Decipher OSLog inDecipher OS personalizes from a sheet and sends through your own Gmail - scheduled to each recipient's timezone, with replies and follow-ups handled for you.
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1,284
12%
41%
0.4%
Q2 partner outreach
sentInvestor update - warm list
scheduledDesign agencies - cold
draftPersonal sending, smart scheduling, and reply tracking - without leaving your own Gmail and Google Sheets.
Sent from your own inbox
Every message goes out through your real Gmail, so it reads as a personal note and lands in the inbox - not a promotions tab. No third-party sending domains.
Sheet-native
Your Google Sheet is the source of truth. Pick a tab and columns and go - no CSV exports or imports.
Smart drip scheduling
Send in business hours, in each recipient's own timezone, with daily caps and warm-up built in.
Reply-aware follow-ups
Track replies and bounces, run multi-step sequences, and automatically stop following up the moment a recipient responds.
No setup project. Sign in and you are running a campaign in minutes.
Connect a sheet
Sign in, point Decipher OS at any Google Sheet, and pick the tab and columns to personalize with.
Write once, personalize all
Compose your subject and body with {{placeholders}}. Add A/B variants and multi-step follow-ups when you need them.
Send from your inbox
Emails drip out through your own Gmail on schedule, in each recipient's timezone, and stop when they reply.
Connect a sheet, write once, and send from the inbox your recipients already trust.
Get started