# Mailshake vs Seamless (formally Seamless.AI) Comparison
---
## AI Generated Summary
- **G2 reviewers report** that Mailshake excels in **ease of use** , with many users highlighting its quick learning curve and intuitive design. One user mentioned they could go from concept to campaign in just one day, making it a great choice for those who need to hit the ground running.
- **Users say** that Seamless (formally Seamless.AI) stands out for its **lead generation capabilities** , particularly with its user-friendly search filters and browser extension that simplifies the process of pulling contact information from company websites. This feature has been described as "heaven" for users needing quick access to leads.
- **Reviewers mention** that while Mailshake offers a powerful email campaign tool, it may not have the same depth of **data accuracy** as Seamless. Users of Seamless appreciate the high quality of phone numbers and emails, which is crucial for effective outreach.
- **According to verified reviews** , Mailshake's **customer support** receives high praise, with users noting quick email responses and effective AI support within the app. This level of support can be a significant advantage for users who may need assistance during their campaigns.
- **G2 reviewers highlight** that Seamless has a broader **market presence** and a larger user base, which can be beneficial for those looking for a well-established tool. With over 5,300 reviews, users feel more confident in the reliability and ongoing development of the software.
- **Users report** that Mailshake's focus on **campaign management** allows for unlimited campaigns and contacts, which is a major plus for small businesses looking to scale their outreach efforts without being bogged down by unnecessary features.




| | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Star Rating** | 4.7 out of 5 | 4.4 out of 5 | 
| **Total Reviews** | 376 | 5,395 | 
| **Largest Market Segment** | Small-Business (91.0% of reviews) | Small-Business (64.2% of reviews) | 
| **Entry Level Price** | $99.00 10 Mail Accounts Per Month | Free Trial | 

---
## Top Pros & Cons

### Mailshake

Pros:
- Ease of Use (35 reviews)
- Time-saving (26 reviews)

Cons:
- Missing Features (8 reviews)
- Integration Issues (5 reviews)

### Seamless (formally Seamless.AI)

Pros:
- Contact Information (1184 reviews)
- Ease of Use (1181 reviews)

Cons:
- Inaccurate Data (410 reviews)
- Outdated Contacts (295 reviews)

---
## Ratings Comparison
| Rating | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
  | **Meets Requirements** | 9.1 (270 reviews) | 8.4 (4810 reviews) | 
  | **Ease of Use** | 9.1 (279 reviews) | 8.8 (4955 reviews) | 
  | **Ease of Setup** | 9.0 (176 reviews) | 8.9 (3970 reviews) | 
  | **Ease of Admin** | 9.3 (102 reviews) | 8.7 (1265 reviews) | 
  | **Quality of Support** | 9.4 (248 reviews) | 8.5 (4246 reviews) | 
  | **Has the product been a good partner in doing business?** | 9.5 (94 reviews) | 8.5 (1260 reviews) | 
  | **Product Direction (% positive)** | 9.0 (263 reviews) | 8.7 (4823 reviews) | 

---
## Pricing

### Mailshake

#### Entry-Level Pricing

Plan: Sales Engagement

Price: $99.00 10 Mail Accounts Per Month

Key Features:
- 10 Email Addresses
- 5 Phone Numbers
- Power Phone Dialer

[Browse all 3 editions](https://www.g2.com/products/mailshake/pricing)

#### Free Trial

No

### Seamless (formally Seamless.AI)

#### Entry-Level Pricing

Plan: Free Trial

Price: Free Trial

Description: Get 50 Free Credits and Try it for Yourself! 

