The sending layer for cold email
Send from your own inboxes and see the raw SMTP reply behind every send. No made-up health score.
Works with Google Workspace · SMTP · IMAP · your own inboxes
We store what Google actually replied on every send, and the real reason behind every bounce.
Queued by the receiving server.
Throttled. Your earliest warning, before a bounce.
Bad address or blocked, told apart by DSN code.
The difference
A bounce that means your data is wrong, told apart from one that means your reputation is slipping. Same number, opposite fix.

How it works
Your own Google Workspace, over SMTP and IMAP.
Steps, delays, A/B variants, CSV variables.
Any size. Duplicates and dead domains dropped.
Paced, rotated, capped. It stops the moment they reply.
What is inside
Rotation, daily caps, ramp-up, human-random gaps.
Multi-step, A/B that favours the winner, threaded follow-ups.
Raw SMTP on every send, bounces classified by cause.
IMAP tells real replies from bounces, then stops the sequence.
One-click unsubscribe, auto-blocklist, a bounce-rate guard.
An API behind every screen. Your workspace, isolated.
What it does not do
Each is its own craft. We do sending properly and expect you to bring the rest. See how we compare.
Connect an inbox, write a sequence, let it work the list at a pace that keeps you out of spam.