Email Marketing Service: AI Visibility Market Discovery Index

Benchmark Summary

Questions This Section Answers

• Which brand led the Email Marketing Service category, and by how much did the top two separate?
• What were the largest recommendation coverage gain and decline between July and October 2026?

Brevo led the Email Marketing Service category with a valid recommendation coverage of 70.7% in October 2026, down from 69.7% in July 2026. ActiveCampaign held second place at 68.3% in October 2026, up from 67.0% in July 2026, a spread of 2.4 points between the top two brands.

The largest coverage increase belonged to Kit (ConvertKit), which rose to 44.0% in October 2026 from 37.1% in July 2026. HubSpot Live Chat also rose significantly, from a baseline of 0.0% to 29.8% in October 2026, having entered the tracked series in September 2026. The largest coverage decline belonged to HubSpot Service Hub, which recorded no qualified observations in October 2026, down from 50.3% in July 2026.

The benchmark produced 477 qualified observations in October 2026, down from 525 in July 2026, reflecting a continued reduction in sample size across the series. The tracked brand set now includes HubSpot Live Chat, which joined in September 2026, while HubSpot Service Hub, previously tracked at 50.3% in July 2026 and 51.4% in August 2026, recorded no presence in the September and October 2026 samples.

Current Benchmark at a Glance

Qualified surface breadth counts the canonical AI/search surface families with at least one qualified observation: ChatGPT, Copilot, Gemini, Perplexity, AI Overviews, and AI Mode. All six families were represented in both July and October 2026.

For the strategic interpretation of this benchmark, read CiteWorks Studio's analysis of How AI Search Is Recommending Email Marketing Service

Research Scope and Qualification

The public benchmark is narrower than the raw collection universe by design.

Brand-level percentages use the qualified observations as the public denominator, not the raw collection. The August 2026 sample produced 545 qualified observations and the September 2026 sample produced 502 qualified observations from 800 source prompt-surface observations in each month. Link to AI Visibility Market Discovery Methodology.

Current Brand Standings

Questions This Section Answers

• Which brands lead the Email Marketing Service category by valid recommendation coverage?
• How do top-three and rank-one rates differ among Brevo, ActiveCampaign, Klaviyo, and Mailchimp?

This table is the primary current-month benchmark view, sorted by valid recommendation coverage.

How to Read the Standings

• Presence rate: the share of qualified observations in which the brand is mentioned at all, in any context.
• Valid recommendation coverage: the share of qualified observations in which the brand appears in a valid recommendation shortlist.
• Top-three rate: the share of qualified observations in which the brand appears in the first three recommendation positions.
• Rank-one rate: the share of qualified observations in which the brand is the first recommendation.
• Net sentiment: the balance of positive over negative mentions, from 0 to 1.

For formulas and denominator rules, see AI Visibility Market Discovery Metric Definitions.

Recommendation Coverage Movement

Questions This Section Answers

• Which email marketing brands gained the most valid recommendation coverage since July 2026?
• Which brands lost recommendation coverage, and how large were those declines?

The October 2026 sample saw HubSpot Live Chat, which entered the tracked series in September 2026 at 48.4% coverage, decline to 29.8% in October 2026, a decrease of 18.6 points from the prior month. Brevo declined 2.2 points from September 2026 to October 2026, from 72.9% to 70.7%.

Largest Increase: Kit (ConvertKit)

Kit (ConvertKit) rose to 44.0% valid recommendation coverage in October 2026, up from 37.1% in July 2026. This represents a significant increase over the baseline. The brand's presence rate increased from 41.3% in July 2026 to 51.8% in October 2026, and its top-three rate rose from 8.0% to 14.1% in the same period. Kit (ConvertKit) recorded a rank-one rate of 2.3% in October 2026, up from 0.0% in July 2026.

Largest Decline: HubSpot Service Hub

HubSpot Service Hub recorded no qualified observations in October 2026, down from 50.3% valid recommendation coverage in July 2026. The brand previously held 51.4% coverage in August 2026 and subsequently recorded no presence in the September and October 2026 samples. HubSpot Service Hub does not appear as a tracked company in the October 2026 sample.

Category Leader: Brevo

Brevo led the category for the fourth consecutive tracked month with valid recommendation coverage of 70.7% in October 2026, up from 69.7% in July 2026. The brand's presence rate also increased, from 83.2% in July 2026 to 85.5% in October 2026. Its top-three rate rose from 27.4% to 27.7% in the same period, while its rank-one rate increased from 7.2% to 7.5%.