Key Features:
- Verified Emails, Cell Phones and Direct Dials For Everyone You Need to Sell to
- Download our Free Chrome Extension 
- Search Anywhere on the Web, Including LinkedIn Sales Navigator 

[Browse all 4 editions](https://www.g2.com/products/seamless-formally-seamless-ai/pricing)

#### Free Trial

Yes

---
## Features Comparison By Category

### Sales Intelligence

| Product | Score | Reviews |
|---|---|---|
| **Mailshake** | 7.5/10 | 18 |
| **Seamless (formally Seamless.AI)** | 7.8/10 | 3095 |

#### Additional Functionality

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Calendar Sync** | Not enough data | Not enough data | 
| **CRM** | Not enough data | Not enough data | 
| **Conversation Intelligence** | Not enough data | Not enough data | 
| **Lead Qualification** | Not enough data | Not enough data | 
| **Strategic Planning** | Not enough data | Not enough data | 
| **Customizable Reports** | Not enough data | Not enough data | 
| **Visual Analytics** | Not enough data | Not enough data | 
| **Customer Profiles** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **Contact Database** | Not enough data | Not enough data | 
| **Lead Scoring** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Data Cleansing** | Not enough data | Not enough data | 
| **Prospecting Tools** | Not enough data | 10.0 (13 reviews) | 
| **Sentiment Analysis** | Not enough data | Not enough data | 
| **Multi-Channel Data Collection** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Dashboard Creation** | Not enough data | Not enough data | 
| **Engagement Tracking** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Lead Generation** | Not enough data | 9.6 (8 reviews) | 
| **Interaction Tracking** | Not enough data | Not enough data | 
| **Predictive Analytics** | Not enough data | Not enough data | 
| **Customizable Templates** | Not enough data | Not enough data | 
| **Collaboration Tools** | Not enough data | Not enough data | 
| **For Sales Teams/Organizations** | Not enough data | Not enough data | 

#### Data Availability

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Contact Data Availability** | 7.7 (10 reviews) | 8.4 (3013 reviews) | 
| **Company Data Availability** | 7.8 (10 reviews) | 8.4 (2929 reviews) | 
| **Industry Research Availability** | 6.5 (9 reviews) | 8.0 (2825 reviews) ✓ Verified | 
| **Technographic Data Availability** | 6.7 (8 reviews) | 7.7 (2035 reviews) | 

#### Data Accuracy

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Contact Data Accuracy** | 7.4 (9 reviews) | 7.6 (2944 reviews) | 
| **Company Data Accuracy** | 7.0 (10 reviews) | 8.0 (2860 reviews) | 
| **Technographic Data Accuracy** | 7.1 (7 reviews) | 7.7 (2027 reviews) | 

#### Agentic AI - Sales Intelligence

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Autonomous Task Execution** | Not enough data | 6.3 (145 reviews) | 
| **Cross-system Integration** | Not enough data | 7.5 (144 reviews) | 
| **Adaptive Learning** | Not enough data | 6.3 (144 reviews) | 
| **Natural Language Interaction** | Not enough data | 6.4 (145 reviews) | 
| **Proactive Assistance** | Not enough data | 6.4 (145 reviews) | 
| **Decision Making** | Not enough data | 6.6 (146 reviews) | 
| **AI/Machine Learning** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Calendar/Reminder System** | Not enough data | Not enough data | 

#### Platform

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Internationalization** | 8.6 (14 reviews) | 7.7 (2289 reviews) | 
| **User, Role, and Access Management** | 9.0 (14 reviews) | 8.3 (2378 reviews) ✓ Verified | 
| **Performance and Reliability** | 9.0 (16 reviews) | 8.5 (2467 reviews) | 
| **Reporting/Dashboards** | 8.7 (15 reviews) | Feature Not Available | 
| **Mobile User Support** | 8.1 (14 reviews) | 7.5 (2237 reviews) ✓ Verified | 
| **APIs** | 7.8 (13 reviews) | 7.8 (2254 reviews) | 
| **Deal Management** | Not enough data | Not enough data | 
| **Sales Pipeline Management** | Not enough data | Not enough data | 
| **Lead Management** | Not enough data | Not enough data | 
| **Contact Management** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Territory Management** | Not enough data | Not enough data | 
| **Sales Activity Management** | Not enough data | Not enough data | 

