G2

Georgios F.

CEO and Founder

Small-Business (50 or fewer emp.)

6/17/2026

"Powerful cold outreach tool with seamless API integration"

4.5/5

What do you like best about Mailshake?

What I like best about Mailshake is how straightforward it is to build and manage email sequences. No bloated interface, no unnecessary complexity. As an agency owner running cold outreach for clients, I need a tool that just works without a steep learning curve.

The full traceability across every sequence is what really stands out. I can see exactly when a lead was won, who is up next, and where every single contact stands in the pipeline at any given moment. That visibility alone saves a massive amount of time.

On top of that, the API integrations are genuinely impressive. Connecting Mailshake with our existing tech stack was seamless and opens up a lot of automation possibilities that most tools in this space just don't offer as cleanly. Review collected by and hosted on G2.com.

What do you dislike about Mailshake?

The only thing that mildly bothered me was that emails had to be set up separately within the sequences. There is no native way to duplicate or clone them easily, which adds unnecessary manual work, especially when running multiple similar campaigns. I ended up solving this through the API to automate the process, but a built-in duplicate function for emails would make the workflow significantly smoother for users who are not as technically inclined. Review collected by and hosted on G2.com.

What problems is Mailshake solving and how is that benefiting you?

Claude replied: Before Mailshake, we were manually tracking every cold outreach prospect in spreadsheets, which was chaotic and time-consuming. Since implementing it, we went from zero visibility to a fully structured outreach operation within days.

In our first active campaign targeting car workshops, we sent 59 emails and achieved a 54% open rate with 3 new leads generated. That kind of tracking and performance data in real time is exactly what we needed as an agency to manage client outreach professionally and at scale.

The core problem it solves is the chaos that comes with running multi-step cold email sequences across multiple prospects simultaneously. Mailshake centralizes everything so I always know who was contacted, when, and what happens next without spending hours on manual follow-up management. Review collected by and hosted on G2.com.