Warmup Launch
$19
One-time · 200 seed credits- Unlimited Campaign
- Seed Test
- Warmup Actions
- Inbox Placement Report
- B2B-B2C Seed lists
Seed List WarmupNo SMTP access?
Warm up anyway.
Add our seedlist to Klaviyo, Mailchimp or Shopify Email. Real Gmail, Outlook and Yahoo inboxes engage and build your reputation.
Works with your email platform
21 ESPs and counting
Klaviyo
Mailchimp
Shopify Email
ActiveCampaign
HubSpot
Omnisend
MailerLite
Constant Contact
Campaign Monitor
Moosend
Kajabi
beehiiv
Substack
Kit
Ghost
BigCommerce
WooCommerce
Salesforce
Intercom
Zendesk
FrontPlus any ESP that can import a CSV
No SMTP needed0
SMTP or IMAP connections
∞-ESP
Works with any email service provider
2-3 wks
To better inbox placement
$19
To start. Credits never expire
Features
Mailbox warmup needs SMTP
Your ESP won't give it
Klaviyo, Mailchimp and Shopify send from their own servers, so classic email warmup has nothing to log in to. A seed list works from inside your ESP instead.
SMTP mailbox warmup
- Needs SMTP or IMAP logins your ESP never hands out
- Can't reach Klaviyo, Mailchimp, Shopify Email or HubSpot sends
- Leaves a new domain with no reputation before launch
Seed list warmup
- Works with any ESP that can import a CSV
- Sends real campaigns from your ESP, with no SMTP or API access
- Reports inbox placement at Gmail, Outlook and Yahoo
Seedlist warmup for any ESP that imports a CSV
KlaviyoMailchimpShopify EmailActiveCampaignHubSpotOmnisendMailerLiteConstant ContactCampaign MonitorMoosendKajabibeehiivSubstackKitGhostBigCommerceWooCommerceSalesforceIntercomZendeskFrontKlaviyoMailchimpShopify EmailActiveCampaignHubSpotOmnisendMailerLiteConstant ContactCampaign MonitorMoosendKajabibeehiivSubstackKitGhostBigCommerceWooCommerceSalesforceIntercomZendeskFrontSeed List WarmupHow seed list warmup works in simple steps
Choose your pack
Warmup Launch — 200 seed credits$19
Warmup Campaign — 600 seed credits$37
Warmup Session — 1,000 seed credits$55
Sender address
Selected
Campaign
Credits
600
Total
$37
Never expire
Pay per download
Every plan
Pricing
Seed list pricing
pay per campaign
One credit is one seed contact. Buy a pack once, use it across every campaign, no monthly fee.
Warmup Campaign
$37
One-time · 600 seed credits- Unlimited Campaign
- Seed Test
- Warmup Actions
- Inbox Placement Report
- B2B-B2C Seed lists
Warmup Session
$55
One-time · 1,000 seed credits- Unlimited Campaign
- Seed Test
- Warmup Actions
- Inbox Placement Report
- B2B-B2C Seed lists
DFY Pack
Custom
Talk to support for a quote- Unlimited Campaign
- Fully Managed
- White-label reports
- API & Automation
- Dedicated Support
Credits never expire and are only used when you download a CSV. They work on every E-Warmup plan, separate from your mailbox subscription.
Why a seed list?
Why a warmup seed list
builds real inbox trust.
A placement test tells you where you land. Seedlist warmup changes where you land, with real engagement repeated over weeks.
Gmail
Outlook
Yahoo
AOLiCloud
ZohoGMX
Proton MailYandexMix B2BMix B2COthersReal seed inboxes
Curated, engaged inboxes across Gmail, Outlook, Yahoo, AOL, iCloud, Zoho, GMX and more, in B2B, B2C or mixed lists.
What seeds do with your email
AI Read Emulation
Report as not spam
Promotions to Primary
Mark as important
Click links
Reply
Zero SMTP required
No SMTP, IMAP or API access. Your ESP sends; seeds engage.
A fresh list every time
Each CSV download is a new seed list, mixed across providers.
Placement by provider
See inbox, promotions and spam separately for every provider.
Email warmup for the platforms
mailbox tools can't touch
Ecommerce and DTC
Klaviyo and Omnisend flows where every spam-foldered email costs revenue.
Klaviyo
Omnisend
Shopify EmailNewsletters
Substack, beehiiv or Kit publishers with no mailbox to connect.
beehiiv
Substack
KitNew domains and IPs
Build sending history before the first real campaign goes out.
Mailchimp
MailerLite
HubSpotReputation recovery
Climb out of spam after a bad send or a blocklisting.
ActiveCampaign
KajabiEmails going to spam
Klaviyo sends from shared infrastructure, so new or cold domains often lack the engagement signals providers need. Seed list warmup builds that history from real Gmail, Outlook and Yahoo inboxes without SMTP access.
Mailchimp campaigns inherit reputation from your domain and content. If engagement is low or the domain is new, filters push mail to spam. Warming with seeds creates consistent opens and replies before you send to customers.
Shopify Email and similar ESP tools manage delivery on their side. Without mailbox login, classic warmup cannot run. A seedlist imported into your flow engages messages the same way live subscribers would.
About seed list warmup
Seed list warmup is engagement-based warmup for ESP senders. You buy credits, download a CSV of seed inboxes, send from your platform, and those inboxes open, reply and move mail so placement improves over time.
One credit equals one seed contact. Buy a pack once, download a CSV when you need it, and credits only deduct on download. They never expire and work separately from any mailbox subscription.
Any ESP that can import a CSV — including Klaviyo, Mailchimp, Shopify Email, ActiveCampaign, HubSpot, beehiiv, Substack, Kit and dozens more. No SMTP or API connection is required.
No. Warmup sends go only to the seed addresses you import. Your customer list stays untouched while seeds build reputation on the same sending identity.
Yes. Seed list warmup covers ESP and marketing sends. Mailbox warmup covers SMTP-connected mailboxes. Many teams run both so outbound and marketing channels warm in parallel.
Warm up wherever you actually send
No mailbox access, no SMTP setup, no subscription. Download your seedlist and start building sender reputation today.
What you get
- Works with Klaviyo, Mailchimp, Shopify Email and dozens more
- AI Read Emulation, not-spam reports, clicks and replies from real seeds
- Packs from $19 — credits never expire
- Placement broken out by provider