The best sales engagement platform depends on your CRM and on LinkedIn. OXYGEN runs email, LinkedIn and WhatsApp in one sequence with LinkedIn automated in the cloud, a CRM built in and no seat per user, from $49 a month. Outreach and Salesloft suit large teams on Salesforce or Dynamics, HubSpot Sales Hub suits teams on HubSpot, Apollo brings a contact database, and lemlist and Reply.io are self-serve multichannel tools.
By Tim Scheuer, Co-founder of Oxygen · Checked October 26, 2026
A sales engagement platform runs the sequences reps send: emails, calls, LinkedIn touches and tasks in a set order. A sequence stops when the prospect replies, and every touch is logged to the CRM. The platforms below differ in five ways: which channels share one sequence, whether LinkedIn steps send themselves or wait as tasks for a rep, where the contact data comes from, whether the CRM is built in or synced, and whether you pay per seat or per workspace. LinkedIn is where they differ most: on Outreach, HubSpot and Apollo a LinkedIn step is a task a rep completes by hand.
| Tool | Channels in one sequence | LinkedIn steps | Contact data | CRM | How you pay | Starts at |
|---|---|---|---|---|---|---|
 OXYGENAgentic marketing and sales platform | Email, LinkedIn and WhatsApp in one sequence; calls in beta | Automated in the cloud; $34 a month per account | Waterfalls across 17 email providers; no database | Built in, with a deals pipeline; two-way HubSpot sync | Per workspace; no seat per user | Free plan; paid from $49 a month |
 OutreachSales engagement and AI agents for large teams | Email, calls through its dialer, and LinkedIn tasks | Manual tasks; its Sales Navigator integration needs Team or Enterprise | Data enrichment in every package | Two-way Salesforce and Dynamics sync; deal management in some packages | Per seat, plus AI credits | Quote only: seats plus AI credits |
 SalesloftSales engagement and revenue platform | Calls, texts, emails and LinkedIn touchpoints | Research, InMail and connection requests through Sales Navigator | AI enrichment of your records | Deals on the platform; logs activity to Salesforce, HubSpot or Dynamics 365 | Quoted by sales | Quote only |
 HubSpot Sales HubCRM with sales sequences | Automated email, plus call, email and LinkedIn tasks | Task reminders through Sales Navigator; a rep sends | Data enrichment from Starter; an AI prospecting agent in beta | The HubSpot CRM itself, free | Per seat; a Sales seat for sequences | Free CRM; sequences from $100 a seat a month on Professional |
 Apollo.ioContact database with sequences | Email, calls and LinkedIn tasks; no SMS or WhatsApp steps | Manual tasks on every plan | 240M contacts and 30M companies of its own | Deals on a pipeline; two-way Salesforce and HubSpot sync | Per seat | Free; Basic $65 a seat a month, or $49 billed yearly |
 lemlistMultichannel sequencer | Email, LinkedIn, calls, WhatsApp and SMS | Automated through a Chrome extension; one account per seat | 650M+ leads in the product, on credits | Contacts with stages, companies with a status; no deals pipeline | Per user on Multichannel; per team on Email | $69 a month for email only; Multichannel $109 a user |
 Reply.ioMultichannel sales engagement | Email, LinkedIn, calls, SMS and WhatsApp tasks | 1 account per user on Multichannel; $69 add-on otherwise | Search over 1 billion contacts, on credits | None; two-way Salesforce, HubSpot and Pipedrive | Per user | $99 per user a month on Multichannel, or $89 billed yearly |
OXYGEN Agentic marketing and sales platformBest for: B2B GTM teams that want email, LinkedIn and WhatsApp in one sequence, LinkedIn automated, and a CRM, with no seat per user.
OXYGEN runs email, LinkedIn and WhatsApp steps in one sequence, branches on connection state, signals or lead data, and stops a lead when they reply on any channel. LinkedIn runs in the cloud with no browser extension: visits, invites, messages, InMail, follows, likes and comments, at $34 a month per connected account. Replies land in one inbox and on a built-in CRM with a deals pipeline, and leads come from waterfalls across 17 email providers. Your team works in the web app, or your own AI agent runs it through the MCP server or the CLI.
