Warmy Enhances Seed List Experience with Seed List Receiver Update and Performance Statistics

Warmy has released two powerful features designed to transform how you manage and monitor your seed lists. Here’s what’s new:

Feature 1: Seed List Receiver Update

• Download only the seeds that changed since your last update instead of importing full 500-line CSVs
• System automatically tracks what’s been replaced and what’s new

Feature 2: Seedlist Performance Statistics

• New “Performance” tab shows key metrics: emails read, clicks, spam recovery, and promotions movements
• Filter by seedlist provider and track trends over time

Seed List Receiver Update: The solution to the CSV nightmare you didn’t sign up for

There’s no doubt that seed lists are valuable for warmup and email deliverability. They help you monitor inbox placement, track spam folder rates, and maintain a strong sender reputation. 

But the moment a receiver gets blocked (which happens naturally as part of deliverability monitoring) your list is officially out of date. If you miss that update, you’re sending to dead addresses, triggering hard bounces, and damaging the very reputation you’re trying to protect.

Hence, Warmy regenerates seed lists frequently to ensure you’re sending to quality seeds. This is how the process looks like:

• Seed lists are updated due to natural receiver blocks. This is done daily, and sometimes even multiple times a day.
• Every time receivers are replaced, users must manually update all their lists as part of ESP contact list management. (Klaviyo, SendGrid, Mailchimp, etc.)
• Users will need to download the updated seed list from Warmy and import them into their platform

While effective, this repetitive manual task can be overwhelming—especially for high-volume senders who manage multiple contact lists across different ESPs.

The Warmy Research team also observed that only 25% of users download and apply the rotated seed lists. The other 75% are continuing to send to outdated receivers, risking SMTP errors, hard bounces, and tanking their reputation.

While receiver blocks cannot be controlled, the process of updating seed lists can be enhanced to reduce repetitive tasks, workload, and simplify processes.

How Warmy’s new Seed List Receiver Update feature works:

Maintaining up-to-date seedlists ensures your data is accurate and your bounce rates stay low. Warmy built a solution that respects your time while keeping your deliverability on track.

How it works:

• Instead of having to download and re-process your entire seed list every time a receiver changes, Warmy now gives you the option to download only the “Updated List” file.
• This incremental update contains exactly the seeds that were removed (blocked) and exactly the seeds that were added (replacements) since your last download.
• Warmy’s system automatically tracks what’s been replaced and what’s new, combining multiple days of updates into a single file. So if multiple updates happened across several days (Example: 2 receivers replaced on Sep 28, 3 on Sep 29, and 1 on Sep 30), downloading on Oct 2 gives you all six updated receivers in one file, automatically combined for your convenience.

Key advantages and benefits of the Seed List Receiver Update feature

• “One-time download rule.” Warmy’s system is smart enough to track the last download timestamp. You can download the Seed List Receiver Update file only once per update event, which prevents confusion and ensures clarity. You always know exactly which changes you’ve already applied and which are new. No duplicates, no confusion, just clean data every time.
• Reduced manual editing from 20-30 minutes to 2-3 minutes: Update only what changed in your ESP contact lists instead of re-importing 500 lines (or more).
• Zero-bounce maintenance: Keep your lists clean and avoid hard bounces without the heavy lifting.
• Easier management for multiple splits: Manage seed lists across different campaigns or ESPs without drowning in CSV files.

How to access the Seed List Receiver Update