#### Features

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Lead Builder** | 7.7 (10 reviews) | 8.4 (2793 reviews) | 
| **Integration to CRM/Marketing Automation** | 6.3 (9 reviews) | 8.2 (2707 reviews) | 
| **Data Cleaning/Enrichment** | 8.3 (11 reviews) | 7.8 (2674 reviews) ✓ Verified | 
| **Data Segmentation/Filtering** | 6.7 (10 reviews) | 8.0 (2700 reviews) ✓ Verified | 
| **Search** | 7.2 (10 reviews) | 8.5 (2880 reviews) ✓ Verified | 
| **News/People Alerts** | 6.3 (10 reviews) | 7.2 (2519 reviews) ✓ Verified | 
| **Connections** | 6.1 (9 reviews) | 7.7 (2592 reviews) ✓ Verified | 
| **Reporting** | 7.8 (9 reviews) | Feature Not Available | 
| **Messaging** | 8.5 (8 reviews) | Feature Not Available | 
| **Real-Time Data** | Not enough data | Not enough data | 
| **Intent Data** | Not enough data | Not enough data | 
| **Sales Automation** | Not enough data | Not enough data | 
| **Email Marketing** | Not enough data | Not enough data | 
| **Real-Time Reporting** | Not enough data | Not enough data | 

### Lead Generation

| Product | Score | Reviews |
|---|---|---|
| **Mailshake** | N/A | N/A |
| **Seamless (formally Seamless.AI)** | N/A | N/A |

#### Lead Generation

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Lead Builder** | Not enough data | Not enough data | 
| **CRM Integration** | Not enough data | Not enough data | 
| **Marketing Automation Integration** | Not enough data | Not enough data | 
| **Social Media Integration** | Not enough data | Not enough data | 
| **Data Import & Export Tools** | Not enough data | Not enough data | 

### Sales Engagement

| Product | Score | Reviews |
|---|---|---|
| **Mailshake** | 7.7/10 | 195 |
| **Seamless (formally Seamless.AI)** | N/A | N/A |

#### Integrated Workflows

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Task Management** | 8.3 (133 reviews) ✓ Verified | Not enough data | 
| **Email Tracking/Automation** | 9.2 (188 reviews) ✓ Verified | Not enough data | 
| **Calls and Voice** | 7.5 (92 reviews) | Not enough data | 
| **Other Outreach Options ** | 7.9 (121 reviews) | Not enough data | 
| **CRM Integration** | 8.2 (124 reviews) ✓ Verified | Not enough data | 
| **Calendar** | 8.0 (112 reviews) | Not enough data | 
| **Shared Records** | 8.0 (109 reviews) | Not enough data | 
| **Business Process Automation** | Not enough data | Not enough data | 
| **Performance Management** | Not enough data | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Sales Pipeline Management** | Not enough data | Not enough data | 
| **Communication Management** | Not enough data | Not enough data | 
| **Campaign Management** | Not enough data | Not enough data | 

#### Repeatability and Reportability

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Content Management** | 8.3 (122 reviews) | Not enough data | 
| **Workflow Management** | 8.6 (142 reviews) ✓ Verified | Not enough data | 
| **Workflow Performance** | 8.7 (111 reviews) | Not enough data | 
| **Sales Coaching and Insights** | Feature Not Available | Not enough data | 
| **Gamification** | 7.2 (100 reviews) | Not enough data | 

#### AI and Automation

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Lead Prioritization** | 8.1 (124 reviews) | Not enough data | 
| **Lead Scoring** | 8.1 (117 reviews) | Not enough data | 
| **Best Time of Day Scheduling** | 8.5 (131 reviews) | Not enough data | 
| **Buyer Intelligence** | 7.7 (105 reviews) | Not enough data | 
| **Machine Learning** | 7.5 (107 reviews) | Not enough data | 

#### Generative AI

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **AI Text Generation** | 7.3 (55 reviews) | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Lead Generation** | Not enough data | Not enough data | 