Outreach Sales engagement and AI agents for large teamsBest for: Large sales teams on Salesforce or Dynamics that want sequences, a dialer, AI agents and forecasting from one vendor.
Outreach runs sequences across email, calls through its own dialer and LinkedIn tasks. It adds AI agents for research, personalization and deals, and deal and pipeline management in some packages. It syncs both ways with Salesforce and Microsoft Dynamics 365. A LinkedIn step is a task a rep completes by hand, and its Sales Navigator integration needs a Team or Enterprise license. Pricing combines a fee per seat with the AI credits you use, quoted on request.
Salesloft Sales engagement and revenue platformBest for: Sales teams that want cadences with calls and texts, AI agents and forecasting from one vendor.
Salesloft's Cadence puts calls, emails and LinkedIn steps in one cadence, and its dialer calls and texts buyers from anywhere. LinkedIn research, InMail and connection or introduction requests go through LinkedIn Sales Navigator. AI agents identify buyers, research accounts and draft emails, and deals, conversation intelligence and Clari Forecast sit on the same platform. It logs activity into Salesforce, HubSpot or Microsoft Dynamics 365. Every price comes from sales.
HubSpot Sales Hub CRM with sales sequencesBest for: Teams already on the HubSpot CRM that want sequences inside the tool they use.
HubSpot Sales Hub adds sequences to the HubSpot CRM on its Professional and Enterprise plans, for users with a Sales seat. A sequence mixes automated emails with manual email, call and other tasks. LinkedIn InMail and connection requests are task reminders a rep sends through the Sales Navigator integration. Each sequence holds up to 10 email templates. The CRM itself is free, and Professional starts at $100 a seat a month.
Apollo.io Contact database with sequencesBest for: Teams that want a large contact database and sequences in one tool, and send LinkedIn steps by hand.
Apollo pairs its own database of 240M contacts and 30M companies with sequences of emails, calls and LinkedIn tasks. It adds a dialer from Basic and a CRM with deals on a pipeline. A reply ends the sequence. Every LinkedIn step is a manual task: Apollo prepares the request or message and a rep sends it. It is priced per seat, with emails at 1 credit and mobile numbers at 8, and syncs both ways with Salesforce and HubSpot.
lemlist Multichannel sequencerBest for: Small sales teams that want email, LinkedIn, calls and WhatsApp in one sequence, with a contact database.
lemlist runs email, LinkedIn, calls and SMS in one sequence, with WhatsApp as a $20 add-on per user. Sequences branch, run A/B tests and stop when a lead replies by email or LinkedIn. LinkedIn steps need its Chrome extension and one LinkedIn account per seat, at $109 a user a month on Multichannel. A database of 650M+ leads sits in the product. Contacts have lifecycle stages and companies a status, but there is no deals pipeline.
Reply.io Multichannel sales engagementBest for: Teams that want calls, SMS and WhatsApp tasks in the same sequence as email and LinkedIn.
Reply.io mixes email, LinkedIn, calls, SMS and WhatsApp in one sequence, with WhatsApp as semi-automated tasks. Mailboxes come with warm-up and can be bought in the app, and a search over 1 billion contacts runs on credits. Salesforce, HubSpot and Pipedrive sync both ways. Multichannel includes 1 LinkedIn account per user, at $99 a user a month. Its AI SDR, Jason, starts at $500 a month through a sales demo.
