Asterlo
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Personalized outreach, never a spam blast.

Enter your website and who you want to reach: a name and their company. Asterlo researches both, asks you to confirm the facts, writes six emails that each stand on their own, and opens each one you approve in your own Gmail, ready to send.

Your first email is free and needs no sign-in. Nothing is read until you ask. See a real example

Free credit when you add a cardthen pay per contactor a monthly planSee prices

  • Sourced factsA source, or marked as yours
  • You confirm firstNothing written from guesses
  • Six anglesEach email stands alone
  • Your GmailSent only on your click

One contact, start to Gmail

Who does what, at every step.

Green is Asterlo doing the legwork. Amber is you deciding. Move across the grid, or pick a step.

Step 01 · Asterlo · about a minute

Reads your website.

It reads your own site and drafts what you sell and to whom. You see every page it used.

Selling to households instead?

A business (B2B) example, researched and written by Asterlo

See exactly what Asterlo wrote.

Asterlo read Campfire’s public pages and wrote six emails to its head of marketing. Every word is as it wrote them. Point at a highlighted phrase to see its source, or pick a source to see where it was used, then open the page to check it yourself.

To the head of marketing · CampfireAs written
Sourced outreach drafts

Hi,

Campfire's $65M Series B, announced Oct 15, 20251, is the reason I'm writing to someone in marketing leadership.

Asterlo researches a buyer and their company from public pages, keeps a source beside each fact, and drafts six standalone emails once you confirm the facts. Only the ones you approve go out, from your own Gmail, one click each. There is no bulk send, and you decide what goes out.

When your team writes outreach to a new prospect, how do you check the facts in it before it goes out?

Kind regards,

Linhua ZhouCo-founder, Asterloasterlo.io
  1. Retrieved
  2. Retrieved
  3. Retrieved
  4. Retrieved
Pages read
12
Research and writing
About 2 minutes
Edited by hand
Nothing

Written for this page to a role rather than a named person, so it went straight from research to writing. In your workspace you confirm the facts before anything is written.

For businesses · six emails

Six angles, each able to stand alone.

A guide, not a script. When there is no proof for an angle, Asterlo picks another supported one instead of padding.

  1. 01

    Relevance

    Why the offer could matter to this buyer, from a confirmed fact.

  2. 02

    Perspective

    A grounded implication or trade-off worth thinking about.

  3. 03

    Application

    A concrete use case your product actually supports.

  4. 04

    Credibility

    Proof you supplied, or a clear mechanism. Never an invented case study.

  5. 05

    Team fit

    A practical way to judge whether it suits how their team works.

  6. 06

    Priority

    A neutral question about relevance or timing. No breakup lines.

Designed around judgment

Automate the legwork. Keep the decisions.

Asterlo handles

Research and first drafts

  • Read your site, the web and the profiles you give it
  • Keep a source beside every fact
  • Write six emails, or one per audience, within your rules
  • Stop when you ask, saving nothing from a stopped run
You own

Facts, words and the send

  • Confirm the company and buyer facts
  • Approve each exact version, or edit it
  • Press Send in your own Gmail, when you choose
  • Decide who you have permission to contact

Monthly plans · or pay as you go

Pay for the work, not the seat.

Tell us how many people you want to reach. We’ll compare plans with pay as you go.

40 contacts a month

Lowest estimated upfront cost for 40 contacts: $69 with Starter. That’s the $49/month plan with $60 of credit, plus $20 in added funds. Pay as you go would need at least $80 in added funds. Free credit or an existing balance could lower this.

Every plan includes

  • Buyer research with sources
  • Six-email sequences in your voice
  • Market segments & company shortlists
  • Send from your own Gmail
  • Imports, manual editing & failed-run retries free
  • Research that fails isn’t charged
  • Top up any time, added funds never expire
  • Change or cancel from Billing
  • Stripe receipts for every payment
  • A contact $2
  • Top up from $20
  • Company research $1
  • Company shortlist $1
  • Market segments $1
  • Find people, a person $0.20
  • Consumer audience $2
  • Consumer draft $0.05
Compare plans Sending, manual editing, imports and retries of failed runs are included. AI rewrites and repeat research of a person are charged after the included ones. Prices in US dollars.

Questions

Plain answers.

How we handle your data

Will Asterlo turn me into a spammer?

It can’t. Asterlo sends nothing itself: it writes for one person or one audience from facts you confirmed, opens each email you approve in your own Gmail, and you press Send there. A delivery check flags shortened links, images, tracking pixels and shouting capitals, and a pace guide keeps your daily volume sensible. Consumer email needs permission, your business identity and an unsubscribe line; anyone who uses that link is stopped automatically. Asterlo never reads your inbox, so when someone replies or asks to stop, mark it on the contact and Asterlo stops further outreach to them.

Where do the facts come from?

Your own website, the buyer’s company website, public web pages and anything you add yourself, such as notes you paste. You can add a buyer’s LinkedIn link to help find the right person; Asterlo never reads LinkedIn. Each fact keeps its source, and what you add is labelled as provided by you.

Does Asterlo send email for me?

No. When you approve an email, Asterlo opens it in your own Gmail with everything filled in, and you press Send there. Nothing is sent on a schedule or behind your back; you decide when, and whether, each one goes.

What access to Gmail does it ask for?

None. Asterlo never reads, sends or drafts email in your mailbox. You can optionally let it see when your calendar is busy, so booking a meeting greys out those times; it never sees what the events are. The details are in Google data use.

What if a fact is wrong?

Fix it before anything is written, or stop the research. A stopped run saves nothing, and your correction is kept and labelled as provided by you.

How is it different for consumer brands?

Instead of one buyer, Asterlo researches audiences from aggregate evidence, never guesses about individuals, and writes one message per audience for contacts you have permission to email, with your business identity and an unsubscribe line.

How do I reach the founders?

Email lincoln@asterlo.io for anything technical, or isaac@asterlo.io for anything else; either of us can help. Prefer to talk? Book a Google Meet call.

Talk to the founders.

We build Asterlo for you, and we read every email. Write to either of us about anything, or pick a time to talk.

  • Linhua Zhou Co-founder · Engineering

    Technical issues, Gmail sending, research runs and anything that looks broken.

    lincoln@asterlo.ioGmail

  • Isaac George Co-founder · Market

    Getting started, partnerships and how Asterlo fits your outreach.

    isaac@asterlo.ioGmail

Book a call

Google Meet · 30 minutes

  • Every day, weekends included9:00–5:00 New York time, shown in your own time zone
  • Book at least 12 hours aheadUp to 60 days out
  • Invite sent straight awayGoogle emails the Meet link when you book
Choose a time on Google Calendar

Opens Google's booking page in a new tab.

Get started

Start with one message worth sending.

Built to help small B2B teams spend less time researching prospects and writing outreach. Asterlo prepares sourced research and draft emails for the prospects you choose, and you review and edit them before anything reaches Gmail.

Built to help small consumer brands spend less time researching audiences and writing email. Asterlo prepares sourced audience research and draft emails for the audiences you choose, for contacts you have permission to email, and you review and edit them before anything reaches Gmail.

Open your workspaceSee how it works