Insights

Acquisition leverage Tessian has been acquired by Proofpoint, indicating a larger distribution network and potential cross-sell opportunities for Proofpoint's broader security and compliance solutions.

AI driven security Highlight Tessian's AI and behavioral data science approach as a differentiator to upsell advanced threat detection, data loss prevention, and in-the-moment security coaching to mid-market organizations seeking modern email protection.

Cloud email focus Position Tessian as a complementary layer to existing email infrastructure for enterprises using cloud suites, with expansion potential in Microsoft 365 environments via the recent add-in and Respond capabilities.

Growth traction Recent funding and recognition, including strong-forrester positioning and major funding milestones, signal credibility and buyer confidence favorable for enterprise-secured deals and faster sales cycles.

Expanded ecosystem Leverage partnerships and integration capabilities (HubSpot, AD, Looker, M365 add-in) to align with existing tech stacks, enabling joint-value selling with partners and broader cross-sell within Proofpoint’s customer base.

Similar companies to Tessian

Tessian Tech Stack

Tessian uses 8 technology products and services including HubSpot Analytics, Looker, Adobe Creative Cloud, and more. Explore Tessian's tech stack below.

Media & News

Tessian's Email Address Formats

Tessian uses at least 4 email formats:
Tessian Email FormatsExamplePercentage
First.Last@tessian.comJohn.Doe@tessian.com
88%
FLast@tessian.comJDoe@tessian.com
9%
First@tessian.comJohn@tessian.com
2%
FirstLast@tessian.comJohnDoe@tessian.com
1%

Frequently Asked Questions

What is Tessian's phone number?

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You can contact Tessian's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Tessian's official website and social media links?

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Tessian's official website is tessian.com and has social profiles on LinkedIn and Crunchbase.

How much revenue does Tessian generate?

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As of August 2026, Tessian's annual revenue is estimated to be $50M - $100M.

What is Tessian's NAICS code?

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Tessian's NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does Tessian have currently?

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As of August 2026, Tessian has approximately 41 employees across 4 continents, including Europe, North America and Asia. Key team members include Chief Product Officer: A. L., Head Of Marketing & Communications: K. H. and Head Of Communications & Content: L. B. Explore Tessian's employee directory with LeadIQ.

What industry does Tessian belong to?

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Tessian operates in the Computer and Network Security industry.

What technology does Tessian use?

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Tessian's tech stack includes HubSpot Analytics, Looker, Adobe Creative Cloud, Apache Spark, Ansible, Microsoft Active Directory, LinkedIn Sales Navigator and Moz.

What is Tessian's email format?

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Tessian's email format typically follows the pattern of First.Last@tessian.com. Find more Tessian email formats with LeadIQ.

How much funding has Tessian raised to date?

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As of August 2026, Tessian has raised $133M in funding. The last funding round occurred on Sep 21, 2021.

When was Tessian founded?

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Tessian was founded in 2013.
Tessian logo

Tessian

Computer and Network SecurityMassachusetts, United States11-50 Employees

Tessian offers a cloud-based email security platform that protects organizations from advanced email threats and data loss, while providing real-time guidance to users on security risks. It uses machine learning and behavioral data analysis to identify and stop threats that bypass traditional Secure Email Gateways, including phishing, business email compromise, accidental data exposure, and insider risk.

Based in Boston, Massachusetts, Tessian operates in the computer and network security field and traces its origins to 2013. It has been recognized as one of Fast Company's Most Innovative Companies for 2022. Tessian was acquired by Proofpoint, with the acquisition completed in 2023, integrating its capabilities into Proofpoint's cybersecurity offerings.

Section iconCompany Overview

Phone number
NAICS Code
5415 - Computer Systems Design and Related Services
Founded
2013
Employees
11-50

Section iconFunding & Financials

  • $133M

    Tessian has raised a total of $133M of funding over 10 rounds. Their latest funding round was raised on Sep 21, 2021 as a Non Equity Assistance.

  • $50M - $100M

    Tessian's revenue is estimated to be in the range of $50M - $100M

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