61%
Sequence open rate
AI EMAIL OUTREACH & COLD SEQUENCES
Cold emails that read like personal ones
Boostly finds decision-makers, studies their digital footprint and writes true 1:1 emails — with a warmed domain, verified addresses and delivery through your HostUp SMTP.
8.4
Replies per 100 contacts
97.2%
Inbox placement
LIVE SIMULATOR
Deliverability simulator: build your setup
Flip the toggles and watch the inbox score move. On the right — a live preview of a 3-email sequence personalized for your lead.
Inbox score100
Excellent — emails fly to the InboxSequence preview
Open
54%
sequence open rate
Reply
18.7%
reply rate per 100 contacts
Bounce
<2%
bounce after verification
Inbox
97%
inbox placement
Decision-maker discovery & contact verification
The engine scans open sources — LinkedIn, company sites, WHOIS, conference talks — and collects up-to-date addresses of decision-makers. Every email passes SMTP validation, catch-all checks and spam-trap removal before a single send.
- Waterfall enrichment: 4 independent data providers in sequence
- SMTP + catch-all verification: sequence bounce-rate < 2%
- Role-account (info@, sales@) and spam-trap filtering
Dmitry Orlov
VP of Sales · Nordwind SaaS · 240 employees
Decision-maker found
d.orlov@nordwind.io
- ✓ Verified SMTP + catch-all✓ZeroBounce-style check•Passed
- Signals: 3 open SDR roles, Series B announcedinLinkedIn + Crunchbase•This week
Generated emailGPT-persona · 1:1
Subject: the Head of SDR vacancy — a scaling signal
“Dmitry, I noticed Nordwind opened three SDR roles this week — that usually means inbound flow can’t keep up. We help teams close that gap with organic outreach, no new hires. Open to a 12-minute call this week?”
why-now: hiring_signal · funding_roundspam-score 0.1
Digital-footprint hyper-personalization
Instead of a templated first line, Boostly analyzes the lead’s digital footprint: recent posts, interviews, hiring signals, product releases — and weaves a relevant “why now” hook into every email.
- “Why now” signals: hiring, funding round, stack migration
- Emails are assembled from research, not templates — 3 unique paragraphs
- Tone auto-rewritten to match the recipient’s seniority
Deliverability & domain warm-up
Full sender-reputation control: automatic SPF, DKIM and DMARC setup, a 14-day mailbox warm-up curve and pool rotation through your HostUp SMTP — emails land in Inbox, not Promotions.
- DNS audit: SPF / DKIM / DMARC with record auto-suggestions
- Mailbox warm-up: +12 emails/day with real peer replies
- HostUp SMTP integration — rotate up to 20 mailboxes per domain
DNS · boostly-mail.examplePASS
# auto-generated records TXT "v=spf1 include:hostup-smtp.io ~all" TXT "v=DKIM1; k=rsa; p=MIGfMA0GCSq…" TXT "v=DMARC1; p=quarantine; rua=mailto:dmarc@…" # warm-up curve, day 9 mailbox-07.hostup → 34 emails · inbox 97.2% · spam 0%
BENTO MECHANICS
Six loops hold deliverability
From decision-maker discovery to auto-stop on reply — everything runs as one system.
Decision-maker search
4-provider waterfall: LinkedIn, websites, WHOIS, talks. ICP scoring before any send.
Verification
SMTP handshake, catch-all checks, spam-trap removal. Bounce stays < 2%.
Domain warm-up
14-day curve: from 12 emails a day to full volume, with real peer replies.
Warm-up pool
Up to 20 mailboxes per domain via HostUp SMTP, sender and IP rotation.
Limits & jitter
40–60 emails per mailbox daily, random 4–12 min pauses, Gmail & Outlook limits respected.
Auto-stop & unsubscribe
Instant stop on reply, one-click unsubscribe, GDPR-safe mode.
Sequence anatomy
Every sequence — up to 6 touches with adaptive pauses and auto-stop on reply.
Day 0 · Email 1
Personal hook + audit offer
Day 2 · Email 2
Case study from a similar niche company
Day 5 · LinkedIn touch
Like + comment on their latest post
Day 8 · Email 3
Break-up: direct priority question
Where it converts best
Four scenarios where 1:1 cold sequences pay back fastest.
B2B SaaS
Pipeline from cold ICP accounts: sequences strike at hiring, funding and stack-migration moments.
Agencies
10+ clients on one domain pool, white-label reports, separate workspaces.
E-commerce & services
Win back churned B2B buyers, wholesale offers, dormant-base reactivation.
Consulting
Partner-level touches on behalf of the founder: 1:1 tone with a Cal.com slot in every email.
ENGINEERING DEEP DIVE
Why emails land: the engineering
Deliverability is engineering, not magic. Four loops below.
HostUp SMTP & IP rotation
Dedicated IP pools, reverse-DNS, gradual reputation ramp-up. Each domain gets its own pool of up to 20 mailboxes with automatic sender rotation.
Gmail & Outlook spam filters
We check SpamAssassin triggers, link/image balance and HTML/plain-text structure before sending. We keep email score < 0.5.
Exponential backoff
On soft-bounce 4xx we retry with exponential pauses: 15 min → 1 h → 4 h. Hard-bounce 5xx removes the address from the pool instantly.
Authentication & monitoring
SPF, DKIM, DMARC from p=quarantine to p=reject, BIMI logo, seed tests across 20+ providers and Gmail / Yahoo / Outlook Feedback Loops.
Boostly vs alternatives
An honest comparison across five criteria.
| Criterion | Boostly | Manual outreach | Spam databases | SDR team |
|---|---|---|---|---|
| Deliverability | Inbox 97%, bounce < 2% | Depends on skills | Spam, domain bans | High but expensive |
| Personalization | 1:1 from digital footprint | 1:1 but slow | None — bulk spam | 1:1, human factor |
| Time to launch | 1 day | Weeks of setup | Instant but risky | 2–3 months of hiring |
| Compliance | CAN-SPAM, GDPR-safe | All manual | Violations & fines | Depends on the team |
| Cost per touch | ~$0.04 | ~$0.30 of time | Cheap + bans | ~$2.50 |
“The very first 200-contact batch produced 11 replies and 3 demos. Boostly’s emails are indistinguishable from what our best SDR wrote — but a machine writes them in seconds.”
Frequently asked questions
Sequences follow B2B rules: relevant offer, identifiable sender, a working unsubscribe link in every email and instant opt-out processing. A GDPR-safe mode with legitimate-interest basis is available for the EU.
We recommend connecting HostUp SMTP — Boostly automatically sets up the records and warms a mailbox pool. Google Workspace and any custom SMTP are also supported.
A safe ceiling is 40–60 emails per mailbox per day after warm-up. With a pool of 10 mailboxes that’s up to 600 quality touches daily without reputation decay.
Nothing: sending runs from a subdomain (mail.yourdomain.com) and a separate mailbox pool. Corporate-mail reputation stays isolated, and a troubled pool is swapped within an hour.
We don’t bypass them — we respect them: 40–60 emails per mailbox daily, 4–12 min pause jitter, plain-text / light-HTML alternation, seed warm-up. Provider limits never trigger.
One-click List-Unsubscribe in every email, complaint handling via Gmail / Yahoo / Outlook Feedback Loops within minutes, auto-suppression list. Complaint rate stays < 0.1%.
Launch your first sequence today
Connect a domain, upload 200 contacts — first replies arrive within 72 hours. 3 days free, no card required.
Launch a sequence15-minute setup · HostUp SMTP includedInbox 97%