Integrations
Cladiant + Lemlist
Real enterprise inboxes behind your Lemlist multichannel sequences.
Lemlist is a cold email and multichannel outreach platform.
Lemlist runs your multichannel sequences; Cladiant provisions the inboxes underneath. Three real providers in one order, DNS and authentication verified before sending, connected straight into Lemlist.
Dedicated Azure Entra tenants and a native Outlook experience mean your Lemlist campaigns send from real enterprise accounts, not a shared SMTP relay.
The handoff
How Cladiant hands off to Lemlist
Cladiant connects mailboxes to Lemlist with the account username and password, so they are ready to sequence in Lemlist.
Division of labor
Two layers, zero overlap
Lemlist runs the campaign. Cladiant runs the infrastructure it sends from. Neither does the other's job, which is exactly why they fit together.
Cladiant handles
- Google Workspace, Microsoft 365, and Azure Entra mailboxes
- Domain purchase plus SPF, DKIM, and DMARC on every domain
- A dedicated Azure Entra tenant per domain
- Deliverability monitoring that pulls a bad inbox to warmup
- Month-to-month billing on one invoice
Lemlist handles
- Multichannel sequences (email, LinkedIn, calls)
- Personalization with images and video
- Reply detection and lead database
- A/B testing across channels
Setup
From order to sending
- 01
Tell us your volume
Say how many emails a day you need to send. We size the mailboxes and domains so no single inbox or domain is overloaded.
- 02
We provision and authenticate
Real Google Workspace, Microsoft 365, and Azure Entra mailboxes, with SPF, DKIM, and DMARC written and verified on every domain before anything sends.
- 03
Connect to Lemlist
We hand the accounts to Lemlist using the credentials it expects, including a Microsoft OAuth link for Azure inboxes, so they land in your workspace ready to send.
- 04
Set safe limits and launch
Cap daily volume per mailbox, keep warmup running, and keep bounces low. Your campaigns run; we keep the infrastructure healthy underneath.
Sizing it
How many mailboxes you need
A safe cold-email cadence is 20 to 40 sends per mailbox per day across a few mailboxes per domain, with new mailboxes warmed up over two to four weeks and bounce rate kept low. A target of 1,000 sends a day works out to roughly 30 to 40 mailboxes across a dozen or so domains, and Lemlist rotates across them for you.
What you get
Infrastructure built for the inbox
01
Three real providers
Google Workspace, Microsoft 365, and Azure Entra in one order, not a single-source SMTP relay.
02
Authenticated before sending
SPF, DKIM, and DMARC written and verified on every domain before a mailbox goes live.
03
Dedicated Azure tenants
Every Azure domain in its own tenant, so your reputation is never pooled with other senders.
Troubleshooting
When something goes wrong, who fixes it
Most cold-email problems are either a sequencer problem or an infrastructure problem. Here is how to tell them apart, and which layer owns the fix.
| Symptom | Likely cause | How it gets fixed |
|---|---|---|
| Emails landing in spam on seed tests | A DNS or authentication gap, or a blacklisted domain | Cladiant re-checks SPF, DKIM, DMARC and reputation, then remediates or replaces the domain |
| Reply rate declining over several weeks | Domain or inbox reputation wearing down | Cladiant rotates sending to rested mailboxes and warms the affected ones back up |
| Bounce rate climbing above 2 to 3 percent | List quality, not infrastructure | Pause and re-verify the list before sending more; suppress hard bounces in the sequencer |
| Good deliverability but low replies | Copy or targeting, not infrastructure | A/B test messaging in your sequencer; if a plain-text version also lands in spam, it points back to infrastructure |
| A sudden drop across many inboxes at once | A shared-reputation or tenant-level problem | Isolated Azure tenants contain the blast radius, so Cladiant investigates only the affected tenant |
FAQ
Lemlist + Cladiant, answered
Does Lemlist provide the sending mailboxes?
Lemlist runs your multichannel sequences across email, LinkedIn, and calls, but the email mailboxes are separate infrastructure. Cladiant provisions real Google Workspace, Microsoft 365, and Azure Entra accounts and connects them into Lemlist.
Can I connect multiple mailboxes to Lemlist?
Yes. Cladiant connects mailboxes to Lemlist with the account username and password, and provisions across three providers in one order, so you can run a rotation of real inboxes behind your Lemlist campaigns instead of one or two senders.
Can I use Outlook and Azure Entra inboxes with Lemlist?
Yes. Cladiant provisions Microsoft 365 and Azure Entra with a native Outlook experience alongside Google Workspace, so your Lemlist email channel sends from real enterprise accounts rather than a shared SMTP relay.
How many mailboxes do I need for Lemlist?
Plan for 20 to 40 sends per mailbox per day across a few mailboxes per domain. For 1,000 sends a day that is roughly 30 to 40 mailboxes across a dozen domains. Our free volume calculator sizes it for your sequences.
Do Lemlist mailboxes need warmup?
Yes. New mailboxes need two to four weeks of warmup at a 2-to-1 ratio before full-volume cold sending. Cladiant mailboxes arrive authenticated on dedicated Azure tenants and ready to warm alongside your Lemlist campaigns.
Ready to run Lemlist on real infrastructure?
One order. One invoice. Mailboxes provisioned across three providers and connected straight into Lemlist.