The only truly free email warmup tool for unlimited inboxes
Stop paying $25 per month for every inbox you want to warm up. Deploy Linki, the open-source AI SDR, and manage unlimited outreach accounts for one flat hosting fee.
The death of the free warmup tool
Most "free" warmup tools have disappeared. Popular services like Gmass have restricted their tiers, while SaaS giants like Instantly or Mailreach now charge between $25 and $79 per month for a single inbox. If you are running a modern cold email operation with 10 or 20 domains, those subscriptions quickly become your largest overhead.
Why Linki is different
Linki is an open-source AI SDR and outreach platform. Because it is self-hosted, there is no centralized authority charging you for every connection. You own the software, you own the data, and you dictate the volume. By deploying Linki on Opsily, you bypass the "warmup tax" entirely.
We provide the dedicated infrastructure in Germany; Linki provides the automation. Together, they create a persistent, cost-effective environment for scaling your B2B lead generation without the scaling costs.
SaaS vs. Self-Hosted Warmup
See why high-volume senders are moving to self-hosted Linki.
SaaS pricing based on average 2024 per-inbox rates.
Why host your free email warmup tool on Opsily?
We handle the technical complexity of self-hosting so you can focus on closing deals using our free email warmup tool strategy.
Bypass warmup footprints
Centralized SaaS warmup pools are often flagged by Google and Yahoo because thousands of users share the same network patterns. Your Opsily instance is isolated, giving your warmup activity a unique, human-like footprint.
Instant AI SDR deployment
Get Linki running in under three minutes. Our automated installer configures the Node.js environment and SQLite database so you can start connecting LinkedIn and Email accounts immediately.
Automated maintenance
We handle the backups and security patches for your server. Your warmup runs 24/7 without you needing to check on server health or software versions.
Built for teams who need reliability
Saved per 10 inboxes
Running Linki on Opsily eliminates the per-seat costs that bloat SaaS outreach budgets.
Start Saving NowLaunch your warmup in 3 steps
Choose Your App
Select an app to get started.
Select Linki
Find Linki in the Opsily app catalog and choose your hosting plan. We recommend the 'Small' plan for up to 3 outreach apps.
Connect Accounts
Add your SMTP/IMAP credentials and LinkedIn profiles. Linki handles the authentication securely on your private server.
Start Warming
Toggle the warmup feature. Linki begins simulating human interactions to build your sender reputation safely.
Email Warmup & Linki FAQ
Yes, Linki is open-source software that you can use for free. While SaaS competitors charge for every inbox, Linki allows you to add as many accounts as you want. You only pay for the private server hosting provided by Opsily, which starts at one flat monthly fee regardless of how many inboxes you warm up.
Transparent hosting for Linki
No hidden fees. No per-user costs. Just reliable German infrastructure.
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