Expert tips, strategies, and best practices to help you master email marketing, improve deliverability, and grow your business.
Octeth v6.0.6 brings email verification into the product: check one address, check new subscribers as they sign up, or verify a whole list or segment and act on the results. Held customers get a review page that tells them what is paused and why, journey emails wait out sending limits instead of failing, and the public subscribe command now respects opt-outs.
50 Christmas and holiday email sign-offs to copy, signature examples, out-of-office messages, banner tips, and setup for Gmail, Outlook and Apple Mail.
Octeth v6.0.5 lets an account owner invite team members, each with their own sign-in, two-factor authentication and one of five roles, and records every sign-in and change in an account audit log. AI assistants can now manage lists, subscribers, segments, campaigns, journeys and SMS, campaign editing gets faster, and SMS campaigns get a send speed and quiet hours.
Octeth has a built-in connector for AI assistants. Your clients paste one URL into Claude, ChatGPT or a coding agent, sign in with their normal account, and ask questions about their campaigns in plain language. You decide, per user group, whether assistants may only read, change data or send, and every tool call is logged.
Email list verification is the first service we have opened in the Octeth Client Portal. Upload a list or check a single address, and every address comes back as Safe, Risky, Invalid or Unknown. You pay one credit per unique address, duplicates are free and credits never expire. It also works through a REST API.
Octeth v6.0.4 connects SMS campaigns to the Keitaro tracker, so clicks, conversions and revenue show up in your SMS reports and segments. It also adds test sends to verified numbers with a preview and price, an API reference with a live playground in the new interface, and a batch of session and API security work. Some API answers change, so operators should read the upgrade notes.
Octeth v6.0.2 is out with the fix for PHP2Shell, the critical PHP vulnerability that is being exploited in the wild, so every self-hosted installation should upgrade now. The same release lets your clients connect Claude, ChatGPT and other AI assistants to their account, screens new senders before they hurt your reputation, and moves most of the admin area into a modern staff area.
Two critical PHP vulnerabilities, known as PHP2Shell, were disclosed today. They affect the PHP runtime that every self-hosted Octeth installation runs on, up to and including v6.0.1. We have no evidence that any Octeth installation was attacked. The fix is built and merged, and it ships in Octeth v6.0.2 on October 22. Cloud installations that we manage will be updated by us. Here is what happened, what we changed and what you should do.
Octeth v6.0.1 puts bulk SMS campaigns in the hands of your clients, with a cost estimate they must accept before anything is sent, a replies inbox and SMS activity in segments. It adds Xeebi as an SMS gateway, signed license keys and a free Community Edition, a sender domain health report and real controls over who can send through the email gateway.
Every Black Friday email guide covers subject lines and discounts. Few explain why a campaign gets deferred at 9 a.m. on Black Friday or lands in spam after weeks of planning. This is the sending plan I would follow for 2026: the Gmail, Yahoo, Outlook and Apple rules in force, a volume ramp to November 27, what to do when throttling starts, and what peak volume costs on Klaviyo, Mailchimp and Amazon SES.
Today we replaced the Octeth client area with a new Client Portal at my.octeth.com. Your account, licenses and order history are already there. It adds teams with roles, self-service license domains, support cases inside the portal, bank transfer payments and passkeys. It is also where our new email services for Octeth customers will live.
Octeth v6.0.0 is a security release. We audited every command in the API and fixed everything the audit found, which means most of this release consists of Octeth refusing requests it used to accept. We also found that Octeth had been recording its own address instead of your visitors'. Here is what changed and what it means for you.
Octeth v5.9.6 ships today with a brand new user interface for your clients and a completed admin API. The interface runs alongside the one you already have rather than replacing it, and that was the hardest decision in the release. I want to explain why we did it that way, and what we found when we started installing our own release package on clean servers before shipping it.
Octeth v5.9.5 ships today, our second release on the two-week cadence and our second in a row with no new features. It closes the last vulnerability from the audit that produced the v5.9.4 fixes, and it repairs a report that had been showing an empty result to every customer who used it since the day it shipped. Nobody reported that one, and I think the reason why is worth talking about.
Octeth v5.9.4 ships today with zero new features. It closes two vulnerabilities we found auditing our own code, and fixes a segment rule bug that could quietly sweep suppressed contacts into an audience. It's also the first release on our new two-week cadence — and a small, unglamorous release is exactly what that cadence is supposed to produce.
Octeth v5.9.3 ships today, and it's a hardening release: 258 of its 269 changes are fixes. We spent the cycle auditing our own API surface rather than adding features, and we're publishing the full accounting — because when you host your own platform, you get to see what a maintenance release actually contains. It also brings account usage APIs for agencies who bill on sending volume, spreadsheet-safe CSV exports, and delivery workers that recover on their own.
Octeth v5.9.2 ships today with a new way to work with your platform: a Model Context Protocol server that lets AI assistants like Claude operate your account through safe, permission-scoped tools. It also brings campaign reporting APIs for building your own client dashboards, automated bot and proxy activity detection so your engagement numbers reflect real humans, and much faster email search on large lists.
Octeth v5.9.1 ships today with our deepest analytics and reporting update yet — a full List Analytics suite, Email Gateway reporting and management, journey-level ROI reporting with bulk operations, and a campaign export API. If your agency builds client reports or wants to own your own data, this release gives you a new level of access across the entire platform.
Octeth v5.9.0 ships today with three major additions: built-in A/B campaign testing that lets you measure and automatically send the winning variation, a completely rebuilt Email Gateway interface with cross-domain event visibility, and a new List Freshness Report for proactive list hygiene — plus 27 bug fixes and automatic SSL via Caddy.
Octeth v5.8.3 ships 81 commits over 15 days: automatic recovery for stuck journey entries, a new ScheduledPull trigger, the Log Observer and System Health dashboard, revenue attribution with duplicate conversion prevention, and 55 bug fixes that address real operational pain points.
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