Key takeaways
- Mailshake sends and follows up automatically; Pebbles Ai drafts and does not run sending sequences.
- Mailshake includes warm-up, verification and rotation; Pebbles Ai has no deliverability tooling.
- Pebbles Ai writes every touch from Company Intel, your business knowledge and brand voice.
- A common setup is Pebbles Ai for research and writing, Mailshake for sending.
What is each product built for
Mailshake is built for sending cold email, while Pebbles Ai is built for deciding who to write to and what to say. Mailshake runs sequences that send and follow up on a schedule, with tools to protect your sending reputation, a data finder for prospect emails and, on its Sales Engagement plan, a power dialler.
Pebbles Ai, a go-to-market operating system, covers the steps before the first send. Its assistants research each target company, find the people to contact and write every email and LinkedIn touch from your company knowledge. The emails go into your own Gmail or Outlook as drafts, so you decide when each one is sent.
Where is Mailshake stronger
Mailshake is stronger at everything that happens after the copy is written. Sequences send and follow up on their own, with A/B testing, scheduling and throttling, and its deliverability tools cover warm-up, verification and mailbox rotation. Pebbles Ai does none of that.
It also covers calling with a power dialler on its higher plan and integrates with Salesforce, Pipedrive and HubSpot. A team whose day is measured in emails sent and calls made will find more of its workflow inside Mailshake.
- Automated sequences with A/B testing.
- Warm-up, verification and mailbox rotation.
- A power dialler on the Sales Engagement plan.
- Native CRM integrations with Salesforce, Pipedrive and HubSpot.
Where does Pebbles Ai work differently
Pebbles Ai puts its effort into the research and the words rather than the sending. Before writing, the assistants work from Company Intel, which holds your business knowledge and brand voice, and a personality chosen for each piece, so every touch starts from your offer and your voice.
Campaigns cover email and LinkedIn, single or multi-touch, up to seven touches. Emails are saved as drafts in your connected Gmail or Outlook, and sending a template to a CRM segment always asks for approval, in every mode. Replies then arrive in Smartbox, where Write with AI drafts the answer from the thread.
Which team should pick which
Pick Mailshake when sending volume and deliverability are the hard part; pick Pebbles Ai when knowing the account and writing a relevant message is the hard part. Agencies running many client campaigns tend to need the first, founders writing their own outreach the second.
As an illustration, a small recruitment firm wants to reach forty hiring managers at named logistics companies. Pebbles Ai finds the people, researches each company and drafts a three-touch email per person in the firm's voice. If the firm later sends to thousands of contacts a month, it would load that copy into a sending tool such as Mailshake.
- Mailshake: agencies and small teams sending cold email at volume.
- Pebbles Ai: teams that write fewer, researched messages and want leads and a CRM in the same place.
What should you check before switching
Check whether you depend on automated sending, because Pebbles Ai has no automated sequences, warm-up or rotation. Teams that send cold email at volume usually keep Mailshake for sending and use Pebbles Ai for research, leads and drafting.
Also check your mailbox and CRM setup. Pebbles Ai needs a connected Gmail or Outlook mailbox to save drafts, and it has no native sync with HubSpot or Salesforce, so decide where contacts and deals will live before you move anything.
Pebbles Ai and Mailshake side by side
How each product approaches the same jobs, from Pebbles Ai's product records and Mailshake's own public pages.
