Changelog

Workspace switcher in the top bar, a simpler Add workspace page, and a faster dashboard.

• The workspace switcher now lives in the top bar and is always there, even with a single workspace, with Add workspace one click away
• Add workspace has its own page with three short steps, and renaming a workspace is a small Rename link instead of an always-open text box
• Faster pages: pages, scripts and the stylesheet are now compressed and cached by your browser, so the app opens quicker, most noticeably on a slow connection or a server far away
• The domain health card no longer slows the dashboard down: its checks run in parallel and are kept ready in the background, and it shows only the current workspace's domains
• The license check now also tells us which build you run (Linux, Windows or Docker, and the CPU type) so we know which downloads matter; nothing about your computer or network is sent
• Upgrading from 8.0.0 needs nothing special -- docker compose pull and up -d, or replace the binary

Workspaces: run every client from one install, one login and one URL, with each client's contacts, campaigns, mailboxes and plan kept completely separate.

• Workspaces: a workspace keeps one client's contacts, lists, campaigns, mailboxes, templates, webhooks, API keys, inbox and dashboard apart from every other workspace. Switch between them from the menu on the left; an address that hard-bounced is blocked everywhere, while unsubscribes and complaints stay inside their workspace
• One license per workspace: each workspace has its own plan, billing cycle and token, bought on your subsimail.com account. Two workspaces are free; the second paid workspace is 20% off and every one after that 10% off. Add one in the app by pasting its token
• Roles per workspace: the same person can be an admin in one workspace and view-only in another. People only see, and can only switch to, the workspaces they are given; admins can only give access to workspaces they run themselves
• People who leave: pause (blocks sign-in until you enable it), archive (hidden, email free to reuse, optional hand-over of what they created) or remove from one workspace; super admins and admins can also change someone's sign-in email
• Several Google and Microsoft apps per workspace: connect Gmail or Outlook accounts from different organisations, each through its own app. For Gmail we now strongly recommend SMTP/IMAP with an app password (no 7-day reconnecting)
• Tracking on its own port: open, click and unsubscribe links are served by a tracking-only port (3001 by default), so your login can stay behind a VPN while tracking stays public. Give each client its own tracking domain and use "Check my tracking domain" on your subsimail.com account to confirm it works
• One license, one install: a license now runs on one SubsiMail install at a time (restoring a database backup keeps working; "Release this install" and a 24-hour silence handle moves)
• Upgrading from 7.x needs nothing special -- docker compose pull and up -d, or replace the binary. Everything you have becomes the Default workspace, and your license, users and opt-outs move across automatically

A unified inbox for every reply, mailbox rotation, email verification, AI drafts with your own key, call tasks and domain-health checks.

• New Inbox: every email exchange with someone in your contacts, across all your connected mailboxes (IMAP, Gmail and Outlook), in one place — with unread counts, labels, search inside emails, a formatted-email view, and a rich-text reply that stays in the same thread
• Instant on-screen alerts: a small notification appears on any page the moment a new email arrives, and clicking it opens that conversation; mailboxes are now checked every minute instead of every five
• Mailbox rotation: send one campaign from several mailboxes. Contacts are dealt out evenly, each stays with one mailbox so threads stay together, edits copy to every mailbox, and a rotation group counts as one campaign against your plan
• Email verification: a free automatic basic check on every contact (and campaigns now skip addresses that are certainly bad — switch it off in Settings), plus optional deep checks through your own ZeroBounce or MillionVerifier account
• AI drafts with your own key: connect Claude or any OpenAI-compatible service to draft inbox replies and sequence emails. A person always presses Send; nothing is sent automatically and there is no markup on your provider's charges
• Call tasks: add a phone-call step to a sequence. A new Calls page queues each call with a tap-to-call number and your notes, and records how it went
• Domain health on the dashboard: SPF, DMARC and DKIM checked for every sending domain, with plain-language fixes
• Webhooks now post readable messages straight to Slack incoming-webhook addresses; the contact page opens as a read-only summary with a single Edit button, and replies use a rich-text editor with no subject box
• REST API: sequence steps now carry a kind (email or call), and edits made through the API follow a rotation group's mailboxes
• Upgrading from 6.x needs nothing special — docker compose pull and up -d, or replace the binary. After upgrading, existing contacts get the background email check and the inbox begins storing emails with your contacts (both can be tuned in Settings)

A new Postgres-backed engine for accounts sending at real scale, real bounce and deliverability protection, and a hosted live demo you can try with no install and no card.

