How Expensive is Email Outreach?

For some reason, ten thousand is the number I hear most often in relation to email outreach.

As in, it is common for people new to the channel to set a strategic goal of emailing 10,000 recipients—ideally by the end of next month.

I don't know why, but I know it's not a good goal if you're just starting.

It's not realistic for most people to reach that volume quickly. It's not tied to replies—the metric that actually determines whether email is working for you. And most importantly, you should first understand what it would cost to get there.

So let's start with cost. Then let's talk about why the number itself might be the wrong thing to optimize for.

What goes into the cost of email outreach?

To run email outreach, you need three things:

• Verified leads — real, deliverable email addresses for the people you want to reach
• A sending tool — a sequencing tool that handles personalization, follow-ups, automating the sending process
• Email accounts on dedicated domains — to send from

With a platform like Hunter, the first two are bundled into a single subscription. Hunter finds and verifies professional email addresses, and its built-in Sequences tool lets you send personalized multi-step campaigns directly from the platform. Even the Free plan includes 50 verified leads and one connected sending account at $0 per month.

(Most competitors in the space only let you test their sending tools for two weeks before requiring a paid plan.)

But there's a constraint you can't get around for free: to send more than a handful of emails per day without damaging your deliverability, you need multiple sending accounts on separate domains. And those cost money—you shouldn't use freemail accounts like @gmail.com because freemail accounts don't work as well as custom ones for email outreach.

How many email accounts do you actually need?

The math seems straightforward—until you dig into the details.

Hunter’s State of Email Outreach report shows the optimal number of emails to send per day from a single email account is between 20 and 50. If you play it safe at 20 per day on business days only, one account can handle about 400 emails per month. Want to contact 10,000 people? With a single account, you're looking at 25 months.

The obvious move is to add more email accounts. With 10 accounts each sending 20 emails per day, you'd reach about 4,000 people per month—so roughly 2.5 months to hit 10,000. That sounds manageable.

But here's where it gets tricky

You also need to follow up. Our data says one or two follow-ups is optimal for getting replies (send more, and you’ll annoy your recipients, resulting in spam complaints). 

Every follow-up counts toward your total sending volume, regardless of whether it's the initial email or a nudge. If you follow up twice, that's a 3x multiplier on the total number of emails you need to send—which means you either need more accounts or more time than you initially calculated.

On top of that, you'll want those accounts spread across multiple dedicated domains, not all sitting on one. If a domain gets flagged for spam, you want it to affect one slice of your setup—not the whole thing.

How much do email domains cost?

Every sending account should sit on a dedicated domain—not your company's primary domain. If a sending domain gets flagged for spam, your main business email stays unaffected.

A .com domain typically costs $10–$20 per year from registrars like Namecheap, GoDaddy, or Cloudflare.

For a typical setup with 3–5 dedicated domains, that's $30–$100 per year. Even at 10 domains, you're at $100–$200/year.

How much do email accounts cost?

This is where the real ongoing cost of email outreach lives, especially if you only optimize for scale.

You need a professional email hosting provider for each sending account. We recommend either Google Workspace or Microsoft 365. These are the two providers universally recommended for outreach because emails sent from Gmail and Outlook infrastructure have better deliverability than those sent from lesser-known providers.

Google Workspace

Business Starter is all you need for a sending account. Annual plan prices as of March 2026:

Source: Google Workspace

Microsoft 365

Business Basic costs $6.00/user/month on an annual plan. Microsoft has announced this will increase to $7.00/user/month from July 1, 2026—a 16% rise attributed to the inclusion of AI features including Copilot Chat.

Microsoft 365 pricing is more uniform globally at $6.00/user/month, making it slightly cheaper than Google Workspace in most markets until July 2026, when both will be at $7.00/user/month.

One caveat on Google Workspace: regional prices are enforced based on where the majority of your users actually access the service. You can't register under one country's pricing and use the accounts from another—Google monitors this and may suspend accounts that don't match.

Buying from resellers vs. buying direct

You don't have to pay list price for these sending accounts.

Authorized resellers offer Google Workspace accounts for as low as $2.50–$4/user/month—a 40–70% discount compared to Google's direct price. The lowest price point is only for those who need massive scale (e.g., 200 email accounts). Many also bundle services relevant to outreach: automated DNS and SPF/DKIM configuration, domain setup, and deliverability guidance.

The trade-off is reliability. If the reseller has service issues or shuts down, your accounts could be disrupted. With a direct subscription, you have a relationship with Google or Microsoft. For most small teams, buying direct is simpler. For agencies running dozens or hundreds of accounts, resellers start making financial sense.

Regardless, you need to do your due diligence when getting accounts from resellers. Deliverability and reliability of the service varies—and service cost plays a big part here.

A note on warming up new accounts

We haven't mentioned email warmup yet, and it's worth addressing. Warmup services typically create artificial email traffic—a pool of accounts sending and replying to each other—to simulate engagement and build sender reputation on new accounts before you start real outreach.

We don't recommend any specific artificial warm-up service as we haven't seen this approach work in our own campaigns.

Instead, we recommend a simpler approach: start sending real emails at a lower volume than 20/day—maybe 5–10 per day—and gradually increase over the course of a few weeks. If your open rates, reply rates, and bounce rates look healthy after about a month, you can move up to 20, then 30, then 50 emails per day per account. This builds reputation on real engagement rather than artificial signals, and it gives you early data on whether your messaging is working before you've committed to higher volume

Putting all email outreach costs together

Let's work through the scenario everyone asks about: contacting 10,000 people per month with two follow-ups each. That's 30,000 emails per month in total sending volume. At 20 emails per day per account across business days, you need roughly 75 sending accounts spread across 10–15 domains.