#### Agentic AI - Sales Engagement

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Autonomous Task Execution** | 6.8 (20 reviews) | Not enough data | 
| **Multi-step Planning** | 6.9 (20 reviews) | Not enough data | 
| **Cross-system Integration** | 7.0 (20 reviews) | Not enough data | 
| **Adaptive Learning** | 6.6 (20 reviews) | Not enough data | 
| **Natural Language Interaction** | 6.7 (20 reviews) | Not enough data | 
| **Proactive Assistance** | 6.4 (19 reviews) | Not enough data | 
| **Decision Making** | 6.3 (20 reviews) | Not enough data | 
| **Strategic Planning** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Prospecting Tools** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Auto-Dialer** | Not enough data | Not enough data | 
| **For Sales Teams/Organizations** | Not enough data | Not enough data | 

### Buyer Intent Data Providers

| Product | Score | Reviews |
|---|---|---|
| **Mailshake** | N/A | N/A |
| **Seamless (formally Seamless.AI)** | 8.2/10 | 775 |

#### Data Availability

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Contact Data Availability** | Not enough data | 8.5 (768 reviews) | 
| **Account Data Availability** | Not enough data | 8.4 (765 reviews) | 
| **Offline Data** | Not enough data | Feature Not Available | 
| **Real-Time Data** | Not enough data | Not enough data | 
| **Intent Data** | Not enough data | Not enough data | 

#### Platform Additional Functionality

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Third-Party Integrations** | Not enough data | 8.4 (749 reviews) | 
| **Topic Customization** | Not enough data | 8.2 (727 reviews) | 
| **Natural Language Processing (NLP)** | Not enough data | 8.0 (713 reviews) | 
| **Alerts** | Not enough data | 7.8 (710 reviews) | 
| **Real-time Intent** | Not enough data | 7.9 (718 reviews) | 

#### Additional Functionality

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Event Triggered Actions** | Not enough data | Not enough data | 
| **Lead Generation** | Not enough data | Not enough data | 
| **Lead Notifications** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Lead Capture** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Customer Journey Mapping** | Not enough data | Not enough data | 
| **Real-Time Reporting** | Not enough data | Not enough data | 
| **Lead Qualification** | Not enough data | Not enough data | 
| **Multi-Channel Attribution** | Not enough data | Not enough data | 
| **Customer Segmentation** | Not enough data | Not enough data | 
| **Database Support** | Not enough data | Not enough data | 
| **Summary Reports** | Not enough data | Not enough data | 
| **Prioritization** | Not enough data | Not enough data | 
| **Pipeline Management** | Not enough data | Not enough data | 
| **Customizable Reports** | Not enough data | Not enough data | 
| **Conversion Rate Optimization** | Not enough data | Not enough data | 
| **Customer Database** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Trend Analysis** | Not enough data | Not enough data | 
| **Lead Management** | Not enough data | Not enough data | 
| **Performance Metrics** | Not enough data | Not enough data | 
| **Content Marketing** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **B2B Lead Generation** | Not enough data | Not enough data | 
| **Real-Time Updates** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Web Traffic Reporting** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Customer Activity Tracking** | Not enough data | Not enough data | 
| **Behavior Tracking** | Not enough data | Not enough data | 
| **Competitive Analysis** | Not enough data | Not enough data | 
| **Predictive Analytics** | Not enough data | Not enough data | 
| **Contact Database** | Not enough data | Not enough data | 
| **Sales Management** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Built-In Database** | Not enough data | Not enough data | 
| **Real-Time Notifications** | Not enough data | Not enough data | 
| **CRM** | Not enough data | Not enough data | 
| **Contact Management** | Not enough data | Not enough data | 
| **Real-Time Analytics** | Not enough data | Not enough data | 
| **Data Visualization** | Not enough data | Not enough data | 
| **Lead Nurturing** | Not enough data | Not enough data | 
| **Sales Trend Analysis** | Not enough data | Not enough data | 
| **Pipeline Reports** | Not enough data | Not enough data | 
| **Customer Profiles** | Not enough data | Not enough data | 

