Sales Email vs. Cold Call: When to Use Each According to Data

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Jeff Hoffman
Jeff Hoffman


Productively making first contact with a prospect is a delicate art for sales reps. You never get a second chance at a first impression, and you want to do everything in your power to ensure your outreach registers with potential customers.

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The method of outreach sales reps use for a first connect makes a significant difference in response rates. Rather than deciding whether to call a new prospect or send an email based on personal preference, use the method your prospect will be most responsive to.

Let’s break down some of the key differences between a cold call and a cold email.

Cold calls can be more personal.

A cold call can be more personal than a cold email. It can garner an immediate response and lets you deal with a prospect saying "no" right away. Cold calls are also more dynamic than cold emails because they allow you to adjust your strategy to fit a prospect's needs as your conversation with them progresses.

Calling prospects out of the blue can be invasive.

That being said, leveraging cold calls does have some downsides. Cold calls, by nature, are intrusive. People often aren't receptive to receiving them consistently, and many will get frustrated when you use one to reach them.

On top of that, you, yourself, might get frustrated and impatient if the call isn't going smoothly. They're also more expensive and less efficient than sales emails. And if you're constantly inundating prospects with obtrusive cold calls, your company's reputation can take a hit.

Cold emails are easier to scale.

Cold emails lend themselves to a different approach to prospecting. They're cheaper and more efficient, making them more scalable. In the time it would take to make a single cold call, you could send several cold emails.

You can also attach more visually appealing and informative content to a cold email — better capturing figures and concepts that might be harder to convey over the phone.

Cold emails can be easier to distribute and track.

A cold email is also less intrusive than a cold call, so prospects might be a bit more polite in response to one — even if they're saying "no." That might not seem like much, but it can be a big help to morale long term. They can also be automated, tracked, and forwarded — making them easier to distribute and keep tabs on.

Emails are easier for prospects to ignore.

The main risk you run with cold emails is being ignored. Prospects can be inundated with dozens of cold emails every day. The competition is stiff and abundant. In many cases, cold emails get blocked, go unopened, or are flat-out deleted. And if one is compelling enough to generate a response, there's no telling when it will come.

Whether you contact a prospect via phone or email, if you’re conducting cold outreach all communication needs to be handled with care. Make sure you carefully vet new contacts to see if they’re a viable candidate for your offer and be mindful of any boundaries they establish.

All this begs the question: Phone or email? When deciding between trying a prospect by phone or sending an email, let the following factors be your guide.

How to Decide Between Emailing & Calling

1. Time and Day of the Week

First, consult a calendar and a clock. Statistically, phone connect rates rise as the day progresses, and as the week progresses. In other words, a person is more likely to answer their phone later in the workday and workweek.

That said, I like to reserve 3 p.m. and later of the prospect’s local time as my prime calling hours. The same goes for Thursdays and Fridays — I block out large chunks of time on these days for cold calling.

But what if a prospect doesn’t pick up their phone in these timeframes? In that case, leave a voicemail. Response rates to voicemails also increase later in the day since checking phone messages is something people often do before heading home for the evening. Calling late is a win-win.

On the other hand, the ideal time span in which to send email is shorter but more frequent. While I draft connect emails throughout the day, I am careful to send them either 10 minutes before the hour or 10 minutes after the hour.

These brief windows correspond with people leaving or going to meetings. What do they do with the few minutes they have to kill? Scroll through email on their smartphones. If you sync your email to be sent with the time your buyer is most likely to check their inbox, your message will pop up on top instead of being buried beneath others.

2. The Ask

What’s your objective for this first outreach? To set up a meeting? Get some more information? Receive a referral? Figuring out your ask and categorizing it as “weak” or “strong” will help you determine whether to call or email.

Strong asks require commitment from the prospect to do something. I would label requests for meetings, conference calls, or product trials as strong closes. Weak asks seek straightforward information from the buyer — think a prompt for feedback or a referral.

Once you know you're close and have determined if it’s strong or weak, it’s easy to choose between a call or an email. If you’re putting forth a strong close, pick up the phone. Since these asks require more from the prospect, salespeople need to employ their closing skills to secure a "yes." And it’s far easier to persuade on a phone call — when a rep can respond to and smooth over objections in real-time.

But if the ask is weak, draft an email. Don’t take up the prospect’s time on the phone unnecessarily if your request can be fulfilled with a few short lines of text.

It’s interesting to note that most salespeople take the opposite approach — they ask buyers for meetings through emails and reserve simple questions for calls. Why? Because they’re afraid of being rejected on a strong ask over the phone.

Don’t let fear block you from connecting with a buyer. Reverse this equation and watch your response rates climb.

3. The Level of the Prospect

Do individual contributors have assistants? Not usually. But do C-level executives? Almost always.

That’s why the higher up your prospect is in an organization, the more likely you are to reach a live person when you call. Since a live conversation with anyone — regardless of whether they’re the person you were trying to reach or not — trumps an email exchange, lean on the phone with buyers at the management level or above. Also, higher-level prospects are generally more comfortable on the phone, and less intimidated by sales calls.

