If you send from Mailchimp, Klaviyo, Omnisend, ActiveCampaign, Shopify, or any other platform that does not support SMTP mailbox connection, you need a seed-list warmup instead of traditional inbox warmup.
This article compares E-Warmup Seedlist Warmup with Warmy’s Seed List so you can choose the model that fits your sending volume and budget. Both E-Warmup and Warmy offer seed-list based solutions for non-SMTP platforms, but the pricing models and flexibility differ significantly.
Feature / Plan | E-Warmup Seed List Warmup | Warmy Seed List Warmup |
Pricing model | One-time credit packs | Monthly subscription |
Entry price | $19 (200 credits + unlimited sender) | Starts $199/month (500 seeds + 1 sender) |
Seed rotation | Everyday | Once a month |
Credits / seeds | Pay only for what you use | Ongoing monthly access (same seed) |
Credits expire? | Never | Subscription required to keep access |
Providers | Mixed B2B/B2C providers (Gmail, GSuite, Outlook, Office 365, Yahoo, Others) | Separate lists often required per provider (Gmail, Outlook, Yahoo, GSuite, MS365) |
Campaigns | Unlimited with available credits | Tied to active subscription |
Inbox placement report | Included | Available |
Best for | Campaign-based or occasional use, cost control, flexibility | Teams wanting continuous monthly access |
Extra cost risk | None — buy only when needed | Can rise quickly if you need to send for multiple or more senders |
E-Warmup You buy seed credits once (Launch $19 / Campaign $37 / Session $55, or custom DFY). Credits never expire. You create a campaign, add your sender, drop the tracking code in the subject line, download a CSV, and send from your ESP. Seeds rotate every day, and you get a mixed Gmail, GSuite, Outlook, Office 365, Yahoo, and other B2B/B2C list in one download.
Warmy Seed lists are sold as a monthly subscription, typically starting around $199/month for 500 seeds and one sender. Rotate about once a month, and access stops when the subscription ends. Adding extra senders or extra provider lists usually increases the monthly bill.
Choose E-Warmup Seedlist if you:
Need a quick initial or manual warmup for your email platform
Run campaigns occasionally (Black Friday, product launches, weekly/monthly sends)
Want to pay only when you actually send
Need mixed Gmail + Outlook + Yahoo + others in one list
Prefer credits that never expire
Want to keep extra sender cost at zero
Choose Warmy Seed List if you:
Prefer a recurring subscription
Are already using Warmy’s other warmup products and want everything in one vendor
Summary
E-Warmup is significantly more affordable for most users, especially if you run campaigns periodically rather than needing continuous access. Credits never expire, the provider mix is included, and you avoid monthly lock-in.
Warmy tends to be more expensive at entry and is structured as a recurring subscription, which can make sense for very high-volume teams that want large dedicated splits refreshed monthly.
For the majority of Mailchimp, Klaviyo, Omnisend, ActiveCampaign, and similar users, E-Warmup’s one-time credit model delivers the same core benefit (real engagement signals + placement insight) at a fraction of the ongoing cost.
Need help deciding how many credits to buy? Start with the 200-credit Launch pack and scale only if you need more.
Introducing Seedlist Warmup
Warmup for Mailchimp, Klaviyo, Omnisend, Shopify, and any ESP that doesn’t support SMTP