### Lead Intelligence

| Product | Score | Reviews |
|---|---|---|
| **Mailshake** | N/A | N/A |
| **Seamless (formally Seamless.AI)** | 8.2/10 | 3251 |

#### Lead Intelligence

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Lead Validation** | Not enough data | 8.0 (3159 reviews) | 
| **Lead Enrichment** | Not enough data | 8.0 (3096 reviews) | 
| **Lead Quality** | Not enough data | 7.9 (3186 reviews) | 
| **Lead Analysis** | Not enough data | 7.8 (3039 reviews) | 
| **Browser Extension** | Not enough data | 8.6 (3112 reviews) | 

#### Agentic AI - Lead Intelligence

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Cross-system Integration** | Not enough data | 8.6 (92 reviews) | 

### Lead Capture

| Product | Score | Reviews |
|---|---|---|
| **Mailshake** | N/A | N/A |
| **Seamless (formally Seamless.AI)** | 9.2/10 | 46 |

#### Lead Monitoring

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Features** | Not enough data | 9.4 (41 reviews) | 
| **Performance** | Not enough data | 9.3 (38 reviews) | 
| **Identification** | Not enough data | 9.1 (40 reviews) | 
| **Lead Capture** | Not enough data | Not enough data | 

#### Agentic AI - Lead Capture

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Cross-system Integration** | Not enough data | 9.2 (33 reviews) | 
| **Proactive Assistance** | Not enough data | 8.8 (32 reviews) | 

#### Data Capture

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Mobile** | Not enough data | 9.0 (38 reviews) | 
| **Websites** | Not enough data | 9.2 (38 reviews) | 
| **Social Media** | Not enough data | 8.9 (39 reviews) | 
| **Data** | Not enough data | 9.3 (38 reviews) | 

#### Analytics

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Export/Import** | Not enough data | 9.3 (36 reviews) | 
| **Reporting** | Not enough data | 9.2 (37 reviews) | 

#### Customization

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Web Forms** | Not enough data | 9.1 (36 reviews) | 
| **Personalization** | Not enough data | 9.2 (36 reviews) | 
| **Templates** | Not enough data | 9.1 (35 reviews) | 
| **Integration** | Not enough data | 9.3 (35 reviews) | 
| **Social Media Integration** | Not enough data | Not enough data | 
| **Customizable Forms** | Not enough data | Not enough data | 
| **Customizable Templates** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Lead Segmentation** | Not enough data | Not enough data | 
| **Conversion Tracking** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **A/B Testing** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Pipeline Management** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Multi-Campaign** | Not enough data | Not enough data | 
| **Prospecting Tools** | Not enough data | Not enough data | 
| **Customizable Fields** | Not enough data | Not enough data | 
| **Lead Distribution** | Not enough data | Not enough data | 
| **Event Triggered Actions** | Not enough data | Not enough data | 
| **Engagement Tracking** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Chat/Messaging** | Not enough data | Not enough data | 
| **CRM** | Not enough data | Not enough data | 
| **Email Marketing** | Not enough data | Not enough data | 
| **Template Management** | Not enough data | Not enough data | 
| **Lead Nurturing** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **Contact Management** | Not enough data | Not enough data | 
| **Contact Database** | Not enough data | Not enough data | 
| **Email Management** | Not enough data | Not enough data | 
| **Real-Time Notifications** | Not enough data | Not enough data | 
| **Customer Segmentation** | Not enough data | Not enough data | 
| **Surveys & Feedback** | Not enough data | Not enough data | 
| **Campaign Management** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **Data Extraction** | Not enough data | Not enough data | 
| **Lead Notifications** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **Dashboard** | Not enough data | Not enough data | 
| **Business Card/Badge Scanning** | Not enough data | Not enough data | 
| **Lead Generation** | Not enough data | Not enough data | 
| **Customer Database** | Not enough data | Not enough data | 
| **Autoresponders** | Not enough data | Not enough data | 
| **Lead Qualification** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Forms Management** | Not enough data | Not enough data | 
| **Visitor Tracking** | Not enough data | Not enough data | 
| **Lead Management** | Not enough data | Not enough data | 
| **Campaign Analytics** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **Campaign Planning** | Not enough data | Not enough data | 
| **Lead Scoring** | Not enough data | Not enough data | 
| **Email Tracking** | Not enough data | Not enough data | 
| **Drip Campaigns** | Not enough data | Not enough data | 
| **Campaign Segmentation** | Not enough data | Not enough data | 
| **Lead Verification/Validation** | Not enough data | Not enough data | 
| **Source Tracking** | Not enough data | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Reminders** | Not enough data | Not enough data | 
| **Interaction Tracking** | Not enough data | Not enough data | 
| **Opportunity Management** | Not enough data | Not enough data | 
| **Sales Reports** | Not enough data | Not enough data | 
| **Document Storage** | Not enough data | Not enough data | 
| **Sales Trend Analysis** | Not enough data | Not enough data | 
| **Monitoring** | Not enough data | Not enough data | 
| **For Sales Teams/Organizations** | Not enough data | Not enough data | 
| **Sales Forecasting** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Task Management** | Not enough data | Not enough data | 

