Invite only. Places are limited.
The warm-up nobody talks about.
The first human-grade engagement warm-up pool, built for scale. Private, invite only, and nothing like the warm-up networks everyone else runs on.
- Day one. Every new inbox starts gently.
- Engaged with. Your email is handled the way people handle mail they want.
- A rough patch. Placement slips, you see it, and the tree grows on.
- Your voice. Warm-up written the way you write.
- Today's ring. Each day's placement is recorded for you.
- 0swap networks
Your inboxes never trade mail with strangers' inboxes.
- 0warm-up tags
Nothing in your subject lines for a filter to catch.
- 1placement read
For every inbox, every day: inbox or spam.
- 1,000sof inboxes at once
Google Workspace and Microsoft 365, connected by the list.
Six things we take care of.
Agencies, outbound teams, anyone who sends cold email at volume: MailSequoia keeps the inboxes behind your campaigns trusted, and shows you exactly where your email lands.
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Human-grade engagement
Your email is opened and handled the way people handle mail they actually want. That is the signal inbox providers reward.
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A private warm-up pool
Our warm-up pool is ours alone. It is not a swap network where strangers' inboxes trade mail with yours.
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Your copy, your voice
Warm-up email is written the way you write, so the reputation you build belongs to the email you really send.
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Placement you can see
Every inbox gets a placement read, day by day: inbox or spam. You know which senders are ready, and which need time.
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Google Workspace and Microsoft 365
Connect inboxes on either, one at a time or a whole list at once, in a few minutes.
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Nothing changes in your campaigns
Keep your sending tool, your lists and your sequences. The warm-up runs beside them and never touches your prospects.
Every inbox wears its own tag.
No averages that hide a bad sender. Each inbox has its own record with us, the way each tree in a grove wears its own tag.
You see how every inbox is warming, where its email lands, and when it is ready to carry real campaigns.
Up and growing in four steps.
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Request an invite
Tell us how you use cold email and how many inboxes you run. MailSequoia is invite only, and places are limited.
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Connect your inboxes
Once you are in, bring your Google Workspace and Microsoft 365 inboxes across in a few minutes.
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Add your copy
Give us a few emails in your own voice. We review them and put them to work.
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Watch them grow
Your inboxes warm a day at a time, and every day's placement is recorded for you.
A core sample of your reputation.
Foresters read a tree's history from a thin core of wood: wide bands for good years, narrow ones for lean years.
Your placement history reads the same way. One band for each day, so a strong week, a dip and the recovery after it are all easy to see.
Short rules, kept.
A warm inbox is only worth having if the email it sends can be trusted. Everyone we accept agrees to the same few rules.
- Follow the CAN-SPAM Act and any other law that applies to your email.
- Say truthfully who is sending, and what the email is about.
- When someone opts out, stop emailing them promptly.
- Take addresses that no longer work off your lists.
- Send nothing deceptive and nothing illegal.
Put down roots.
MailSequoia is invite only, and we open a small number of places at a time. Request an invite with a few details about your sending and join the waitlist. Every request is read by our team.
