Free forever · no login · no gating

WhatsApp Web.
On superpowers.

Effess turns WhatsApp Web into a complete sales workspace — CRM, kanban pipeline, bulk sender with anti-ban pacing, scheduler, auto-reply, and AI assistant. Built for teams. Free, forever.

Superpowers · only on Effess

4 things no other WhatsApp tool has.

We didn't build another scheduler. We built the things competitors can't — fixing the bans, the demos, the labels, and the typing.

01 / 04No competitor has this

AI rewrites every message. Ban-proof.

Problem: Send the same copy to 1000 numbers → instant WhatsApp ban.

Effess: Effess AI generates a unique version for every recipient. Same intent, different words, every single time.

8 structural bucketsJaccard ≤ 55%Length zig-zagVariables preserved
See how it works
AI is writing variant #N for recipient #N…
5 of 1000 unique variants · 0 duplicates
02 / 04No competitor has this

Generate fake chats for demos. One click.

Problem: Need to demo your kanban / pipeline / bot — but you don't want to expose real customer chats.

Effess: Spawn convincing 5-message WhatsApp threads instantly. Real timestamps, unread badges, alternating directions. Wipe whenever.

Local-onlySeeds Dexie + WA storeUnread badgeOne-click wipe
See how it works
P
Priya · Demo lead
typing…
FAKE
seedFakeChat('Priya', '+91…') · 5 msgs · 0 real contacts touched
03 / 04No competitor has this

Stack unlimited tags. Filter combinations.

Problem: WhatsApp Business gives you ONE label per chat. You can't tag 'hot-lead' + 'paid' + 'follow-up-tuesday' on the same person.

Effess: Effess lets you stack unlimited tags per chat. Color-code. Filter by ANY or ALL combinations. Segment along any dimension you need.

Unlimited tags16-color paletteAny / All filter modesBulk-assign from sender
See how it works
P
Priya Mehta
last seen 2m · 8 tags
VIPhot-leadpaidEOMmumbaiwebinarenterprisefollow-up-tue
Filter: VIP AND hot-lead AND EOM → 47 matching chats
04 / 04No competitor has this

Speak to WhatsApp. Hands-free, 18 languages.

Problem: Hands full — driving, cooking, in a meeting. Typing isn't an option but you still need to send a quick WhatsApp action.

Effess: Speak commands. Effess understands 13 intents in 18 languages and acts in 200ms. 'Open chat with Mom', 'archive this', 'type hello there'.

13 built-in intents18 BCP-47 languagesFuzzy chat matchingLLM fallback
See how it works
Recognized · en-US
chat opened
The full toolset

Plus everything else you need.

Twelve more power tools beyond the superpowers. All in one Chrome extension. Zero login. Zero gating.

Kanban pipeline

Drag-and-drop deals across stages. Default pipeline ships with 5 columns; add your own, color-code, and watch chats sync in real-time.

Bulk sender · anti-ban

Send thousands of personalized messages with intelligent pacing. Random delays, hourly caps, warm-up mode for new numbers, and instant pause on WA ban-warnings.

0messages / hour · safe default

Scheduler

Fires even when the WhatsApp tab is closed. Powered by chrome.alarms.

Auto-reply rules

First-message · keyword · time-window. No-code rule engine.

AI assistant

BYOK OpenAI · Anthropic · Groq. Translate, smart-reply, summarise.

Templates + slash

Type / inside the WA composer to fire any saved template.

Tags & labels

Organize chats. Filter the inbox the way you think.

Google Sheets sync

Two-way sync contacts and campaign logs into Sheets.

Webhooks

POST every inbound/outbound event to your stack.

Voice messages

Record, preview, send — straight from the composer.

Status saver

Archive any contact's status.

16 languages

Built-in i18n. Spanish, Portuguese, Hindi & more.

How it works

From install to sent campaign in 3 minutes.

No backend setup. No API keys (unless you choose AI). No team onboarding calls.

1. Install in Chrome

One click from the Chrome Web Store. The extension loads silently next to web.whatsapp.com — no account, no signup, no permissions ceremony.

2. Open WhatsApp Web

A floating Effess panel docks onto your WhatsApp tab. Your existing chats, contacts, and groups are recognised instantly — everything stays local in your browser.

3. Launch your first campaign

Import a list, draft a message with templates and variables, set safe pacing, and hit send. Watch the live queue, track delivery, get notified on completion.

0+
Power features built-in
0
Languages out of the box
0/hr
Safe send-rate default
0
Login · gating · paywall
Loved by teams

Used by growth teams, agencies, and solo founders.

Real reviews from real Effess users. No paid endorsements.

