Act-On vs Mailshake (Outreach): Complete Comparison (2026)
Choosing between Act-On and Mailshake (Outreach) is a common decision for marketing automation buyers in 2026. Act-On has been in the market since 2008, giving it a 7-year head start over Mailshake (Outreach) (founded 2015). Act-On serves 4K+ orgs users while Mailshake (Outreach) has 75K+ users globally. Act-On differentiates with lead nurturing and email marketing, while Mailshake (Outreach) leads with email sequences and email warm-up. In this head-to-head comparison, Mailshake (Outreach) earns a higher hiltonsoftware.co score of 88/100 — but the right choice depends on your specific needs, budget, and team size.
Quick Comparison
Feature-by-Feature Comparison
Pros & Cons at a Glance
After comparing Act-On and Mailshake (Outreach) across features, pricing, and user satisfaction, Mailshake (Outreach) takes the lead with a score of 88/100 versus Act-On's 84/100. Mailshake (Outreach)'s key advantages include "simple and focused on outreach" and "good deliverability tools". That said, Act-On has its own strengths — particularly "good for mid-market b2b" — making it a viable alternative for specific use cases.
Neither Act-On nor Mailshake (Outreach) offers a free plan. Act-On starts at $900/mo and Mailshake (Outreach) at $29/user/mo. For the investment, Act-On delivers lead nurturing and email marketing, while Mailshake (Outreach) provides email sequences and email warm-up.
Bottom line: Choose Act-On if you need mid-market b2b companies wanting dedicated marketing automation beyond email. Go with Mailshake (Outreach) if your priority is sdrs and sales teams running high-volume cold outreach campaigns. Both are strong marketing automation tools — we recommend trying a trial of each before committing.
Mid-market B2B companies wanting dedicated marketing automation beyond email.
SDRs and sales teams running high-volume cold outreach campaigns.