Skip to main content
Tantra

Cold Email Sent From Your Own Workspace Mailboxes

Every message leaves the Google Workspace address your prospect would reply to. Your team controls the caps, the sending window and the steps.

Trusted by operators behind 250+ brands

LeapworkCavli WirelessCoinfirmAppsterBureau Works91springboardDataGuardMerkle ScienceWowMakersiBoson Innovations

Sending Infrastructure Your Team Controls

Per-Mailbox Caps and Sending Windows

Your Workspace admin connects Tantra once, then each mailbox gets its own daily and hourly cap (50 and 25 by default). Emails wait for the sending window in each recipient's time zone, and no send can exceed a mailbox cap.

Sender ID Performance Comparison
Compare performance across all sender IDs
Showing 1-5 of 12 sender IDsPage 1 of 3
Sender IDSentYesAccept rate
145040.7%
142037.3%
132040.9%
132040.2%
126041.3%

Follow-Ups That Stop on Reply

Add as many follow-up steps as the sequence requires, each with its own delay. When a reply is detected, Tantra stops the sequence for that contact and routes the thread to your inbox with its intent classified.

Step 1Email · Send emailSends immediately
Subject
VR onboarding at {{company}}
Body preview

Hi {{firstName}}, saw {{company}} is scaling field operations this year. Teams like yours cut onboarding time 40% by moving hands-on training into VR. Worth a 20-min look? Thanks, {{senderFirstName}}

AI personalization enabled
Step 2LinkedIn · Visit profileWaits 1 day

Profile visit: no message content.

Step 3LinkedIn · Connection requestWaits 1 day
Connection note

Hi {{firstName}}, sent you a note about VR training at {{company}}. Would love to connect.

Step 4Email · Send emailWaits 3 days
Subject
Re: VR onboarding at {{company}}
Body preview

Quick bump, {{firstName}}: happy to share the 3-min demo loop our aerospace customers use for onboarding. Useful?

Step 5Email · Send emailWaits 4 days
Subject
Re: VR onboarding at {{company}}
Body preview

Closing the loop, {{firstName}}. If training capacity comes up for {{company}} next quarter, this is the fastest path to a pilot. Door stays open.

Mailbox Warmup and Domain Checks

Warmup exchanges mail between your own connected mailboxes, starting at 5 emails a day and rising gradually. A daily check reports SPF, DKIM, DMARC, MX and blocklist status for each sending domain, scored out of 100.

Mailbox warmupIllustrative
Peer exchange between your own mailboxes
Default target 100/day050100Day 0Day 30Day 57
Starts at 5/day+5 every 3 daysNeeds 2+ mailboxes

Step-Level Reporting

Sent, replied, bounced and unsubscribed, reported per step and per campaign, so underperforming follow-ups are easy to identify.

app.usetantra.com
Campaign NameStatusSentReplied
Scaling XR Training: Webinar Invites
Completed
0
0
EU SaaS Founders: Warm Intro
Active
0
0
Enterprise VR Pilot: Q3 Outbound
Active
0
0
US Growth Leaders: LinkedIn First
Active
0
0
Dormant Trials: Re-engagement
Completed
0
0

CRM and Form Leads, Enrolled by Webhook

New

Send leads from your CRM or website forms to a sequence by webhook, or add them from your own code through the API. Each one enters step one automatically, with no CSV upload.

Explore Prospect Intake

Frequently Asked Questions

Can't find the answer here? Check the help center.

Run Outreach From One Platform

Every channel your team uses, in one ordered sequence, with every reply in one inbox.

Pro includes a 14-day free trial.