PM
Priya M.
Founder · D2C jewellery
We replaced three SaaS tools with Effess. The kanban + scheduler combo finally lets my team stop juggling spreadsheets.
CR
Carlos R.
Growth lead · LatAm SaaS
Anti-ban pacing actually works. We've sent 40k+ messages without a single number flagged. Português support is a bonus.
AK
Aisha K.
Real estate broker
Templates with slash trigger saves me 90 minutes a day. The CRM tags help me remember which lead is which.
DS
Daniel S.
Customer success · agency
The webhook integration into our backend was 5 minutes of work. Now every WA reply auto-creates a ticket.
RL
Renata L.
Solo coach
Voice messages straight from the composer plus AI smart-reply = my superpower for onboarding new clients.
VT
Vikram T.
Bulk SMS migrator
Excel import + scheduler + warm-up mode = we moved 12k contacts from SMS to WhatsApp in a weekend.
PM
Priya M.
Founder · D2C jewellery
We replaced three SaaS tools with Effess. The kanban + scheduler combo finally lets my team stop juggling spreadsheets.
CR
Carlos R.
Growth lead · LatAm SaaS
Anti-ban pacing actually works. We've sent 40k+ messages without a single number flagged. Português support is a bonus.
AK
Aisha K.
Real estate broker
Templates with slash trigger saves me 90 minutes a day. The CRM tags help me remember which lead is which.
DS
Daniel S.
Customer success · agency
The webhook integration into our backend was 5 minutes of work. Now every WA reply auto-creates a ticket.
RL
Renata L.
Solo coach
Voice messages straight from the composer plus AI smart-reply = my superpower for onboarding new clients.
VT
Vikram T.
Bulk SMS migrator
Excel import + scheduler + warm-up mode = we moved 12k contacts from SMS to WhatsApp in a weekend.
VT
Vikram T.
Bulk SMS migrator
Excel import + scheduler + warm-up mode = we moved 12k contacts from SMS to WhatsApp in a weekend.
RL
Renata L.
Solo coach
Voice messages straight from the composer plus AI smart-reply = my superpower for onboarding new clients.
DS
Daniel S.
Customer success · agency
The webhook integration into our backend was 5 minutes of work. Now every WA reply auto-creates a ticket.
AK
Aisha K.
Real estate broker
Templates with slash trigger saves me 90 minutes a day. The CRM tags help me remember which lead is which.
CR
Carlos R.
Growth lead · LatAm SaaS
Anti-ban pacing actually works. We've sent 40k+ messages without a single number flagged. Português support is a bonus.
PM
Priya M.
Founder · D2C jewellery
We replaced three SaaS tools with Effess. The kanban + scheduler combo finally lets my team stop juggling spreadsheets.
VT
Vikram T.
Bulk SMS migrator
Excel import + scheduler + warm-up mode = we moved 12k contacts from SMS to WhatsApp in a weekend.
RL
Renata L.
Solo coach
Voice messages straight from the composer plus AI smart-reply = my superpower for onboarding new clients.
DS
Daniel S.
Customer success · agency
The webhook integration into our backend was 5 minutes of work. Now every WA reply auto-creates a ticket.
AK
Aisha K.
Real estate broker
Templates with slash trigger saves me 90 minutes a day. The CRM tags help me remember which lead is which.
CR
Carlos R.
Growth lead · LatAm SaaS
Anti-ban pacing actually works. We've sent 40k+ messages without a single number flagged. Português support is a bonus.
PM
Priya M.
Founder · D2C jewellery
We replaced three SaaS tools with Effess. The kanban + scheduler combo finally lets my team stop juggling spreadsheets.
Pricing

Free, forever.

Effess is built on the principle of no gating. No license keys, no trial timers, no ‘Pro’ tier hiding the good stuff.

Personal
$0
forever · for everyone
  • All 12 features unlocked
  • Unlimited bulk campaigns
  • Unlimited automations
  • Local data — your browser, your control
  • Community support
Add to Chrome
Teams (coming soon)
Pay what you want
optional · supports development
  • Everything in Personal
  • Shared team templates & pipelines
  • Cloud sync across devices
  • HubSpot / Salesforce / Zoho native sync
  • Priority email support
Join the waitlist

Effess will always have a free, fully-featured tier. The Teams tier is purely optional — pay only if you want shared cloud-sync or to support development.

FAQ

Questions, answered.

Yes — fully free, no trial, no feature gating. We may add an optional paid Teams tier later for cloud-sync and CRM integrations, but the core 12 features stay free forever.

Stop juggling tabs.
Start running WhatsApp like a CRM.

Free. No login. Works on any WhatsApp number. Install in 10 seconds, see results in your first hour.