| If you need | Pick |
|---|---|
| LinkedIn automated next to email and WhatsApp, a CRM included, no seat per user | OXYGEN |
| A large team on Salesforce or Dynamics, with a dialer, AI agents and forecasting | Outreach |
| Cadences with calls and texts, and forecasting from the same vendor | Salesloft |
| Sequences inside the HubSpot CRM you already use | HubSpot Sales Hub |
| A contact database and sequences from one vendor | Apollo.io |
| Self-serve multichannel with a contact database, for a small team | lemlist |
| Calls, SMS and WhatsApp tasks in the same sequence | Reply.io |
A sales engagement platform runs your outreach: emails, calls and LinkedIn steps in a set order, stopped when a prospect replies. It is not a CRM: the CRM stores the accounts, contacts and deals that outreach touches, and the engagement platform logs each touch there. A "sales platform" can mean either one, or a suite with both. HubSpot, for one, says its Sales Hub can run as a sales engagement platform next to another CRM.
It depends on which channels must run on their own. OXYGEN runs email, LinkedIn and WhatsApp steps in one sequence, with LinkedIn automated in the cloud, and stops a lead when they reply on any of them. lemlist covers email, LinkedIn, calls, WhatsApp and SMS, with LinkedIn through its Chrome extension, and Reply.io adds LinkedIn, calls, SMS and WhatsApp tasks to email. Outreach, Salesloft, HubSpot and Apollo are strongest on email and calls, with LinkedIn as a task a rep completes.
Most charge per seat. HubSpot Sales Hub Professional starts at $100 a seat a month and Reply.io Multichannel at $99 a user. lemlist Multichannel costs $109 and Apollo Basic $65 ($49 billed yearly). Outreach and Salesloft quote on request. OXYGEN charges one plan per workspace from $49 a month with no seat per user, plus $34 a month for each LinkedIn account you connect.
Outreach and Salesloft work alongside Salesforce or Dynamics, and Reply.io syncs with Salesforce, HubSpot and Pipedrive, so you keep a CRM. lemlist keeps contacts and companies but no deals pipeline. HubSpot Sales Hub is a CRM, Apollo includes deals on a pipeline, and OXYGEN includes a CRM with a deals pipeline on every plan and syncs both ways with HubSpot.
For leads who answer on email, LinkedIn and WhatsApp, OXYGEN keeps every reply in one shared inbox and stops that lead's sequence. It filters the inbox by sender, triages up to 100 conversations at once and can draft answers for a person to approve. lemlist's inbox replies by email, LinkedIn, WhatsApp or SMS on Multichannel, Reply.io's unified inbox holds sequence and team replies, and Apollo's covers connected mailboxes. HubSpot's free conversations inbox handles email, chat and Messenger.
HubSpot shows it most directly: every deal record has Last contacted and Last activity date properties that HubSpot fills in itself, on every plan. Salesloft's Deals flags idle deals and engagement gaps, and an Apollo deal lists its emails, calls and meetings. OXYGEN logs every email, LinkedIn and WhatsApp touch to the person and company timeline. Each company record shows its last touch, so you can sort or filter for accounts that went quiet.
Outreach syncs both ways with Salesforce and Microsoft Dynamics 365, and Apollo and Reply.io sync both ways with Salesforce and HubSpot. Salesloft logs activity into Salesforce, HubSpot or Microsoft Dynamics 365. OXYGEN has no Salesforce sync: it includes its own CRM and syncs both ways with HubSpot. A team that runs on Salesforce should pick one of the others.
OXYGEN runs from the web app with an Oxygent, its in-app AI agent, or from your own AI agent through MCP and the CLI. Outreach offers an MCP server and client with research, personalization and deal agents. Salesloft's agents research accounts and draft emails, and Reply.io sells an AI SDR, Jason, through a sales demo. Salesloft, Reply.io, Apollo and lemlist also connect to AI tools through MCP.
We make OXYGEN, so it comes first and you should read this as an interested list. We chose the other sales engagement platforms ourselves, and each entry says who it suits.
Facts and prices for every tool but OXYGEN come from its vendor's own pages, such as its website, pricing and docs. We checked them on the dates below. OXYGEN's facts and prices come from the product and its live price list.
The products named here are trademarks of their owners and are not affiliated with OXYGEN. Something out of date? Tell us.