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Modern Inbound

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Cold Email Agency for B2B Teams

We run cold email as a system: research, infrastructure, copy and sending, with the positive replies sent to you. Tested on your market in 90 days, then the system is yours if it works.

What a cold email agency should actually do

Most agencies sell a mailbox and a volume number. At the end of the day, the mailbox is the easy part. What actually moves reply rates is the research behind the send, the copy built on that research, and what happens to a reply once it lands.

01

Research

Every campaign starts from the buyer's own language: reviews, job postings, funding news and the phrases your best customers already use to describe the problem you solve. That research decides who gets emailed and what the email says before a line of copy is written.

02

Infrastructure, yours from day one

The 30 mailboxes and their domains are bought in your name from day one, set up on SPF, DKIM and DMARC and warmed up for 14 days before the first send. Emails go out unbranded. If the test works, there is nothing to move: the mailboxes and domains are already yours.

03

Copy from buyer language

Subject lines and body copy come straight out of the research phase: the exact complaint a reviewer left about a competitor, the exact line a founder used on a podcast. Copy that mirrors how the buyer already talks reads as relevant rather than as a pitch.

04

Positive replies, sent to you

We send you the positive replies, each with the full thread and a one-tap reply. The rest are cleared out so the list stays clean and sender reputation stays intact.

How the test runs

01

Day 0: payment, mailboxes and domains bought in your name

You pay and fill in a short onboarding form about your offer and your market. The 30 mailboxes and their domains are bought in your name, at your cost, paid to the provider: $99 a month for the mailboxes and $130 for the domains.

02

Day 14: sending starts

The mailboxes warm up for 14 days. Sending starts after that, and the 90 days start with the first send. We keep writing and testing new angles, 100+ in all, as the replies come in.

03

As replies land: introductions

Each warm lead is sent to you as an introduction, with the full thread. You take the conversation from there.

04

At 5 to 20 warm leads, or 90 days from the first send: the verdict

The test stops at whichever comes first, and you get a written verdict on whether your offer works cold.

Running into a specific market changes the research and the send times more than it changes the mechanics. See how this plays out for teams selling into India or the United States.

Test the offer first, then make it yours.

₹1,99,000 + GST, plus the mailboxes and domains, bought in your name, buys a Message-Market Fit Test: 100+ messaging angles tested on your market from 30 mailboxes and their domains, unbranded, with up to 20 warm leads included in India, 10 outside India and 5 for the US only, stopping at that number or 90 days from the first send. The mailboxes cost $99 a month and the domains $130, paid to the provider.

Measured results

208

Leads delivered

A gifting company found a vertical nobody had sold to.

Sells curated hampers to companies from startups to listed enterprises. Buyers sit across HR, admin and procurement; their own outreach reached one at a time and went quiet between festivals.

Corporate gifting · India · April to September 2026

181

Leads delivered

An office snacks founder stopped being the sales team.

A Bengaluru brand selling pantry boxes and festival hampers to offices. Every account came from the founder's personal introductions, and the pipeline emptied whenever she was busy delivering.

Office snacks and gifting · Bengaluru, India · April to September 2026

141

Leads delivered

An affiliate AI platform walked into its biggest conference fully booked.

A US software company using AI to run affiliate programmes for publishers and brands, run fully white-label. Their buyers cluster around a few conferences a year, so the calendar had to fill before each show.

Affiliate marketing AI platform · United States, white-label · May to August 2026

49

Leads delivered

An offshore accounting firm cracked the US owner inbox.

An India-based firm providing controllers, bookkeepers and month-end close to US companies. US owners do not reply to outsourced-accounting pitches; the message had to land the moment a controller quits or a CFO is drowning in close.

Offshore accounting and bookkeeping · India, serving US businesses · April to September 2026

All case studies

Who this is for

This works well for

  • B2B companies selling to buyers who read email before they take a call.
  • Teams with a proven offer and at least one reference client or clear ROI story to point to.
  • Founders or sales leaders who want pipeline they can forecast month over month.
  • Companies willing to let research and data drive targeting, even when it narrows the list.

This is not the right fit for

  • Pre-product companies still validating whether anyone will buy what they are building.
  • Teams that need meetings booked by phone. This system is async and email-first.
  • Businesses selling a low-value, one-time purchase where a 90 day outreach install cannot pay for itself.
  • Anyone expecting high volume with no research behind it. We would rather target fewer accounts with real relevance than blast a large list.

Looking for a broader pipeline motion beyond email, including LinkedIn and calling layers? See our lead generation agency service. For the reasoning behind how we build campaigns, our blog covers the research and copy methodology in detail.

Questions

What does a cold email agency actually deliver?

A complete system: buyer-language research, mailbox infrastructure you own, copy drafted from that research, and every reply triaged before it reaches you. The output is a qualified positive reply, ready for you to continue the conversation.

How much does a cold email agency cost?

Modern Inbound charges ₹1,99,000 plus GST for a Message-Market Fit Test. We test 100+ messaging angles on your market from 30 mailboxes and their domains, bought in your name, unbranded, with up to 20 warm leads included in India, 10 outside India and 5 for the US only, and stop at that number or 90 days from the first send, whichever comes first. The mailboxes and domains cost extra, paid to the provider: $99 a month for the mailboxes and $130 for the domains.

How fast does a new campaign start producing replies?

The mailboxes and domains are bought in your name when you pay, and the mailboxes warm up for 14 days. Sending starts after that, and the 90 days start with the first send. The test stops at your market's included warm leads (up to 20) or 90 days from the first send, whichever comes first.

Is there any calling involved in delivery?

No. Delivery is fully async: research, email, and the positive replies sent to you. We confirm fit and scope before anything is paid.

What counts as a positive reply?

A prospect who responds with genuine interest. Auto-replies, out-of-office messages and polite declines do not count. It is not a booked meeting: you take it from there, which keeps the incentive tied to real interest rather than volume.

Let’s chat about your sales pipeline goals.