GetApp offers objective, independent research and verified user reviews. We may earn a referral fee when you visit a vendor through our links.

Our commitment

Independent research methodology

Our researchers use a mix of verified reviews, independent research, and objective methodologies to bring you selection and ranking information you can trust. While we may earn a referral fee when you visit a provider through our links or speak to an advisor, this has no influence on our research or methodology.

Learn more

Verified user reviews

GetApp maintains a proprietary database of millions of in-depth, verified user reviews across thousands of products in hundreds of software categories. Our data scientists apply advanced modeling techniques to identify key insights about products based on those reviews. We may also share aggregated ratings and select excerpts from those reviews throughout our site.

Our human moderators verify that reviewers are real people and that reviews are authentic. They use leading tech to analyze text quality and to detect plagiarism and generative AI.

Learn more

How GetApp ensures transparency

GetApp lists all providers across its website—not just those that pay us—so that users can make informed purchase decisions. GetApp is free for users. Software providers pay us for sponsored profiles to receive web traffic and sales opportunities. Sponsored profiles include a link-out icon that takes users to the provider’s website.

Learn more

Mailshake vs GMass Comparison (2026)

Add to Compare

Compare similar apps

Gmail

4.8

Brevo

4.6

MailerLite

4.7

Good recommendations?

Mailshake

GMass

Overview

Mailshake is a sales engagement platform for modern sales teams. Send personalized cold emails at scale and set tasks to engage with prospects via phone and social media, all in one sequence, on one dashboard.

GMass is a Google Chrome extension, which helps businesses run mass email campaigns from Gmail, manage responses, create recipient lists, and more. Supervisors can gain visibility into sent, opened, clicked, replied, unsubscribed, bounced, and rejected email metrics through reports.

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Video & Screenshots

Pricing

Starting from

/user

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

Starting from

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

User reviews

4.6

161

124

Value for money

Ease of use

Features

Customer support

86%

would recommend this app

4.8

1.4K

1.2K

201

Value for money

Ease of use

Features

Customer support

93%

would recommend this app

Pros

“The ability to upload HTML templates has allowed us to create beautiful, branded emails that stand out, and the campaign tracking tools make it easy to see what’s performing best.”

Sabine F.

Principal

“The email scheduling is reliable and the software allows you to ensure email deliverability and reduces your spam rate.”

Andrew W.

Owner

“Campaign setup, inbox management, and basic data handling are straightforward, which makes it practical for day-to-day outbound work.”

Kristina B.

Email Marketing Manager

Pros

“It's a reliable and easy-to-use email marketing tool that integrates seamlessly with Gmail, making it simple to create, personalize, schedule, and track campaigns without switching platforms.”

Saksham K.

Marketing manager

“It makes email outreach much easier by allowing me to manage campaigns directly from Gmail, schedule emails, track open rates, and automate follow-ups.”

Karthikeya S.

Admin

“I was able to send over 300 emails and landed an agent along with 250 emails for a campaign pitch and allowed me to make each email individualized.”

Jackie P.

Model and Creative Director

Cons

“A/B testing can be a bit confusing, as when we try to move a contact from A to B, it always gives an error. And when we add new contacts to a campaign using an Excel contact list, sometimes some contacts are missing.”

Emilaine C.

Business Development and Sales

“It can cause a bit of confusion when managing contacts.”

Paula S.

Senior SEO Outreach Executive

“Not really a con, but it doesn’t have as many features as some other platforms. Like you can’t source leads or do deep prospecting inside the tool itself.”

Dane B.

CEO

Cons

“The sequence logic is less sophisticated than what I had access to in Intercom Series previously, but that's an unfair comparison given the price difference.”

Rene B.

Partner

“There are limitations in email template customization, a potential learning curve due to its feature-rich interface, deliverability issues related to its reliance on Gmail's infrastructure, and a lack of built-in CRM functionalities”

Joseph C.

Director of Operations

“No matter what tool you use, failing to warm up your domain and validate your email list will ruin your sender reputation.”

Narayan S.

Digital Marketing Consultant