Should you start with LinkedIn or email?

Start on LinkedIn when you have profiles but not verified emails, when the buyer is senior and active on the platform, or when your list is small and specific. Start with email when you hold named, verified addresses or the buyer is hard to find on LinkedIn. When in doubt, test 100 people on each.

This post gives a way to decide, not a winner. The quick answer to "which converts better" does not exist, because the published numbers for each channel count different things. What you can do is look at five facts about your list and your buyer, and let them point to a first channel.

Why can't you just compare reply rates?

Because they are measured on different bases. The Instantly benchmark report puts the average cold email reply rate at 3.43%, dividing all replies by emails sent. Belkins reports 0.45% for 2025, dividing unique replies by emails sent and excluding auto replies. We covered why in does cold email still work.

LinkedIn rates are worse to compare. On our own account, 40% of people messaged replied, but it is one account with a specific audience and its own definition of a reply. See the own account case study for its definitions. A 40% LinkedIn figure and a 3.43% email figure are not two results from one test. They are two different questions. Do not use them to pick a channel.

Which five facts decide the first channel?

1. What contact data do you have?

This is the most practical question. A LinkedIn profile URL lets you start on LinkedIn. A verified email lets you start on email. If you have only one, the choice is made for you, and the other channel is a later step you can add when you find the second piece of data. Sellinger's enrichment can look up verified emails and phone numbers for a person or company, but check what you hold before you plan the sequence.

2. Who is the buyer?

Gong reports that C-level executives are 30.2% less likely to reply to cold emails than non-executives, and that executives who open an email typically read it for no more than nine seconds. Belkins reports reply rates of 0.57% for founders and owners, 0.42% for C-level and 0.32% for VPs on email. Together this says that email to senior buyers is hard. It does not say LinkedIn is easy, but a senior person who is active on the platform sees an invitation with a short note in a feed they already read. If the buyer is a founder of a small company, either channel can work. The Belkins company size split shows 0.72% for companies of 0 to 10 employees against 0.22% for 10,000 or more.

3. What industry?

Industry changes both where people read and what the rules are. Our case studies show the difference.

• A carrier selling regulated waste services in Bulgaria wrote by email to named heads of quality, ESG, procurement and logistics, as a formal letter. 8.2% of named owners replied against 2.2% of generic clinic and lab inboxes (Green Shield).
• A device maker surveyed installers by email, in 21 languages. Installers reply from job sites, evenings and weekends, and half of their messages arrived outside office hours (Shelly installer programme).
• Our own outbound to sales and marketing buyers runs on LinkedIn (own account).

The pattern is not that one channel suits an industry. It is that the first channel followed where the audience already communicated, and what their first message could carry. A formal letter suits email. A short peer note suits a LinkedIn invitation.

4. Which country?

Reply behavior differs by country. Belkins reports email reply rates of 1.43% for Poland, 0.74% for Ireland, 0.73% for Denmark, 0.63% for Canada, 0.51% for the US and 0.48% for the UK. The same report shows these come from its own client campaigns, so the mix of senders differs by country too.

Law differs more. Canada requires consent for commercial electronic messages, with limited implied consent for business contacts. The US requires an opt out. The UK exempts company addresses from the PECR consent rule but still applies UK GDPR to named people. LinkedIn invitations raise their own platform rules, not email law. Read is cold email legal before you email into a country you have not checked. This is not legal advice.

5. How good is the list?

A clean, small, specific list fits LinkedIn, where you can see the person's current role before you write. A large list with uncertain addresses fits email badly, because bounces hurt your sender reputation; Google's rules ask for a spam rate below 0.30% (Google and Yahoo requirements). If your addresses are verified and your list is large, email scales more easily than LinkedIn, because LinkedIn caps what each account can do. The LinkedIn invitation limits post covers the documented facts. Sellinger's defaults are 20 invitations a day and 150 a week per LinkedIn account, and 50 sends a day per mailbox, each set per account.

What does the decision look like in one table?

How do you test it?

Do not decide on theory. Take 200 people from the same list who have both a profile and a verified email. Split them at random into two groups of 100. Send the same message idea on each channel, with one question and the same follow up count. Count replies the same way and count the outcome you care about, such as meetings or referrals. Run it for four weeks. Whichever channel wins for this list is your first channel for similar lists.

Then use both. The channel that wins gets the first message. The other becomes the follow up after silence, and a reply on either one stops the other. That is the sequence in LinkedIn plus email cadence, and it is how Sellinger's default switch rules work: after 4 LinkedIn follow ups a lead moves to email, and after 5 email follow ups to WhatsApp, with every value changeable per campaign. See multichannel follow up sequences.

What about the compare page?

We have a side by side of the two channels on the cold email vs LinkedIn outreach page. Use it for the structural differences: limits, setup, rules and cost. Use this post to choose for your own buyer.

A short checklist

• [ ] I know whether I hold a profile URL, a verified email, or both for each contact.
• [ ] I know the seniority of the buyer and where they read.
• [ ] I have split my list by country and checked the rules for each.
• [ ] My list is small and specific, or it is large and verified.
• [ ] I have a second channel planned for people who stay silent.
• [ ] I have a test of 100 on each channel before I scale.