Key takeaways
- lemlist is built around multichannel campaigns, with LinkedIn automation beside email.
- Instantly is built around sending cold email at volume from unlimited email accounts.
- Both include warm-up and a lead database sized by the vendor.
- Pebbles Ai has no sending infrastructure; it saves drafts in your connected mailbox.
- lemlist is in the Pebbles Ai MCP catalogue, so the assistants can work with its contacts and sequences.
How do lemlist and Instantly differ
lemlist is built around the multichannel campaign, while Instantly is built around sending cold email at volume. lemlist adds LinkedIn automation to email, with a dialler, WhatsApp and SMS as add-ons and an AI agent called lemAgent; Instantly lists unlimited email accounts with warm-up, so one team can spread its sending across many inboxes.
Both carry a lead database, sized by the vendors at 650M+ for lemlist and 450M+ for Instantly, and both include warm-up. The split shows in what a campaign looks like: a lemlist campaign can move between email, LinkedIn and, with add-ons, a call or a WhatsApp message, while an Instantly campaign centres on email sent from a pool of mailboxes.
Instantly vs lemlist on personalisation and sending setup
lemlist is stronger when each touch should vary by channel and warm-up should come with every plan, through lemwarm. Its email and phone finder lets a seller look up a contact and add them to a multichannel campaign in one tool.
Instantly is stronger when the job is volume: unlimited email accounts, warm-up across all of them and waterfall enrichment that tries more than one data provider, which the vendor puts at 5+ providers. Its plans are flat monthly or annual, with outreach and leads sold separately or as a bundle.
lemlist or Instantly: which teams pick which
Pick lemlist if your outreach depends on LinkedIn as much as on email, or if you expect to add calls and messaging channels later. Pick Instantly if you run email campaigns for several segments or clients at once and need many mailboxes warmed and sending.
An illustrative founder selling a niche service to thirty agencies, who wants each touch to feel personal and visible on LinkedIn, tends to fit lemlist. An agency running outbound for a dozen clients, each with its own domains and mailboxes, tends to fit Instantly.
Where does Pebbles Ai fit instead
Pebbles Ai fits teams that want fewer, better emails sent from their own mailbox rather than through a separate sending platform. The assistants write email and LinkedIn outreach of up to seven touches from Company Intel, your business knowledge and brand voice, and save each email as a draft in your connected Gmail or Outlook for you to review and send.
It does not fit a volume motion. Pebbles Ai has no sending infrastructure, warm-up or deliverability tools and makes no deliverability claims, and LinkedIn messages are drafted for you to send yourself. lemlist is in the Pebbles Ai MCP catalogue, so a team that keeps lemlist can let the assistants work with its contacts and sequences from chat.
What should you check before choosing a cold email tool
Check the channels and volume you really need, because both tools are built for a particular shape of outbound. Paying for LinkedIn automation you never use, or for mailbox capacity you never fill, is the common mismatch.
- Count the channels you use today; LinkedIn automation only matters if LinkedIn is part of your motion.
- Work out how many mailboxes and domains you will send from, and who will look after them.
- Read each vendor's sending guidance and your email provider's policies before you scale.
- Check GDPR and the e-privacy rules for each country you email.
- Decide who writes the copy: a template, an AI agent or a person reviewing drafts.
lemlist, Instantly and Pebbles Ai side by side
How each product handles channels, mailboxes, data and copy for cold outreach.
| lemlist | Instantly | Pebbles Ai | |
|---|---|---|---|
| Built for | Multichannel cold outreach across email and LinkedIn | Cold email sent at volume across many inboxes | Drafted email and LinkedIn outreach written from your company knowledge |
| Channels | Email and LinkedIn automation, with dialler, WhatsApp and SMS add-ons | Cold email | Email drafts in Gmail or Outlook; LinkedIn messages drafted for you to send |
| Mailboxes and warm-up | lemwarm warm-up in all plans | Unlimited email accounts with warm-up | Your own connected mailboxes; no warm-up or sending infrastructure |
| Lead data | A database the vendor sizes at 650M+, with email and phone finder | A database the vendor sizes at 450M+, with waterfall enrichment | Its own GDPR-compliant B2B contact database, searched at named companies |
| AI | lemAgent | AI agents | Marketing and Strategy assistants that write from Company Intel |
| Pricing structure | Per user, monthly or annual | Flat monthly or annual plans, outreach and leads separate or bundled | Paid per-seat plans; see the pricing page |
Checked 2 November 2026 on each vendor's public pages. The two named products' cells state only what their own sites say; where a site says nothing on a point, the cell reads See their site.
The products compared
lemlist
Multichannel cold outreach platform
A cold outreach tool for email and multichannel campaigns, with a built-in lead database, email and phone finder, LinkedIn automation, warm-up and an AI agent, priced per user.
Best for: Founders and outbound teams running personalised cold email and LinkedIn campaigns who want warm-up and a lead database in the same tool.
Pricing model: Email, Multichannel and Enterprise, priced per user, monthly or annual. Source: lemlist pricing
Instantly
Cold email sending and lead platform
A cold email platform built for sending at volume across unlimited email accounts with warm-up, plus a B2B lead database, waterfall enrichment and AI agents, on flat monthly plans.
Best for: Agencies and outbound teams sending cold email at scale across many inboxes.
Pricing model: Separate Outreach, Leads (credits) and bundle plans, flat monthly or annual, plus VIP and Enterprise. Source: Instantly pricing
We make Pebbles Ai. Facts about other products come from their own public pages, checked on .
Where Pebbles Ai fits
- CapabilityOutreach contentThe assistants write email and LinkedIn outreach of up to seven touches from Company Intel and save emails as drafts in your connected Gmail or Outlook; nothing is sent on a schedule.
- CapabilitySmartboxReplies land in Smartbox across Gmail and Outlook, where Write with AI drafts answers in Fast, Balanced or Comprehensive mode from the thread and your brand voice.
- FoundationIntegrationslemlist is in the MCP catalogue, so once connected the assistants can work with your lemlist contacts and sequences from chat; the catalogue may change.
Common questions
Is lemlist or Instantly better for deliverability?
We do not rank them; both include warm-up, and results depend heavily on your domains, list quality and volume. Pebbles Ai makes no deliverability claims because you send its drafts from your own mailbox.
Can Pebbles Ai send cold email campaigns?
No. It saves emails as drafts in your connected Gmail or Outlook mailbox and does not schedule or send sequences.
Does Pebbles Ai work with lemlist?
Yes. lemlist is in the Pebbles Ai MCP catalogue, so the assistants can use your lemlist contacts and sequences from chat once you connect it.
Which suits LinkedIn outreach, lemlist or Instantly?
lemlist lists LinkedIn automation as part of its campaigns, while Instantly is built around cold email. Pebbles Ai drafts LinkedIn messages for you to send, and Socialbox brings your LinkedIn chats into the workspace.
About this page. Written by the Pebbles Ai team for people who run sales, marketing and growth. Last updated .