Cold Outreach
Cold outreach tools for Slack
12 of the 48 cold outreach tools in this directory name Slack as an integration.
A listing names at most eight integrations, so this is what each tool chose to show rather than everything it connects to. 4 of them are free or have a free plan.
Listings checked up to Nov 12, 2026 · Where the facts come from
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| InstantlyCold email from unlimited inboxes, priced by emails and contacts | Free trial · from $37.6/mo | Trial only | Web |
| SmartleadHigh-volume cold email with unlimited mailboxes and client workspaces | Free trial · from $32/mo | Trial only | Web, iOS, Android |
| La Growth MachineLinkedIn, email, call and X sequences billed per sending identity | Free trial · from $60/mo | Trial only | Web |
| QuickMailCold email and LinkedIn campaigns with unlimited senders and users | Free trial · from $49/mo | Trial only | Web, Browser extension |
| MixmaxEmail sequences, tracking and meeting booking inside Gmail | Free plan · from $29/mo | Yes | Web, Browser extension |
| OutreachSales engagement and AI agent platform for revenue teams | Paid | No | Web, iOS, Android, Browser extension |
| OverloopAI prospecting with a contact database and email and LinkedIn steps | Free trial · from $69/mo | Trial only | Web, Browser extension |
| SalesBlinkCold email sequences with warm-up and AI agent connections | Free trial · from $25/mo | Trial only | Web |
| OutplayMultichannel sales outreach across email, phone, social and SMS | Free plan · from $39/mo | Yes | Web, iOS, Android, Browser extension |
| ReachInboxCold email sequencer with unlimited mailboxes and AI warmup | Free plan · from $30/mo | Yes | Web |
| FolderlyEmail deliverability tools: placement tests, fixes and monitoring | Free plan · from $79/mo | Yes | Web |
| Dux-SoupLinkedIn automation now sold as STACKED, local or cloud | Free trial · from $41.25/mo | Trial only | Web, macOS, Windows |
Common questions
Which cold outreach tools work with Slack?
12 of the 48 cold outreach tools in this directory name Slack as an integration. They are Instantly, Smartlead, La Growth Machine, QuickMail, Mixmax, Outreach, Overloop, SalesBlink, Outplay, ReachInbox, Folderly and Dux-Soup.
Are these the only cold outreach tools that work with Slack?
Probably not. A listing names at most eight integrations, so a tool that connects to Slack may still not say so among the eight it chose. 36 of the 48 cold outreach tools here do not name it; that is a "does not say", not a "cannot". Check the vendor's own integrations page before you rule one out.
Which of these cold outreach tools are free?
Mixmax, Outplay, ReachInbox and Folderly are free or have a free plan.
When was this checked?
Each listing shows its own date. On this page they run from Oct 17, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and each listing names the pages it was read from.