Top 10 Master Inbox Competitors & Alternatives in 2026

Updated on 12/4/2025

Find more companies/brands/products like Master Inbox. We've shortlisted leading alternatives and mapped their strengths, pricing, and go-to-market focus.

Master Inbox

Best for SMBs

Est. 2025 • 1 employee • Private

Master Inbox is an AI-powered unified inbox and reply management platform that consolidates email and LinkedIn communications for lead generation agencies and GTM teams, with centralized workflows, client workspaces, and CRM integrations.

Starts at $199 / month

Has a free trial

Competitors

#1

SalesRobot

Best for SMBs
Est. 2021 • 11-50 employees • Private

SalesRobot is a sales engagement and LinkedIn/email outreach automation platform that uses AI to help B2B teams and agencies run personalized cold outreach campaigns and generate leads at scale.

Starts at $39 / account / month

Has a free trial
#2

Salesforge

Best for SMBs
Est. 2023 • 51-200 employees • Private

Salesforge is an AI-powered B2B cold outreach and sales engagement platform that lets teams run multi-channel email and LinkedIn campaigns with advanced personalization, deliverability infrastructure, and autonomous AI SDR agents.

Starts at $40 / month

Has a free trial
#3

Unibox

Best for SMBs
Est. 2025 • 11-50 employees • Private

Unibox is a SaaS platform that automates LinkedIn and email outreach with a unified inbox and AI-assisted messaging for sales teams, recruiters, and founders.

Starts at $59 / month

Has a free trial
#4

B2B Genie

Best for SMBs
Est. 2025 • 2-10 employees • Private

B2B Genie is an AI-driven B2B sales platform that acts as an always-on AI SDR, combining AI agents, a B2B leads database, and multichannel outreach to automate prospecting and demo booking for revenue teams.

Starts at $449 / month
#5

Klenty

Best for mid-market companies
Est. 2015 • 51-200 employees • Private

Sales engagement platform for outbound teams offering sequencing, analytics and CRM integrations to scale outreach and pipeline generation.

Starts at $50 / per user / month

Has a free trial
ChampSignal

Best for SMBs
Est. 2025 • 1 employee • Private

Get the insights your competitors don't want you to have. ChampSignal discovers, monitors, and analyzes your competitors. Like having a full-time competitive intelligence analyst.

Starts at $39 / month

Has a free trial

Generate My Report
#6

EmailBison

Best for SMBs
Est. 2024 • 1 employee • Private

EmailBison is a hosted private email sequencing platform for agencies and go-to-market teams, providing isolated infrastructure with dedicated IPs and tools to run high-volume outbound campaigns at scale.

Starts at $499 / month
#7

Smartlead

Best for SMBs
Est. 2022 • 11-50 employees • Private

Smartlead is a SaaS platform for AI-powered cold email outreach and deliverability, offering unlimited mailboxes, automated warmups, and a unified inbox for sales and marketing teams and agencies.

Starts at $39 / month

Has a free trial
#8

Instantly

Best for SMBs
Est. 2021 • 51-200 employees • Private

High-volume cold-email platform with built‑in warmup, deliverability tools and AI-assisted campaign automation.

Starts at $37 / month

Has a free trial
#9

Manyreach

Best for SMBs
Est. 2019 • 1 employee • Private

Manyreach is an AI-powered cold email outreach platform for agencies and sales teams that offers unlimited mailboxes and contacts on a pay-as-you-go credit model with a free 250-credit plan, was founded in 2019, and is operated by a small private team in Slovenia.

Starts at $0 / account

Has a free trial
#10

Saleshandy

Best for SMBs
Est. 2015 • 51-200 employees • Private

Saleshandy is a B2B cold email and sales engagement platform that combines lead finding, automated outreach, deliverability tools, and analytics to help businesses book more meetings and grow revenue.

Starts at $0 / account / month