Key takeaways
- Agencies prospect for clients, for themselves, or both, and need different tools for each.
- Client workspaces and white label matter when you run outreach for others.
- Mailbox and sending limits shape cost at agency scale.
- Pebbles Ai fits an agency's own new business, not white-label client delivery.
What agencies need from a prospecting platform
Agencies need a prospecting platform that keeps each client's data, mailboxes and reports separate. Mixing clients in one account creates errors and awkward reporting.
- A separate workspace or sub-account per client.
- White-label options if clients log in.
- Room for many mailboxes and warm-up.
- A unified inbox for replies across clients.
How the platforms serve agencies
These platforms are common in agency stacks. The notes summarise each product's own description.
- Smartlead: unlimited mailboxes, warm-up, a master inbox and white label per client workspace.
- Instantly: unlimited sending accounts with warm-up, a leads database and waterfall enrichment.
- HighLevel (GoHighLevel): a CRM, funnels, websites, email and SMS, with white-label sub-accounts.
- Clay: spreadsheet-style enrichment workflows for building client lists from many data providers.
- lemlist: cold email and LinkedIn automation, with dialler, WhatsApp and SMS add-ons.
- Mailshake: automated sequences, warm-up and email rotation, with an Agency plan.
An agency example
Take Copperleaf Growth, an illustrative outbound agency running campaigns for six software clients. Each client needs its own domains, lists and weekly report.
Copperleaf could build lists in Clay, send from client workspaces in Smartlead and share results through its own reports. Its own new business runs in a separate account so client work never mixes with it.
Where Pebbles Ai fits
Pebbles Ai fits agencies prospecting for their own new business. Your assistant researches target clients with citations, finds the right people and drafts outreach from what Company Intel knows about your agency.
It does not offer white-label client workspaces, mailbox warm-up or automated sequence sending. Agencies delivering outbound for clients keep a sending platform for that work.
The products compared
Smartlead
Cold email sending infrastructure
A cold email tool for sending across unlimited mailboxes with AI warm-ups and a Master Inbox, with plans it says are built for agencies and white labelling priced per client workspace.
Best for: Agencies and senders running high-volume cold email across many mailboxes.
Pricing model: Tiered monthly or annual plans with an annual discount and a free trial; white labelling is an add-on per client workspace. Source: Smartlead 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
HighLevel (GoHighLevel)
All-in-one marketing platform for agencies
A business platform it calls the AI-powered business operating system, bundling CRM and pipelines, funnels and websites, email and SMS marketing, calling, conversation AI and white-label sub-accounts for agencies.
Best for: Marketing agencies and service businesses that want CRM, funnels, messaging and calling under one roof, often resold to clients through sub-accounts.
Pricing model: Starter, Unlimited, Founder (called Pro in the FAQ) and Enterprise, month to month or annual, with usage-based charges for telecom and AI and paid add-ons. Source: HighLevel (GoHighLevel) pricing
Read the comparison with HighLevel (GoHighLevel) Visit HighLevel (GoHighLevel)
Clay
Data enrichment and GTM workflow builder
A spreadsheet-style workspace for building enrichment and prospecting workflows, pulling from many data providers with waterfalls and an AI web research agent, priced by actions and data credits.
Best for: GTM engineers and RevOps teams who want to design custom enrichment and research workflows across many data sources.
Pricing model: Free, Launch, Growth and Enterprise; monthly actions and data credits; unlimited seats. Source: Clay pricing
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
Mailshake
Cold email and sales engagement
A cold email and sales engagement tool with automated sequences, warm-up and rotation, an AI email writer, a data finder for emails and a power dialler on its higher plan.
Best for: Small teams and agencies that want to send cold email sequences at volume with deliverability tools built in.
Pricing model: Starter, Email Outreach, Sales Engagement and Agency, billed per user; Data Finder credits and ready-to-use mailboxes are add-ons. Source: Mailshake pricing
We make Pebbles Ai. Facts about other products come from their own public pages, checked on .
Where Pebbles Ai fits
Common questions
Should an agency use the same tools for clients and itself?
Often not. Client delivery needs separate workspaces and reporting, while your own new business needs research and relationship tracking.
What is white label in a prospecting platform?
White label lets an agency show the platform under its own brand to clients. It matters when clients log in to see results.
How do agencies keep client data separate?
They use a separate workspace or sub-account per client, with its own mailboxes and lists. Shared accounts make mistakes far more likely.
About this page. Written by the Pebbles Ai team for people who run sales, marketing and growth. Last updated .