---
## Categories
**Shared Categories (1):** [Sales Intelligence Software](https://www.g2.com/categories/sales-intelligence)

**Unique to Mailshake (1):** [Sales Engagement Software](https://www.g2.com/categories/sales-engagement)

**Unique to Seamless (formally Seamless.AI) (3):** [Lead Intelligence Software](https://www.g2.com/categories/lead-intelligence), [Buyer Intent Data Providers](https://www.g2.com/categories/buyer-intent-data-providers), [Lead Capture Software](https://www.g2.com/categories/lead-capture)


---
## Reviewer Demographics

### By Company Size

| Segment | Mailshake | Seamless (formally Seamless.AI) | 
|---|---|---|
| **Small-Business** | 91.0% | 64.2% | 
| **Mid-Market** | 8.2% | 29.1% | 
| **Enterprise** | 0.8% | 6.8% | 

### By Industry

#### Mailshake

- **Marketing and Advertising:** 28.2%
- **Computer Software:** 10.5%
- **Information Technology and Services:** 9.7%
- **Financial Services:** 3.3%
- **Consulting:** 2.8%
- **Internet:** 2.2%
- **Real Estate:** 2.2%
- **Education Management:** 1.9%
- **Entertainment:** 1.7%
- **Staffing and Recruiting:** 1.7%
- **Other:** 35.9%

#### Seamless (formally Seamless.AI)

- **Information Technology and Services:** 14.1%
- **Computer Software:** 12.7%
- **Marketing and Advertising:** 11.6%
- **Consulting:** 4.2%
- **Staffing and Recruiting:** 4.0%
- **Financial Services:** 3.6%
- **Logistics and Supply Chain:** 2.7%
- **Telecommunications:** 2.1%
- **Computer & Network Security:** 2.0%
- **Manufacturing:** 2.0%
- **Other:** 41.0%

---
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- [Salesloft](https://www.g2.com/products/salesloft/reviews) — 4.5/5 stars (9861 reviews)
- [HubSpot Sales Hub](https://www.g2.com/products/hubspot-sales-hub/reviews) — 4.4/5 stars (14302 reviews)
- [Instantly](https://www.g2.com/products/instantly/reviews) — 4.8/5 stars (4156 reviews)
- [lemlist](https://www.g2.com/products/lemlist/reviews) — 4.6/5 stars (2179 reviews)