• Switched the underlying database to Postgres (bundled, zero-config) so large contact lists, imports, and tracking events stay fast and reliable at scale — existing installs upgrade in place, no data migration steps required
• New deliverability protection: real bounce detection, a daily per-mailbox sending ceiling, automatic warm-up ramp for new accounts, a small test batch before a full send, and an early pause that asks before a problem becomes a deliverability incident
• The Dashboard and campaign pages now show plainly why sending stopped — the real error, mailbox bounce health, and the exact checkpoint decision — instead of just going quiet
• Closed two bounce-visibility blind spots: a broken IMAP/OAuth connection now surfaces clearly instead of silently failing, plus an escape hatch for accounts stuck in a bad health state
• Sequence steps can now wait for a reply and branch — with automatic reply detection (via IMAP UID scan) and optional auto-reply — instead of every step firing on a fixed schedule regardless of what the recipient did
• Sending Calendar now shows an exact forecast with full per-day tooltips, a readable list layout on narrow screens, and dark-mode fixes
• Contact list import got a friendlier column-mapping map UX, lists can now be archived instead of only deleted, and a handful of system fields (source, imported-at) are tracked automatically per contact
• Click-tracking links now filter out known bot/prefetch traffic so open and click rates better reflect real humans
• New: try SubsiMail instantly at demo.subsimail.com — a real, working, pre-seeded copy of the app in your browser, no install and no card details needed

Three-way duplicate handling for contact imports, CSV exports on every stat card, and client-side pre-import validation.

• Contact imports (and the ‘Add a contact’ form) now support three duplicate rules — Skip, Merge (fill in blanks), or Replace (overwrite entirely) — plus an ‘existing contacts only’ scope for re-syncing enrichment data without creating new contacts
• Add several contacts at once from the same form with a ‘+’ button, instead of a CSV round-trip for just a handful of rows
• Every dashboard and campaign stat card now offers a ‘Download CSV’ of the exact filtered rows behind that number
• New ‘Validate file’ button on the import mapping screen checks your file for bad emails, dates, and numbers entirely in your browser before you import — nothing is sent to the server for this step
• Failed sends now record why, visible in the drill-down table and its CSV export
• Fixed: the upgrade prompt on the Accounts page could get stuck open, blocking clicks elsewhere on the page
• The Sending Calendar's campaign list now shows the same ‘License limit reached’ badge as the rest of the app
• The license page's ‘Reconfirm now’ button now shows clear success feedback instead of a silent redirect

License limits are now visible and enforced everywhere in the UI, not just silently at send time.

• Connecting more mailboxes than your plan covers now shows a clear ‘License limit reached’ badge on that account, with a one-click upgrade prompt — instead of the account silently never sending, with no indication anywhere why
• The same badge and upgrade prompt now show on the Dashboard, Campaigns list, a campaign's own page, the Sending Calendar, and the New Campaign / connect-account flows for any campaign or account beyond your plan's seat count
• A site-wide banner now appears whenever more accounts are connected than your license covers (e.g. after a downgraded or lapsed subscription), telling you exactly how many are paused and linking straight to your plan
• The License settings page and Accounts page both show a plain ‘Email accounts: used / limit’ count, in red with a tooltip explaining which accounts are affected once you're over
• New per-campaign ‘Sent via SubsiMail’ backlink toggle: still mandatory on the free plan, but now a free choice for every paid plan (previously it was only ever shown on the free tier, with no way to opt in on a paid one)

Contact imports now run in the background, scale to hundreds of thousands of rows, and notify you when done.

• Importing a CSV or XLSX file no longer ties up the page (or a reverse proxy's request timeout) for the whole import — it now runs as a background job with a live progress page (row count, percentage, and a created/updated/duplicate/skipped breakdown updating every few seconds)
• CSV imports stream row-by-row instead of loading the entire file into memory, and rows commit in batches instead of one at a time — roughly a 75-100x throughput improvement, so a six-figure-row file finishes in minutes instead of the better part of an hour
• Every skipped row is now recorded with why (missing/invalid email, or the underlying error), downloadable as a CSV with reasons right from the import summary
• Safe to close the tab: the Contacts page's Lists table shows a live “Importing… N%” badge on any list with a running import, so navigating away and coming back — even much later — always finds your way back to that job's progress
• If you've configured system email, you now get a completion email with the final counts and links to the imported list and any failed-rows download

Multi-step sequences now thread correctly over Amazon SES, plus deeper campaign/dashboard drill-downs.

• Fixed a bug where a sequence's follow-up steps could send with a blank subject and land as a disconnected new email instead of a reply in the same thread — root-caused to Amazon SES silently replacing the Message-ID on every send; the app now reads back SES's real assigned ID and anchors the next step to it
• Fixed the REST API's step-creation endpoint sending a blank subject on follow-up steps (the web UI's own form was never affected)
• Every dashboard and campaign Insights stat card (including Unsubscribes) is now clickable, drilling into the same paginated per-contact table — previously only the dashboard's per-campaign table cells linked anywhere
• That drill-down table now shows the request's User-Agent on opens/clicks, so a corporate link-scanner's automated hit is easy to tell apart from a real recipient
• Contact name and email are now clickable through to that contact's own page everywhere a contact list is shown, including for contacts with no name on file
• The campaign Preview tab's contact picker is now a type-to-search box instead of loading every enrolled contact into one dropdown

Campaign schedule visibility, an A/B message preview, and password-field usability.