AWeber: Current Position

AWeber recorded valid recommendation coverage of 2.7% in October 2026, up from 1.9% in July 2026 — an increase of 0.8 points, but the lowest valid recommendation coverage among all ten tracked brands. Its presence rate stood at 4.8%, its top-three rate at 0.8%, its rank-one rate at 0.4%, and its net sentiment at 0.8 in October 2026.

Brevo records 70.7% on valid recommendation coverage, while AWeber stands at 2.7%. The more important issue is what that gap means for AWeber's recommendation position: even against Mailchimp, which ranks fourth in the category at 60.2% valid recommendation coverage, AWeber trails by 57.5 points. AWeber's rank-one rate of 0.4% also sits far below Mailchimp's category-leading 21.8%, meaning that even in the narrow set of qualified observations where AWeber is mentioned at all, it is rarely positioned as a first-choice recommendation. This is a material recommendation gap, not a marginal one, and it has persisted across the tracked period even as the brand's coverage ticked upward by less than a point.

Highest-priority diagnostic: What is preventing AWeber's 4.8% presence rate from converting into valid recommendation coverage closer to category peers, and what would need to change for AWeber to close the gap against leaders such as Brevo and ActiveCampaign?

Recommendation Placement Snapshot

Questions This Section Answers

• Which brands are most often placed in the top three recommendations despite not leading in overall coverage?
• How can similar coverage hide different rank-one recommendation rates?

Coverage alone does not show how prominently a brand is recommended. The leading cluster shows how top-three and rank-one placement rates differ from overall coverage.

Mailchimp led the category in first-position recommendations at 21.8% in October 2026, despite ranking fourth in overall coverage at 60.2%. Klaviyo and ActiveCampaign held higher top-three rates, yet Mailchimp's rank-one rate was several points higher than either, showing that similar coverage can still hide different first-position rates. Klaviyo held the category lead in top-three rate at 47.0% while ranking third in overall coverage at 67.1%.

Buyer-Intent Distribution

Questions This Section Answers

• Which buyer-intent classes are represented in the current benchmark, and which are missing?
• What does the absence of Pricing & Value and Multi-Brand Comparison observations mean for the Email Marketing Service benchmark?

All qualified observations in both months fell into the Brand Recommendation class, which captures discovery-and-consideration queries where a buyer is seeking a brand recommendation.

The current public series measures the Brand Recommendation class of discovery and does not yet contain qualified observations in the Pricing & Value or Multi-Brand Comparison classes.

Historical Measurement Record

New measurements are added to the same report over time.

Evidence and Source Layer

The benchmark is built from prompt-level observations that retain the query, AI/search surface, answer, brand outcome, recommendation placement, sentiment, and, where exposed, citations or attributable evidence sources. Source presence is evidence about the information environment. It is not automatically proof that the source caused the recommendation.

Scope Boundaries

This public benchmark does not measure:

• Market share or attributable sales.
• Every possible AI response, only the surfaces and prompts sampled.
• Organic-search ranking.
• Social mention volume.
• Private or sponsored channels.
• Causality from a metric movement alone.

Top 10 Cited Domains

Questions This Section Answers

• Which domains are cited most often across AI platform responses in the Email Marketing Service category?
• How concentrated are citations, and which tracked brand domains appear among the top sources?

Across all AI platform responses in October 2026, the benchmark observed 6,260 total citations across 1,268 unique domains.

Citations are broadly distributed, with the top 10 domains accounting for only 30.2% of all citations observed. Two tracked brand domains appear in the top 10: constantcontact.com at rank 5 and brevo.com at rank 9, indicating that official brand sites contribute meaningfully to the information environment AI surfaces draw from. The remaining top-cited domains are a mix of general platforms (YouTube, Reddit, Google), third-party review and comparison sites (Email Vendor Selection, Email Tool Tester, Venture Harbour), and workflow tools (Zapier), suggesting that AI recommendations in this vertical are shaped by a combination of user-generated content, independent evaluative sources, and brand-owned properties.

About This Benchmark

The LLM Authority Index AI Visibility Market Discovery Index tracks how often brands are recommended by major AI and search surfaces, how prominently they are placed, and whether the surrounding sentiment is positive, neutral, or negative. It is an industry-level benchmark built from prompt-level observations across six canonical AI/search surface families.

• AI Visibility Market Discovery Methodology
• AI Visibility Market Discovery Metric Definitions
• AI Visibility Market Discovery Research Standards
• Modeled AI Visibility Authority Value

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