Rough monthly cost breakdown:

That's a meaningful monthly expense. It's also before accounting for the fact that managing 75+ sending accounts, monitoring deliverability across that many domains, and maintaining sender reputation at that scale requires real operational overhead—not just the software and infrastructure costs.

Which raises the actual question: should 10,000 be the goal in the first place?

Why setting a volume target first is backwards

When someone says "I want to contact 10,000 people by the end of the month," they're assuming more contacts means more results. In a crude sense, that's true. But this framing skips the metric that determines whether email outreach is actually working: your positive reply rate.

Industry benchmarks put overall reply rates at around 4–5%. But the majority of replies are negative—"not interested," "please remove me," "wrong person." Positive replies—people who express interest, ask a question, or agree to a meeting—typically land at 1–4% of people contacted. A 2–4% positive reply rate is excellent. A solid one is 1–2%.

Here's what that means concretely. Contact 10,000 people at a 2% positive reply rate: 200 interested prospects. That sounds great—until you realize you've spent several hundred dollars on infrastructure, burned through a large portion of your addressable market, and used a ton of credits to find the verified contacts. If your messaging was off or you targeted the wrong segment, most of that spend was wasted on leads you can't re-approach.

Now consider contacting 500 people with targeted messaging aimed at a specific segment. A 3% positive reply rate gives you 15 interested prospects from a fraction of the investment. More importantly, you now have signal: this message works with this audience at this rate. You can decide whether to scale up, adjust, or pivot—before you've depleted your market.

Email outreach rewards testing over volume

Email outreach is not a broadcast channel. It's not like ads or newsletters. It's one-to-one communication that mimics a personal email. The relationships it creates are built on relevance, timing, and personalization—not reach. That has specific implications:

Your addressable market is finite. Unlike ad impressions, once you've emailed someone and they haven't replied or replied negatively, that lead is largely spent. You can't re-pitch them next month. Every campaign depletes the pool.

Reputation compounds. Every email affects your sender reputation. High bounce rates, spam complaints, and low engagement make future campaigns harder to deliver. Blasting volume before validating your messaging is a reliable way to damage your reputation before you've found what works.

The best-performing segment may not match your ICP exactly. Email outreach reaches people unsolicited in their inbox during their workday. Who responds well to that isn't always a mirror of your ideal customer profile as your product team defines it. It's the subset of your ICP that's receptive to this specific channel—maybe companies at a certain stage that don't have an established vendor, or people in roles actively evaluating solutions. You won't know until you test.

Personalization quality degrades with volume—and the threshold is lower than you think. Our data shows that campaigns sent to fewer than 50 recipients consistently outperform larger ones. At that scale, you can build emails around a genuinely shared context: the same type of problem, the same industry constraint. You know enough about this specific group to make your offer actually relevant to them—not just addressed to them.

At 10,000 contacts in a single campaign, you're almost certainly relying on surface-level personalization: first name, company name, maybe job title. That's not contextualization—it's mail merge. It's useful, but it doesn't replace relevance. A group of 10,000 people doesn't share the same set of problems, doesn't use your product the same way, and wouldn't respond to the same pitch. The offer can't be tailored because the audience isn't actually a coherent group. The result is a blended mediocre reply rate across thousands of people who received a message that was only a little bit relevant to each of them.

Start small, find what works, then scale

Phase 1: Test across 2–3 segments. Pick 2–3 distinct market segments. Craft a targeted sequence for each. Contact 200–500 people per segment using different versions of your pitch. Track positive reply rates.

Phase 2: Identify the best-performing segment. Maybe SaaS companies with 50–200 employees respond at 3%, while e-commerce companies with 500+ employees respond at 0.5%. Now you know where to focus.

Phase 3: Scale something that works. Once you've found a segment-and-message combination that produces a positive reply rate you're satisfied with, then set a monthly volume target. If you get 2.5% positive replies from mid-market SaaS companies and want 25 interested prospects per month, you need to contact about 1,000 people. That's a goal grounded in data.

Estimate your market before you start

Before outreach, you should know how large your addressable market actually is. If your total addressable market is 5,000 companies, contacting 10,000 people in a month isn't just aggressive—it's impossible.

Hunter Discover lets you search and filter companies by industry, size, location, technology stack, and more—for free, without spending credits. You can build company lists and estimate how many companies match your criteria before you commit any budget.

Hunter's TAM Calculator is also free and doesn't even require a free account. Enter your criteria, and it estimates your total addressable market from Hunter's database. This gives you a realistic ceiling for your outreach, and helps you plan accordingly.

Where to start

Hunter Starter at €34/month (annual) or €49/month (monthly) gives you 2,000 credits per month (24,000 credits accessible today if you go with annual billing), 3 connected sending accounts, and Sequences with automated follow-ups.

Pair that with 3 Google Workspace or Microsoft 365 accounts on 1–2 dedicated domains. Total cost: roughly $55–75/month all-in.

Use those 2,000 credits to test 3–4 segments at 500 contacts each. Run your campaigns. Measure your positive reply rate.

Only once you know that rate should you set a contacts-per-month goal—derived from the outcome you want (X interested prospects), divided by the rate at which your outreach produces them.

That's a plan. "Contact 10,000 people by end of month" is a wish with a deadline.