• Campaign list and dashboard gain a “Schedule” column — at a glance, when a campaign is due to start or when it actually started, shown in its own timezone
• An active campaign that isn't currently sending now explains why right on its detail page (account paused, or outside the account's or campaign's own sending window) instead of leaving you guessing
• A/B test steps get a read-only side-by-side view of both variants, plus a badge marking which steps have a B variant
• Adding contacts from a list that's already fully enrolled now shows exactly which list(s) matched, instead of silently doing nothing
• Every password field in the app now has a show/hide toggle
• Google/Microsoft OAuth setup and the SMTP/IMAP connect form moved into proper dialogs for consistency with the rest of the app
• License and setup pages now show every timestamp in your own timezone and 12-hour time, matching the rest of the app

A/B testing, a real batch-sending engine per account, and full timezone support.

• A/B testing on any campaign — split contacts into groups A/B at enrollment and test subject, body, and/or send-time independently per step; results show side by side in Insights, with no auto-declared winner
• Sending limits rebuilt from the ground up: each account now has its own timezone and AM/PM sending window, and sends in randomized batches (e.g. 10–30 emails every 15 minutes) shared fairly across every campaign using that account at once, instead of a flat seconds-based gap
• An account now pauses itself automatically if a send attempt looks like the provider blocking it for volume (clears on its own the next day) or any other account-wide error (shows the actual provider error text) — Resume is always available either way
• A live “will this reach your daily limit” hint on the sending-limits dialog, so you don't have to do that math by hand; an auto-calculate mode still works out batch size/interval from a daily target
• Reply-To on a campaign is now a picker over your connected accounts (or any outside address), with a Connected / Not connected note explaining whether reply/bounce metrics will actually be tracked
• Every timezone picker in the app (campaigns, sending accounts, the dashboard calendar) now offers the full real-world zone list with each one's current UTC offset shown, and a campaign whose timezone differs from its sending account's own gets a non-blocking heads-up
• Sending-hour fields everywhere now show AM/PM instead of a 24-hour number

Quick date-range presets and a campaign filter on the dashboard.

• Today / Yesterday / This week / Last week / This month / Last month / Custom presets on the dashboard and the per-campaign Insights tab, instead of only manual From/To dates
• New campaign filter on the dashboard — a multi-select checkbox dropdown, scoping every chart, the map, and the campaign breakdown table to just the campaigns you pick
• Dashboard's default range is now “this week” instead of a rolling 30 days

A Settings hub, and a fix for API key creation.

• New Settings page in the sidebar — one place for API keys, your profile, license, and (for admins) organization, webhooks and team
• API keys are finally reachable from the UI (they were there all along, just unlinked)
• Fixed: reloading the page right after creating an API key no longer silently creates another one
• The “Copy” button on a new API key now confirms it copied

Visual analytics with a world map, and typed custom fields.

• Dashboard charts — open / click / reply / bounce rates, activity over time, an engagement funnel, and a campaigns-by-volume bar, all for the date range you pick
• World map of where your opens come from, plus a country ranking — country resolved locally from the open, nothing sent to a third party
• New “Insights” tab on every campaign: the same charts scoped to one campaign, plus a per-step performance breakdown
• Open and click events now record their country; it shows in the drill-down tables too
• Custom fields are now typed — text, number, email, phone, URL, date, date & time, or yes/no — with the right input on the contact form and validation on save and import
• Everything ships inside the binary as always: no CDN, no external calls, upgrade with a plain docker pull

Smart Search, a one-command database backup, and hardened login security.

• Smart Search — a query language (plus a point-and-click builder) for finding contacts by status, activity, custom fields, lists, campaigns and more — in the app and over the API
• New API endpoint: GET /api/v1/contacts/search, same query language, same auth
• backup-db CLI command — a one-off, consistent database snapshot to any path you choose
• Accounts now lock temporarily after repeated failed login attempts
• Raspberry Pi / ARM64 Docker images built natively, no emulation
• A fresh install now checks for a newer version on first run

Team-grade access control, a full audit trail, and a public REST API.

• Universal audit trail — every change records who, when, and from where
• Archiving and soft-delete everywhere — nothing is ever hard-deleted, restore any time
• Per-user sharing and access control on campaigns, contacts, and templates
• Full JSON REST API (/api/v1) with personal API keys — drive SubsiMail from n8n, Zapier, or your own code
• IP capture and client-timezone awareness in the audit log
• Per-campaign Reply-To override

Encrypted credentials, scheduling, and a rebuilt campaign workspace.

• OAuth tokens and SMTP/IMAP passwords encrypted at rest
• Outbound webhook delivery for API integrations
• Campaign scheduling with timezone-aware sending windows
• Campaign detail page rebuilt with inline sequence editing and a settings tab
• Free tier set to 1 connected mailbox, with an attribution footer on its outgoing mail

Team roles, real licensing, and a faster contacts workspace.

• Multi-user accounts with role-based access control
• Signed (Ed25519) license verification, replacing the early activation stub
• Contacts search, filtering, and pagination
• License account limit enforced at send time, not just at connect time

Initial release.

• BYOC Gmail and Outlook OAuth, plus SMTP/IMAP accounts
• Multi-step campaign builder with a sending engine
• Automatic stop-on-reply detection
• Open and click tracking with a real dashboard
• Docker packaging with a static musl binary