Koltrix
Guides
Running Email for Two Products From One Small Team
Two products, one small team: separate domains and reputations, shared access, distinct senders and support routing, without doubling your email work.
4 min read
Team inboxRunning sales and support from one inbox without collisions
When hello@ gets both prospects and customers, sales and support collide. Rules for spotting intent, splitting ownership and handing off new customers.
5 min read
GuidesSending DMARC reports to another domain: the auth record
If your rua address lives on a different domain, receivers check an authorization record first. How the _report._dmarc record works and how to test it.
4 min read
ProductMeasuring Lifecycle Emails With Koltrix Delivery Events
How to use Koltrix webhooks and message events to measure onboarding, trial and dunning emails by what users do next, not by open rates you can't trust.
5 min read
AI & emailClassifying inbound mail by intent: a starter taxonomy
A ready-to-use set of intent categories for a SaaS inbox, with definitions, example emails and routing for each, plus rules for keeping the list short.
4 min read
DeliverabilityOutlook.com's requirements for high-volume senders
Microsoft now expects SPF, DKIM and DMARC from domains sending over 5,000 messages a day to Outlook.com, Hotmail and Live. What to check and fix.
4 min read
StartupsReferral Program Emails: Asking at the Right Moment
Ask for referrals right after a customer succeeds, not at signup. The three emails a referral program needs, when to send each, and what to avoid.
4 min read
AI & emailWho owns an AI-drafted reply in a shared inbox?
Answers to the accountability questions teams hit with AI drafts: who owns a reply, how to treat drafts, editing conflicts and whether to note AI use.
5 min read
ProductWhat happens after POST /api/v2/emails returns 202
Follow a Koltrix send from the 202 Accepted response through the queue, DKIM signing, SMTP delivery and the webhook events your app receives.
6 min read
ComparisonsStay on Google Workspace If This Describes Your Team
Koltrix is not the right email tool for every team. If you need Docs, Calendar, desktop mail clients or a SOC 2 report, stay on Google Workspace. Here is why.
4 min read
Team inboxCutting notification noise out of the team inbox
A checklist for clearing tool alerts, receipts, newsletters and calendar mail out of a shared inbox so messages from real people are what your team sees first.
5 min read
DeliverabilityGoogle Postmaster Tools: the dashboards that matter
Postmaster Tools is the only first-party view into how Gmail sees your domain. Set it up, read the spam rate and compliance views, and know its blind spots.
4 min read