How to Choose Between Email and LinkedIn for Each Prospect

A LinkedIn DM is only as good as the prospect's habit of opening LinkedIn. Send a perfectly written message to someone who logs in twice a year, and it sits unread forever. The message wasn't bad. The channel was.

This is the quiet leak in a lot of LinkedIn-first outbound. You treat every prospect the same — DM them all — when a meaningful chunk of your list barely uses the platform. For those people, the right move isn't a better DM. It's a different channel.

The fix is to route each prospect to where they actually pay attention: DM the active ones, email the rest. The hard part is knowing, at a glance, which is which.

Connection count is a fast proxy for "will they see my DM"

You can't read minds, but you can read signals. The most reliable one is connection count.

People with fewer than about 500 connections are usually light or inactive LinkedIn users. They made a profile years ago and rarely check it — so a DM, no matter how good, is unlikely to land in front of them. People with 500-plus connections tend to be far more active: they post, comment, accept requests, and actually read their messages. That makes them reachable by DM.

It's not a perfect rule, but it's a fast one, and it routes most prospects correctly without you having to inspect every profile by hand. (Recent posts and comments are an even stronger activity signal when they're there.)

How most people do this manually

Doing this by hand means treating channel choice as a per-prospect research task:

• Open each prospect's profile and glance at their connection count and recent activity
• Decide whether a DM is likely to be seen or will sit unread
• For the inactive ones, go hunt down a work email through a separate tool
• Verify the email so it doesn't bounce
• Re-write or copy your message into the right channel for each person
• Keep track of who you reached where

Most people skip all of this and just DM everyone, because the per-prospect routing is too much work at volume. The result is a chunk of the list that never sees a thing — not because they weren't interested, but because the message went to a channel they don't check.

What this looks like with a Sliq agent

You describe the routing rule in plain language:

For this list, DM the people who are active on LinkedIn and email the ones who aren't. Use connection count as the signal — under 500 connections, find their email and send there instead. Send the same personalized message either way.

The agent then runs it across the whole list:

• Checks each prospect's LinkedIn activity, using connection count as the primary signal
• Keeps the active prospects on LinkedIn, where a DM will actually be read
• Routes the low-activity prospects to email instead of a DM that would go unseen
• Finds and verifies a work email for the email group
• Sends your personalized message through the right channel for each person
• Holds drafts for your review so the message stays yours on both channels

Instead of either spraying everyone with DMs or doing per-profile research by hand, you get one list, correctly split, each prospect reached where they'll actually see it.

Why a Sliq agent isn't just a channel toggle

A toggle picks one channel for the whole campaign. That's the exact mistake — it assumes every prospect lives in the same place. Some live on LinkedIn; some haven't logged in since they made the account.

A Sliq agent decides per prospect:

• It reads activity, not just contact info. Connection count and recent posts tell it whether a DM has a chance of being seen, so the routing reflects how each person actually uses LinkedIn.
• It finds the email when the DM won't land. For the inactive prospects, it looks up and verifies a real work email instead of leaving them stranded on a channel they ignore.
• It keeps the message consistent. The same personalized message reaches each prospect — just through the channel they check, so you're not rewriting everything per platform.
• It scales the judgment. The "is this person active enough to DM" call is easy for one prospect and exhausting for five hundred. The agent makes it on every one.

The payoff is reach. The prospects who would have silently ignored a DM get an email they'll actually open — and the ones who live on LinkedIn still get the more personal DM.

Delegate this to a Sliq agent ->

Related workflows

• Personalize LinkedIn messages if you want the message itself to feel written for each prospect, on whichever channel it lands
• Fix your LinkedIn outreach if replies are low and you're not sure whether the channel, the message, or the profile is the problem
• Follow up with prospects who said yes but never booked if your issue is the booking stage rather than getting the first reply
• Browse all GTM plays

Frequently asked questions

Should I reach out on LinkedIn or by email?

It depends on the prospect, not on a blanket rule. LinkedIn wins when the person is active there, because your profile builds trust before the message lands and a DM is more personal than a cold email. But a DM is worthless if the prospect rarely logs in — it just sits unread. For those people, email is the only channel that reaches them. The right move is to match the channel to where each prospect actually pays attention.

How can I tell if a prospect is active on LinkedIn?

Connection count is a fast, reliable proxy. People with fewer than about 500 connections are usually light or inactive users — they created a profile but don't check it, so a DM is unlikely to be seen. People with 500-plus connections tend to be far more active and more likely to read and reply to a message. Recent posts, comments, or reactions are an even stronger signal, but connection count alone already routes most prospects correctly.

What should I do with prospects who have fewer than 500 LinkedIn connections?

Email them instead of relying on a DM they probably won't see. Find a verified work email, then send the same personalized message you'd have sent on LinkedIn through the channel they actually check. You're not giving up on the prospect — you're reaching them where they pay attention.

Is it better to use one channel or both for outbound?

Use the right channel per prospect rather than blasting both at everyone. Routing — DM the active, email the inactive — keeps each message relevant and avoids looking like you're spraying the same person everywhere. You can still fall back to the second channel later for a specific prospect who didn't respond, but leading with the channel they actually use lifts reply rates more than doubling up.