Which Reply.io alternatives have slack integration?

Apollo.io, Lemlist, Outreach, Salesloft — 4 of the 6 Reply.io alternatives we review. We confirmed slack integration on each of their review pages.

Does Reply.io itself have slack integration?

Yes — we confirmed slack integration on Reply.io. If that is the only reason you are looking, the switch may not be worth it; the rest of this page shows what else differs.

How much do these cost?

Published list prices across these 4 tools run from $32 to $129.

Reply.io alternatives with slack integration (2026)

4 of the 6 Reply.io alternatives we review confirm slack integration. Reply.io carries it too, so this list is about what else changes when you switch.

The 4 that qualify

Alternative	Category	Roles	Entry price	Who it's for	What you give up vs Reply.io
Apollo.io Reply.io vs Apollo.io →	Sales engagement	SDR, AE, REVOPS	Basic $49 per seat / month	SDR teams 2–25 reps at Series A–B, founders running outbound themselves, and SMB-mid sales motions that need database + sequencer + dialer in one bill. Wrong for enterprise teams with named RevOps owners, regulated industries, or motions where data quality on senior buyers drives win rate.	AI agents, CRM writeback
Lemlist	Cold email	SDR, REVOPS	Starter $32 per seat / month	5–25 rep SMB outbound teams running multi-channel (email + LinkedIn + light call) sequences with a polished UX and active community playbook, where per-seat economics make sense. Wrong for agencies with many mailboxes (per-seat math breaks), enterprise teams with named RevOps owners, or motions where database depth on senior contacts drives win rate.	AI agents, Contact enrichment, Dialer, Meeting scheduler
Outreach Reply.io vs Outreach →	Sales engagement	SDR, AE, REVOPS	enterprise $100 per month	Series C+ SaaS and enterprise GTM orgs with 25+ rep multi-team SDR/AE motions, a named RevOps function, Salesforce as system of record, and budget for an enterprise sales engagement platform with conversation intelligence. Wrong for sub-25-rep teams, founder-led outbound, or motions where the bottleneck is data quality and ICP definition rather than sequencer governance.	AI agents, AI writing, Contact enrichment
Salesloft Reply.io vs Salesloft →	Sales engagement	SDR, AE, REVOPS, AM	enterprise $100 per month	Series B–C SaaS and mid-market enterprise GTM orgs with 15–50 rep SDR/AE/AM motions, named RevOps capacity, Salesforce as system of record, and an explicit preference for AI-forward sequencer + prioritization over the deepest enterprise reporting. Wrong for sub-25-rep teams, founder-led outbound, or 100+ rep enterprise orgs where Outreach-grade multi-team reporting depth is the bottleneck.	AI agents, AI writing, Contact enrichment

Qualifying means we confirmed slack integration while reviewing that tool. Absence elsewhere means unverified, not unsupported.

Ruled out by this filter

2 other Reply.io alternatives we review, where slack integration is unconfirmed. Worth a look if the requirement is softer than it sounds.

Instantly.ai SmartWriter.ai

Questions buyers ask

Which Reply.io alternatives have slack integration?: Apollo.io, Lemlist, Outreach, Salesloft — 4 of the 6 Reply.io alternatives we review. We confirmed slack integration on each of their review pages.
Does Reply.io itself have slack integration?: Yes — we confirmed slack integration on Reply.io. If that is the only reason you are looking, the switch may not be worth it; the rest of this page shows what else differs.
How much do these cost?: Published list prices across these 4 tools run from $32 to $129.

All Reply.io alternatives →Full Reply.io review →All sales engagement tools →

Capability vocabulary: Slack integration is one of the attributes we record on every tool review.