But if individual contributors don’t answer their phones, no one else is going to pick up — and they’re not likely to return a call from an unknown number. In addition, lower-level professionals are often away from their desks — traveling, working in groups, participating in meetings, and so on. Therefore, a rep is much more likely to connect with a prospect at this level through an asynchronous channel such as email.

4. The Buyer Persona

Some buyer personas favor a different communication style than others. Their preference depends on multiple factors: Their age, the nature of their job, their industry, and more.

In general, millennials like communicating by email more than over the phone. If you're reaching out to a younger buyer, take this into account.

You might find professionals in customer-facing roles are more amenable to talking on the phone because that's what they're used to. Those in internal jobs, however, might be more comfortable sending emails.

Lastly, those in more traditional industries are typically accustomed to phone calls.

5. The Deal Momentum

Are things moving along at a swift cadence? Is your prospect almost always responsive? Are you positive they're ready and willing to close? Then an email to touch base or check on the status of a task or request shouldn't stall your deal.

If, however, your prospect is unresponsive, on the fence about your product/service, or facing many levels of bureaucracy it might be faster and easier to pick up the phone. If they pick up the phone, you can immediately present your ask and receive an answer. If you get their voicemail, leave your message and follow up with an email.

Now that you understand the qualitative cues to follow when deciding to cold call or email, let’s take a look at what the research has to say.

Cold Call vs. Email Statistics

  1. 31% of sales reps find sending personalized manual emails to prospects is most effective compared to automated cold emails.
  2. While making a cold call, you usually have five to 10 minutes to appeal to the prospect.
  3. According to Gong, discussing ROI can reduce cold email responses by 15%.
  4. The best days to conduct cold calls are Wednesday and Thursday shortly before lunch (generally between 11 a.m. and noon) or during the last hour of the workday (between 4 and 5 p.m.).
  5. Personalized emails sent during the late morning and late afternoon time frames have better open and click-through rates.
  6. Cold emails that have a CTA gauging the prospect’s interest perform better than CTA’s asking to arrange a meeting.
  7. On average, it takes up to five outreach attempts for top-performing reps and eight outreach attempts for other reps to initiate a meeting or conversation with a new contact.
  8. It can take up to six call attempts to convert a new customer, and increasing call attempts can increase conversion by 70%.
  9. 48% of reps don’t make any follow-up attempt after a cold call.
  10. The typical cold email response rate is just 1%.
  11. Only 24% of cold email pitches are opened by recipients.

Cold Outreach Tools

As mentioned above, there are pros and cons to cold calls and emails. Ultimately, the choice comes down to what works best for you and the prospects you’re working with.

Whether you decide to focus on calls, emails, or a mix of both, check out these tools to support your cold outreach efforts.

1. HubSpot Email Tracking Software


If you rely on cold emails for your outreach strategy, consider using HubSpot’s free email tracking software. This tool connects directly to your inbox and notifies you when a prospect has opened or clicked on content within your email.

Email tracking software gives you valuable insight into the best time to reach out to your prospect and offers their email history with your company at a glance so you know exactly what message was delivered when.



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Outreach offers a robust platform where you can manage all of your prospecting activities in one place. Within Outreach, users can conduct outbound calls and send emails efficiently using personalized messaging.

Outreach is also a collaborative platform that allows teams to share relevant data and leverage sales intelligence technology for smarter outreach.

3. Smartlead


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Smartlead is an AI-powered cold email outreach tool that ensures your emails land in prospects' primary inboxes and not their spam folders. It offers unlimited AI warmups that mimic human-like email behavior, enhancing email importance and deliverability. Ideal for large-scale campaigns, its user-friendly interface and automation capabilities improve engagement and conversion rates by reaching the right inbox. Smartlead is a game-changer for marketers seeking innovative email solutions.

4. SalesLoft


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SalesLoft is an all-in-one platform where sales teams can conduct sales calls and messaging in one place. Not only can reps conduct cold calls from within the tools, but all calls are also recorded and logged for coaching and development opportunities. A notable feature of SalesLoft is the pre-recorded voicemail drop – no more leaving repetitive messages over and over.

5. Icebreaker by UpContent


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Need help knowing what to say when conducting cold outreach? The Icebreaker tool by UpContent can help. This platform sources relevant third-party content to help you foster stronger connections with your contacts. No more spending hours looking for interesting articles to send to prospects, Icebreaker does the work for you and integrates with your CRM so you know what content delivers results.

Following Up

These criteria make it much easier to choose between an email and a phone call for your first outreach. But what about subsequent touchpoints?

In my opinion, the beginning and the end of each sales engagement should be phone-heavy, since that’s where the strongest asks are — starting a relationship and closing a deal. In between, reps should opt for email as a rule of thumb.

Try implementing these tactics into your sales process to determine what works best for you.

Editor's note: This post was originally published in June 27, 2018 and has been updated for comprehensiveness.

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