What's the Best Tool for Prospecting? Apollo vs Instantly vs lemlist Compared
Apollo, Instantly, and lemlist all promise to automate cold outreach, but they solve different parts of the prospecting problem: finding who to contact, actually landing in an inbox, and personalizing the message.
"Best tool for prospecting" searches usually land on some mix of Apollo, Instantly, and lemlist, three tools that overlap just enough to be genuinely confusing to compare. Each one is strongest at a different stage of the same motion.
The short answer
Apollo is the strongest starting point if you need to find contacts and sequence them in one place. Instantly is built specifically for sending volume and inbox deliverability, less about finding leads, more about making sure the emails you send actually land. lemlist leans hardest into personalization and multichannel touches (email, LinkedIn, calling) once you already know who you're contacting.
Apollo: find and sequence in one motion
Apollo's prospecting strength is convenience: search a large contact database, build a list, and drop it straight into a sequence without exporting anything. For teams running their first structured outbound motion, that single-tool simplicity is hard to beat.
Instantly: built for deliverability at volume
Instantly's core strength isn't finding leads, it's protecting your ability to actually reach an inbox once you have them. Warmed sending domains, inbox rotation, and deliverability monitoring are the product. Teams sending high volumes of cold email who keep landing in spam usually reach for Instantly specifically to fix that problem, then add a separate source for leads.
lemlist: personalization and multichannel touches
lemlist's differentiator is depth of personalization (dynamic images, liquid text variables) and sequences that move across email, LinkedIn, and phone rather than staying in one channel. It's the right pick if your outbound is bottlenecked on generic-sounding messages rather than on finding contacts or landing in an inbox.
Side-by-side
| Apollo | Instantly | lemlist | |
|---|---|---|---|
| Best for | Finding + sequencing in one tool | Sending volume and deliverability | Personalization and multichannel |
| Lead database included | Yes, large | Basic, add-on | Yes, growing |
| Deliverability tooling | Basic | Deepest in this list | Good |
| Multichannel (LinkedIn, calling) | Limited | Email-first | Yes, a core strength |
The part none of these tools do for you
All three will help you send messages. None of them will tell you which signals mean an account is actually in market right now, or read every reply and book the meeting. That's still a manual job layered on top of whichever tool you pick.
mkdir runs that layer. We build the ICP scoring and signal-based targeting upstream of your sequencer, whichever one you use, and run an AI agent that works every reply until it's a meeting on your calendar.