Add a domain. That is the whole setup.
No SMTP host, no port, no credentials, no ESP to connect. SenderSignal provisions a dedicated sending server for your domain, generates SPF, DKIM and return-path, and publishes them into your DNS if your registrar is connected. Then a plan-based ramp builds real engagement from a seed network until receivers trust your mail.
Four steps, in order, because order is the point.
Reputation is built on infrastructure first, authentication second, volume third, engagement throughout. Inbox Boost runs the whole sequence for you.
Your own sending server
The domain is registered on our sending infrastructure and, once authentication verifies, gets a dedicated sending server. You are never asked for an SMTP host, port, username, password or API key.
DNS, written for you
SPF, DKIM and return-path are generated and published straight into your zone through a connected Cloudflare, Name.com, GoDaddy or Dynadot account, merging into any SPF record you already have. DMARC stays your call because it needs a policy you choose.
Automated ramp
Daily volume grows on a plan-based schedule with natural day-to-day variation, inside your chosen sending window and timezone, weekdays-only if you prefer.
Real engagement
Messages land across a seed network and get opened, clicked and replied to, teaching receivers that your domain sends mail people want.
Automation with brakes, not just an accelerator.
Building reputation on a domain you care about needs guardrails. Every ramp runs inside limits you can see, and stops itself before a bad day becomes a bad month.
- Bounce guard, the ramp pauses automatically if bounce rate crosses a threshold
- Plan governance, hard caps on volume per tier, no runaway sending
- Monthly credits, usage is metered, so spend is predictable
- Sending window & timezone, sends happen when a human would send
- Natural variation, day-to-day jitter keeps the pattern from looking mechanical
Every part of the ramp, spelled out.
No black box: content, scale and measurement are all inspectable.
| Component | What it does | Notes |
|---|---|---|
| Content engine | AI-written emails matched to your business vertical | Rotated so sends don't look templated |
| Ramp scale | Entry schedules ramp to 250/day; top tier to 3, 000/day | Grows over the schedule, never all at once |
| Engagement | Seed network opens, clicks and replies to your mail | The signal receivers actually reward |
| Tracking | Real open/click tracking plus reply handling | Bot filtering for Apple & Gmail proxies, measured, not assumed |
Build reputation, then prove it's working.
Guided DNS setup
We write SPF, DKIM and return-path into your zone, not you.
Learn more FeatureInbox placement testing
See whether you land in Primary, Promotions or Spam across providers.
Learn more FeatureSender reputation
Google Postmaster reputation, spam rate and compliance in one view.
Learn morePick any day and see exactly what happens on it.
Volume, engagement, reputation and the bounce brake, day by day. Jump to day 1, 7, 14 or 28, or click any bar.
The score is rising fast now. Blacklist sources keep being rechecked underneath so nothing undoes it.
Engagement is recorded as counts of opens and clicks, which is what the product stores. Shape of a ramp, not a guaranteed result.
- Quick question about your Q2 planning
- Following up on the vendor shortlist
- Notes from the pricing review
Messages are written to match your business, rotated across variations so the sends do not look templated, and delivered into a seed network that opens and clicks them. That interaction is the history a cold domain has none of.
Inbox Boost, explained.
How fast does the volume ramp up?
What emails are actually sent?
Is the engagement real or simulated?
What happens if my bounce rate spikes?
Do I need my DNS records set up first?
How is usage metered?
Give your new domain a track record.
DNS verified, ramp scheduled, engagement real, start building reputation today.