Inbox Monster Launches 56M-Email Research Suite for Brands
Inbox Monster launches a research suite with 56 million indexed emails. Email marketers can study competitor sending strategies and inbox placement patterns.
Email marketing just got a powerful new research tool. Inbox Monster, an email deliverability and testing platform, has launched a Research Suite giving marketers searchable access to more than 56 million emails from 10,000 major brands. The company says teams can now study what competitors are actually sending, in near-real time.
The announcement, made on May 11, 2026, is the latest sign that email is being treated as a serious strategic channel, not an afterthought. As email continues to deliver returns of US$36 to US$42 for every dollar spent, outperforming paid search, social ads, and display advertising combined, the tools supporting it are growing more sophisticated to match.
Searching by Domain or Subject Line
At the core of the new suite is a feature called Monster Search. It lets email teams look up any brand's sending history by company domain or by keywords in subject lines. For each domain, the tool surfaces forecasted send volume, average inbox placement rates across different email providers, typical subject line length, and popular send times.
Mission MediaThe second feature, Monster Boards, lets teams save emails into shared collections for campaign planning and stakeholder alignment. It targets a common pain point: getting creative teams, strategists, and decision-makers onto the same page before a campaign goes out.
"Epic emails don't happen by accident. They start with great research," said Matt McFee, Managing Director of Inbox Monster. "Our Research Suite was built to inspire big ideas and turn marketers' hypotheses into high-performing campaigns."
Looking for World-Class PR & Comms in APAC?
Tailored service packages for select brands and agencies.
Completing a Full Email Workflow
Inbox Monster has positioned the Research Suite as the first step in a three-part workflow. Marketers can now study the competitive landscape using the Research Suite, run quality assurance on their own emails with the Creative Suite, then measure campaign performance with the Deliverability Suite. The company argues this end-to-end approach sets it apart from competitors that cover only parts of the process.
The competitive email intelligence space already includes MailCharts, which covers more than 30,000 brands at US$149 per month, and Owletter, which starts at US$19 per month. Inbox Monster's 56 million message corpus is substantially larger than either, and its integration with tools like Salesforce Marketing Cloud via AppExchange extends its reach into enterprise teams.
Email Growth in Asia-Pacific
For marketing leaders in Asia-Pacific, the timing is relevant. Email send volumes among APAC brands rose 44.1% in 2026, and the region records the highest SMS click rates globally at 32.4%, compared to a global average of 25.7%. As email and SMS increasingly run together in regional campaigns, intelligence tools covering both channels become more valuable.
Mission MediaThe broader shift is also notable. Adoption of commercial competitive intelligence tools among technology and service providers is projected to reach 40% by 2026, up from roughly 10% just a few years ago. Email research databases are part of that trend.
Inbox Monster will be demonstrating the Research Suite at Inbox Expo in Atlanta, Salesforce Connections in Chicago, Iterable's Activate Tour in London, and Movable Ink's Think Summit in New York.
Want to reach thousands of marketing and comms professionals across Asia?
Get your brand in front of industry decision-makers.
Partner with Mission Media →
