Everything you need to win in the inbox
Connect inboxes, ramp them up, send sequences and work every reply — from one workspace, with an agent in Slack and an API for everything else.
Connect every inbox you send from
Gmail over OAuth, or any SMTP/IMAP mailbox on your own domain. Rotate sends across as many as you need.
Ramp up every new inbox gradually
New inboxes ramp up gradually, and every account gets a health score so you know which ones are ready.
Build sequences that stop on reply
Multi-step campaigns with send windows and timezones you choose. The moment someone replies, their sequence stops.
One inbox for every reply
Replies from every inbox land in one place, sorted into replies, out-of-office, bounces and noise. Answer without switching tabs.
Ask the agent from Slack
Ask how campaigns are doing, or tell it to pause, resume or update something. Every change waits for your confirm.
Build on the API and webhooks
-H "Authorization: Bearer cl_test_…"
A REST API with test-mode keys, plus signed webhooks for replies, bounces, sends and campaign changes.
Follow-ups that know when to stop
Write each step once, personalise it with variables, and Clement sends it inside the send window you set, in the timezone you sell into — and stops the sequence the moment they reply.
Multi-step sequences
As many steps as you need, each with its own delay, sent in the same thread.
Send windows
Pick the days, hours and timezone each campaign is allowed to send in.
Personalisation
Merge first name, company and any custom field into every subject and body.
Stops on reply
Nobody gets a follow-up after they’ve answered. Not even by accident.
Every reply, sorted before you open it
Replies from all your inboxes land in one place. Clement separates real answers from out-of-office, bounces and noise — and protects your domains while it does.
Reply classification
Every inbound message is tagged as a reply, an auto-reply, a bounce or unrelated mail.
Answer in place
Reply from the same inbox and thread the prospect wrote to, right inside Clement.
Bounce protection
Campaigns pause automatically when hard bounces pass 5%, before your domain pays for it.
Suppressions & unsubscribes
One-click unsubscribe and a workspace suppression list, so nobody hears from you twice after opting out.
Know what’s working while it’s happening
Opens, clicks, replies and bounces per day, per campaign and per inbox — so you can double down on what lands and fix what doesn’t.
Open & click tracking
Turn tracking on per campaign and see every open and click as it comes in.
Campaign performance
Compare reply and bounce rates across every campaign side by side.
Inbox volume
See how much each mailbox is sending, and spot the one that’s struggling.
Bounce monitoring
Catch deliverability problems early, before they spread across campaigns.
Wire Clement into your workflows
Everything you need to land in the inbox
The unglamorous parts of cold email — schedules, rotation, verification, unsubscribes — handled, so you can focus on what you say.
Send in the timezone you sell into
Send from every inbox
Verify before you send
Test mode for developers
Check your setup before you hit send
Seven free tools for the deliverability, copy and planning work behind every campaign — no signup, no email gate.
- Deliverability
SPF, DKIM & DMARC checker
Grade your domain’s authentication against Gmail, Yahoo and Microsoft sender rules.
- Deliverability
Email header analyzer
Check SPF, DKIM and DMARC alignment and trace the route hop by hop, in your browser.
- Deliverability
SMTP error code lookup
Paste a bounce and see what the code means, hard or soft, and how to fix it.
- Writing
Cold email checker
Flag spam phrases, score length, links and the ask, and get an AI review.
- Writing
AI cold email generator
Turn prospect context into first lines, two email variants and a follow-up.
- Writing
Spintax generator & checker
Validate spintax, count the variations and preview real spins.
- Planning
Inbox & domain calculator
How many inboxes and domains your daily volume needs, and what they cost.
- All tools See all free tools
No signup, no email gate. Bookmark the ones you need.
Frequently Asked Questions
How Clement works, what it connects to, and what it costs.
Ready to see it yourself? Try free for 14 days
Comparing plans? See pricing
What is Clement?
Clement is a cold-email platform. You connect the inboxes you send from, Clement ramps up their volume gradually, sends your multi-step sequences inside the windows you choose, stops each sequence when someone replies, and gathers every answer in one inbox.
How do I get started?
Start the 14-day free trial, connect a Gmail or SMTP inbox, import your leads and write your first sequence. New inboxes ramp up gradually, so you can start sending on day one.
Which inboxes does it work with?
Gmail and Google Workspace over OAuth, plus any mailbox that speaks SMTP and IMAP — Zoho, iCloud, Fastmail or your own server. Outlook support is coming soon.
How does Clement protect my deliverability?
New inboxes ramp up their daily volume gradually, every account gets a health score, contacts can be verified before launch, and campaigns pause automatically if hard bounces pass 5%. Unsubscribes and suppressions are handled for you.
What does the Slack agent do?
Add Clement to Slack and ask it how your campaigns are doing, or tell it to pause, resume or change something. It always shows you what it’s about to do and waits for you to confirm.
Is Clement suitable for agencies?
Yes. Run each client in its own workspace with its own inboxes, campaigns and contacts, and switch between them from the sidebar.
How is Clement priced?
Pro is $49 a month, Scale $149 and Hyper $399 — about two months free if you pay yearly. Every plan starts with a 14-day free trial; you add a card when you sign up and can cancel anytime before it ends.