### Alternatives to Seamless (formally Seamless.AI)

- [Apollo.io](https://www.g2.com/products/apollo-io/reviews) — 4.7/5 stars (9825 reviews)
- [GTM Workspace - Powered by ZoomInfo](https://www.g2.com/products/gtm-workspace-powered-by-zoominfo/reviews) — 4.5/5 stars (9144 reviews)
- [Lusha](https://www.g2.com/products/lusha/reviews) — 4.3/5 stars (1668 reviews)
- [SalesIntel](https://www.g2.com/products/salesintel/reviews) — 4.3/5 stars (540 reviews)
- [RocketReach](https://www.g2.com/products/rocketreach/reviews) — 4.4/5 stars (1384 reviews)
- [LeadIQ](https://www.g2.com/products/leadiq/reviews) — 4.2/5 stars (1185 reviews)
- [6sense Sales Intelligence](https://www.g2.com/products/6sense-sales/reviews) — 4.0/5 stars (1075 reviews)
- [UpLead](https://www.g2.com/products/uplead/reviews) — 4.7/5 stars (831 reviews)
- [Lead411](https://www.g2.com/products/lead411/reviews) — 4.5/5 stars (482 reviews)
- [Clearbit](https://www.g2.com/products/clearbit/reviews) — 4.4/5 stars (633 reviews)

---
## Top Discussions

### Mailshake

- Title: [How much does Mailshake cost?](https://www.g2.com/discussions/how-much-does-mailshake-cost) — 3 comments
  > **Top comment:** "You'll have to visit their website milkshake.com for their current pricing"
- Title: [What is Lemlist?](https://www.g2.com/discussions/what-is-lemlist) — 2 comments *(includes official response)*
  > **Top comment:** "While Mailshake and Lemlist have some similar functionality, we can only speak for our successful customers here at Mailshake who love our simple-to-use..."
- Title: [How do you use Mailshake?](https://www.g2.com/discussions/how-do-you-use-mailshake) — 2 comments, 1 upvote *(includes official response)*
  > **Top comment:** "Mailshake is designed to be easy to use and setup. We've actually outlined everything you need to get setup and start sending your first campaign. Check out..."
- Title: [What is Mailshake used for?](https://www.g2.com/discussions/what-is-mailshake-used-for) — 1 comment
  > **Top comment:** "Cold outreach "
- Title: [What does Mailshake do?](https://www.g2.com/discussions/what-does-mailshake-do) — 1 comment
  > **Top comment:** "Allows you to send to many people in a list from your gmail."

### Seamless (formally Seamless.AI)

- Title: [What is Seamless.ai used for?](https://www.g2.com/discussions/what-is-seamless-ai-used-for) — 4 comments, 2 upvotes
  > **Top comment:** "Finding leads across various industries. Their technology, only 30% accurate, in my experience, delivers phone numbers and email for cold sales calls...."
- Title: [What does seamless AI do?](https://www.g2.com/discussions/what-does-seamless-ai-do) — 4 comments
  > **Top comment:** "Seamless AI helps me find the right team members to contact, also it gives me a overview of the other co-works that can also be very helpful. "
- Title: [Is anyone else having problems with email accuracy (bounce) levels?](https://www.g2.com/discussions/is-anyone-else-having-problems-with-email-accuracy-bounce-levels) — 2 comments, 1 upvote
  > **Top comment:** "Yes I have that problem. I create my list and then run it through third party email verification services. I use a service I found on Fiverr. Very cheap...."
- Title: [How do you narrow down geography in the Seamless Ai application](https://www.g2.com/discussions/42938-how-do-you-narrow-down-geography-in-the-seamless-ai-application) — 2 comments, 2 upvotes
  > **Top comment:** "Radius"
- Title: [When will seamless create API to MS Dynamics CRM?](https://www.g2.com/discussions/35790-when-will-seamless-create-api-to-ms-dynamics-crm) — 2 comments, 2 upvotes *(includes official response)*
  > **Top comment:** "Greg - We recently launched our MS Dynamics native integration. Set it up here: https://login.seamless.ai/settings/connected-apps"

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/mailshake-vs-seamless-formally-seamless-ai)