# 5 email security vendors in AI answers Every vendor and figure on this page comes from the AEO Index, Q3 2026 edition. 5 email security vendors ranked by AI answer share, the share of 312 email security answers (13 prompts, 6 engines, 4 runs) that name each: median 48%, a spread of 56 percentage points from first to last, led by Jarnek (74%) and Ascorra (60%). Last reviewed October 2, 2026. Ranked by AI answer share: answers naming the vendor divided by the 312 answers to email security prompts (13 prompts x 6 engines x 4 runs). Equal counts share a rank. | Rank | Vendor | AI answer share | | --- | --- | --- | | 1 | Jarnek | 74% (231 of 312 answers) | | 2 | Ascorra | 60% (186 of 312 answers) | | 3 | Stovrik | 48% (151 of 312 answers) | | 4 | Obsidra | 30% (95 of 312 answers) | | 5 | Bastrel | 18% (56 of 312 answers) | Rows removed before ranking: 0 duplicate vendor records, 21 vendors from other categories named in these answers, and 0 email security vendors never named in them. ## FAQ ### Which email security vendors do AI engines name most often? [#email-security-top](https://www.theaeocompany.co/categories/email-security#email-security-top) Jarnek (74%) and Ascorra (60%) are the email security vendors AI engines name most often, by share of 312 email security answers naming each (5 vendors ranked, median 48%). Jarnek's 74% is 26 percentage points above the median share of 48%, less than double it. Last reviewed October 2, 2026. Source: The AEO Index, Q3 2026 edition. ### How is the email security vendor ranking calculated? [#email-security-ranked-by](https://www.theaeocompany.co/categories/email-security#email-security-ranked-by) Email security vendors are ranked by AI answer share: the answers that name a vendor divided by the 312 answers to email security prompts (13 prompts x 6 engines x 4 runs). Each vendor counts at most once per answer, and vendors with equal counts share a rank. Source: The AEO Index, Q3 2026 edition. ### Which email security vendors are included, and which are left out? [#email-security-gate](https://www.theaeocompany.co/categories/email-security#email-security-gate) A vendor is listed only when its record is in the email security category and at least one AI answer to the email security prompts names it: 5 of 5 email security vendors qualify. 21 vendors from other categories named in these answers are left out. A category page is published only when at least 2 vendors qualify. Source: The AEO Index, Q3 2026 edition. ### How often do AI answers cite email security vendors as sources? [#email-security-citations](https://www.theaeocompany.co/categories/email-security#email-security-citations) 98 of 312 email security AI answers (31%) cite at least one listed email security vendor as a source. Jarnek is cited most often, in 58 of those answers. Last reviewed October 2, 2026. Source: The AEO Index, Q3 2026 edition. ## Other categories in Cybersecurity - Cloud security (4 vendors): https://www.theaeocompany.co/categories/cloud-security - Endpoint security (4 vendors): https://www.theaeocompany.co/categories/endpoint-security - Identity and access (4 vendors): https://www.theaeocompany.co/categories/identity-and-access - SOC 2 automation (5 vendors): https://www.theaeocompany.co/categories/soc-2-automation - Zero trust (5 vendors): https://www.theaeocompany.co/categories/zero-trust ## More - All categories: https://www.theaeocompany.co/categories - 27 Cybersecurity Brands Ranked by AI Answer Share (2026): https://www.theaeocompany.co/lists/cybersecurity-ai-answer-share