| Pebbles Ai | Mailshake | |
|---|---|---|
| Primary job | A workspace of AI assistants for research, leads, outreach drafting, CRM and inboxes | Cold email and sales engagement |
| Finding prospects | People by role and location at 1 to 10 named companies, up to 100 a run, with a work email where one is found | Data Finder to find prospect emails, with credits included and more sold separately |
| Outreach | Drafts email and LinkedIn outreach up to seven touches; emails saved as drafts in Gmail or Outlook | Automated email sequences with A/B testing, scheduling and throttling |
| Deliverability | No warm-up, verification or rotation; drafts sit in your own mailbox | Warm-up and verification on Starter; email rotation from Email Outreach |
| Calling | No calling or SMS | A power dialler with phone numbers on the Sales Engagement plan |
| AI writing | Writes from Company Intel, your business knowledge and brand voice, with a personality per piece | AI Email Writer that generates email copy |
| CRM | Built-in CRM, labelled Beta; Attio and Pipedrive through MCP, each write following your execution mode | Integrations with Salesforce, Pipedrive and HubSpot from Email Outreach |
| Inboxes | Smartbox for Gmail and Outlook; Socialbox for LinkedIn, WhatsApp, Instagram and Telegram chats | See their site |
Checked 2 November 2026 on each vendor's public pages. Where a cell says See their site, their pages did not state it when we checked, so confirm it with them.
About 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.
What its own pages say
- Automated email sequences with A/B testing, and advanced scheduling and throttling from Email Outreach. Source: Mailshake
- Email warm-up and email verification on Starter, and email rotation from Email Outreach. Source: Mailshake
- A power phone dialler with phone numbers on the Sales Engagement plan. Source: Mailshake
- Data Finder to find prospect emails, with data finder credits included and more sold separately. Source: Mailshake
- AI Email Writer that generates email copy, and social automation for multichannel selling. Source: Mailshake
- CRM integrations with Salesforce, Pipedrive and HubSpot from Email Outreach. Source: Mailshake
- Starter, Email Outreach, Sales Engagement and Agency, billed per user; Data Finder credits and ready-to-use mailboxes are add-ons. Source: Mailshake
Where Mailshake is stronger
- Sequences that send and follow up automatically on a schedule.
- Deliverability tooling: warm-up, verification and mailbox rotation.
- A power dialler on its Sales Engagement plan, and native CRM integrations.
Where Pebbles Ai differs
- Writes email and LinkedIn outreach, up to seven touches, from your company knowledge and brand voice; emails are saved as drafts in your connected Gmail or Outlook mailbox and LinkedIn messages are drafted for you to send; it drafts, it does not run an automated sending sequence.
- Finds fresh leads inside 1 to 10 named target companies by role and location, 1 to 100 per run, landing as CRM contacts with a work email where one is found, a confidence score and a catch-all flag.
- Company Intel holds business knowledge and brand voice built from your website, files and pasted text, and the assistants write from it.
- One workspace spans research, lead generation, CRM, outreach drafting, two inboxes, assistants, company knowledge, connections and memory, rather than a single point tool.
Before you switch
- Pebbles Ai has no automated sequences, warm-up or rotation.
- Teams that send cold email at volume usually keep Mailshake for sending and use Pebbles Ai for research, leads and drafting.
We make Pebbles Ai. Facts about other products come from their own public pages, checked on .
Where Pebbles Ai fits
- CapabilityOutreach contentBuild email and LinkedIn campaigns of up to seven touches with a personality per piece; emails are saved as drafts in your connected Gmail or Outlook.
- FoundationCompany IntelCompany Intel holds the business knowledge and brand voice the assistants write from, built from your website, files and pasted text.
- CapabilitySmartboxSmartbox brings Gmail and Outlook into one place and drafts replies from the thread, the recipients and your brand voice.
Common questions
Does Pebbles Ai send cold email sequences automatically?
No. Pebbles Ai writes multi-touch outreach and saves emails as drafts in your mailbox; it does not schedule or send the steps for you.
Can Pebbles Ai warm up a mailbox?
No. Pebbles Ai has no warm-up, verification or mailbox rotation, so keep a sending tool for that work.
Can I write copy in Pebbles Ai and send it from Mailshake?
Yes. You can draft researched emails in Pebbles Ai from your company knowledge, then copy them into Mailshake or another sending tool.
Does Pebbles Ai include a dialler?
No. Pebbles Ai has no dialler, calling or SMS; it covers email, LinkedIn drafts and chats in Socialbox.
About this page. Written by the Pebbles Ai team for people who run sales, marketing and growth. Last updated .