ActiveCampaign Acquires Postmark and DMARC Digests from Wildbit

DigiCert Acquires Valimail

September 16, 2025

Cybersecurity

DigiCert, backed by Clearlake Capital, Crosspoint Capital and TA Associates, has acquired Valimail, a leading provider of zero trust email authentication and DMARC-as-a-service. The deal adds email authentication capabilities to the DigiCert ONE platform, expands DigiCert into the $4B+ paid DMARC market, and brings Valimail's FedRAMP-authorized, cloud-native solutions and ~92,000 clients under DigiCert's digital trust portfolio.

DirectMail2.0 Acquires Who's Mailing What!

May 1, 2024

Marketing & Advertising

DirectMail2.0 has acquired Who's Mailing What!, a 40-year-old direct mail performance and insights tracking platform, to create the largest AI-powered direct mail database in the United States and accelerate its DM20.ai initiative. Both companies will continue to operate from Clearwater, Florida, with leadership changes at WMW to integrate the teams and scale the combined data and AI capabilities.

Pathwire Acquires Email on Acid

June 9, 2021

Cloud & SaaS

Pathwire has acquired Email on Acid to add industry-leading pre-deployment email testing and optimization tools to its email API and marketing product suite. The acquisition expands Pathwire’s end-to-end email capabilities, enabling customers of Mailgun and Mailjet to access instant email testing, content checks, and analytics as part of a more comprehensive ESP offering.

Architect Equity Acquires The Mail Group From bpost group

August 5, 2021

Logistics & Distribution

Architect Equity has acquired The Mail Group (TMG) from bpost group in a corporate divestiture. TMG is an asset-light third-party logistics provider offering full-service mail, packet, parcel and publication delivery across North America and globally; Architect plans to support the company's growth through operational and corporate-development resources.

Validity Acquires Litmus

April 10, 2025

Marketing & Advertising

Validity has completed the acquisition of Litmus, a leading provider of email optimization and pre-send testing solutions. The deal brings Litmus's pre-send capabilities together with Validity's post-send deliverability and data intelligence products to create a more comprehensive end-to-end email marketing platform; financial terms were not disclosed.

MessageBird Acquires SparkPost for $600M

April 28, 2021

Cloud & SaaS

MessageBird has entered into definitive documentation to acquire US-based SparkPost for $600 million, a deal intended to add industry-leading email sending and deliverability capabilities to MessageBird's omnichannel platform and expand its presence in the United States. The transaction was announced alongside an extension of MessageBird's Series C financing (bringing the round to ~$1B) backed by investors including Eurazeo, Tiger Global, Owl Rock and BlackRock.