, DKIM and DMARC results and where a message was delayed. Runs in your browser; nothing uploaded.

Look up any domain's MX records and see which servers receive its email, in priority order, with problems flagged. Free, no signup.

Connect Claude, ChatGPT or Cursor to your Koltrix inbox over MCP: search, organise and draft by chat. Sending is off until an admin allows it.

Create a custom connector in ChatGPT, choose OAuth and approve it in Koltrix. Search and read mail, and leave drafts for review. Sending is off by default.

Add Koltrix to Claude as a custom connector: paste one URL, sign in, approve. Search, label and draft by chat. Sending is off until an admin allows it.

Add Koltrix to Claude Code with one command, then run /mcp to sign in. Search, label and draft from the terminal. Sending is off by default.

Add one entry to Cursor's mcp.json, sign in when asked, and look up customer email from your editor. Read, organise and draft; sending is off by default.

What each MCP permission allows, how safe sending works, the 10-recipient and daily limits, and why email text is untrusted. Sending is off by default.

All 16 Koltrix MCP tools, grouped as Read, Organise, Draft and Send, with the permission each needs, its inputs, an example prompt and a sample result.

Honest comparisons of Koltrix with Google Workspace, Zoho Mail, Resend, Postmark and Mailchimp, including where each of them is the better choice.

A Google Workspace alternative for SaaS startups: team inbox, sending API and AI agents on one bill. An honest comparison, including where Workspace wins.

Mailchimp is for marketing campaigns; Koltrix is a team inbox and transactional email API. What each does, and which one a SaaS team needs first.

Postmark is a specialist transactional sender. Koltrix pairs a sending API with a team inbox for the replies. Where each one is the better choice.

Resend sends your product's email. Koltrix sends it and puts the replies in a team inbox with AI triage. An honest comparison, including where Resend wins.

Koltrix vs Zoho Mail for a small SaaS team: custom-domain inbox, product email API and AI triage on one bill. Where each is the better choice.

Guides and articles on deliverability, email APIs, team inboxes and AI email.

What changed in Koltrix, newest first: AI agents and triage, faster search, billing, trials and limits, and a simpler app. Dated release notes.

How Koltrix reports incidents to affected workspaces, what we monitor, and where the public status dashboard will live once it is published.

How to reach Koltrix: support, abuse reports, privacy requests and legal questions. Real mailboxes, answered by people, with response times listed.

How ReminderIt runs its transactional email, its support address and the replies to both on Koltrix, written by the founder of both products.

How Koltrix isolates each workspace, protects mail in transit, handles AI providers and takes vulnerability reports, and what we do not have yet.

A readable map of koltrix.com: every product page, comparison, guide, free tool and blog post, grouped by topic, a few clicks from the home page.

What you may and may not send through Koltrix: no purchased lists, no cold bulk email, no spam, and what happens to accounts that try it.

koltrix.com sets no advertising cookies and loads no third-party trackers. What the site does store in your browser, and what the product app stores.

Koltrix's Data Processing Addendum: roles, security measures, subprocessors, transfers, retention, breach notice and audit. Downloadable as text.

What Koltrix collects, why, who we share it with, how long we keep it, and your rights under India's DPDP Act 2023 and the GDPR.

How cancelling a Koltrix plan works and when fees are refundable: cancel any time; paid fees are refunded only where this policy or the law says so.

Every third party that processes Koltrix customer data, what each one does and exactly what reaches it, including both AI providers.

The agreement between you and Koltrix: the service, trials, renewal, payment, refunds, acceptable use, liability, termination and disputes.