What is Sendwise Cold Email Machine?

Sendwise is a local-first cold email application built by BotNerva Technologies. It combines contact import, campaign personalization, paced SMTP delivery, queue monitoring, unsubscribe handling, and suppression in one workspace.

Does Sendwise send real emails by default?

No. Sendwise starts in dry-run mode. Campaigns pass through the real queue and record delivery results, but no email leaves the device until SMTP delivery is explicitly configured.

Which delivery safeguards are built in?

The application includes daily sending caps, pacing delays, pause controls, sender identity fields, signed unsubscribe links, permanent suppression checks, test delivery, and optional open tracking.

How does Sendwise personalize a campaign?

Sendwise imports contact fields such as first name, company, role, and verified signal. Those fields can be used as merge variables and reviewed in a live recipient preview before the campaign starts.

Local-first Outreach App Updated June 2026

Sendwise. Cold Email Machine.

Name: Sendwise Cold Email Machine
Author: BotNerva Technologies

Sendwise is a local-first cold email application for importing relevant contacts, personalizing campaigns, pacing SMTP delivery, and enforcing unsubscribe and suppression rules from one workspace.

Build an Outreach Tool Back to Work

Sendwise overview dashboard with campaign metrics, activity, and dry-run delivery status.

Workflow

One clear path from contact to send.

Bring in the right contacts

Import CSV files or add contacts manually, normalize common fields, and prevent duplicate email records before a campaign begins.

Write with real context

Use company, role, first name, and verified signals as merge fields, then inspect the finished message in a live recipient preview.

Control every send

Set daily limits and pacing, start or pause campaigns, and watch processed, queued, opened, and failed counts from one view.

Keep safeguards attached

Dry-run mode is the default. Signed unsubscribe links, permanent suppression, sender details, and optional tracking stay part of delivery.

Inside Sendwise

The whole campaign stays visible.

Contacts, campaign state, personalized copy, and delivery configuration each have a distinct screen, without turning the workflow into a dense admin panel.

Sendwise contacts screen with CSV import, search, verified signal, and contact status. — Contacts

Sendwise campaign control screen showing pacing, queued recipients, and campaign status. — Campaign control

Sendwise campaign composer with merge fields and a live personalized email preview. — Live campaign preview

Sendwise settings screen with sender identity, delivery mode, and test email controls. — Sender and delivery settings

Under the Hood

Built to run locally before anything goes live.

The application starts in dry-run mode, where campaigns move through the real queue without sending email. SMTP is enabled only after sender details, a public application URL, and delivery credentials are configured.

Next.js and TypeScript application with a custom local server

Embedded SQLite storage for contacts, campaigns, queues, and suppression

Background worker for paced delivery that continues beyond dashboard refreshes

Generic authenticated SMTP support with a no-send dry-run mode

Signed unsubscribe routes and a suppression check before every delivery

Responsible delivery

Safe preview first. Explicit live sending second.

The product is intended for lawful, targeted business outreach using accurate sender information and verified contacts. It does not remove the operator's responsibility to follow privacy and anti-spam rules.

Clear Answers

What to know about Sendwise.

What is Sendwise Cold Email Machine?: Sendwise is a local-first cold email application built by BotNerva Technologies. It combines contact import, campaign personalization, paced SMTP delivery, queue monitoring, unsubscribe handling, and suppression in one workspace.
Does Sendwise send real emails by default?: No. Sendwise starts in dry-run mode. Campaigns pass through the real queue and record delivery results, but no email leaves the device until SMTP delivery is explicitly configured.
Which delivery safeguards are built in?: The application includes daily sending caps, pacing delays, pause controls, sender identity fields, signed unsubscribe links, permanent suppression checks, test delivery, and optional open tracking.
How does Sendwise personalize a campaign?: Sendwise imports contact fields such as first name, company, role, and verified signal. Those fields can be used as merge variables and reviewed in a live recipient preview before the campaign starts.

Need an outreach tool shaped around your process?

Bring the contact format, review steps, delivery rules, and reporting needs. The first useful version can stay focused.

Plan Your App Explore Services