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Index › Marketing › Email deliverability › Folderly vs Validity Everest
Email deliverability and testing tools · October 2026 Edition

Folderly vs Validity Everest

Two of fourteen models named Folderly first on the direct prompt; one named Validity Everest. Folderly was named by eleven of the fourteen models and Validity Everest by twelve and Folderly carries 20 labels and Validity Everest 27, so the shares are not directly comparable.

Folderly

accepted challenger

Named in one category this edition.

Validity Everest

criticized challenger

Named in one category this edition.

First-choice share3%3%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate5%26%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#6#8A position in a field of 12; printed, not drawn.
Labels2027A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Folderly reading right to left. Rank and label count are printed, not drawn.GlockApps was named alongside these two in thirteen of the fourteen direct answers. GlockApps vs Folderly · GlockApps vs Validity Everest · Google Postmaster Tools vs Folderly

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the email deliverability and testing tools page.

By framing

How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
FolderlyFirst choices, of fourteen modelsValidity Everest
Direct211 against Folderly · 3 against Validity Everest
Paraphrase004 against Validity Everest
Comparative00
Budget-constrained00
Scale-constrained01
Negative00
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.

Across every category in the October 2026 Edition, Folderly and Validity Everest were named in the same answer thirty times, of the 52 answers naming Folderly and the 92 naming Validity Everest. In those answers Validity Everest took the first choice thirteen times and Folderly zero.

Every model, every framing

The eighty-four answers behind the chart above, one cell each: where Folderly and Validity Everest stood in it.
ModelDirectParaphraseComparativeBudget-constrainedScale-constrainedNegative
Claude Haiku 4.5
GPT-5.4 mini
Gemini 3.5 Flash
Perplexity Sonar
Grok 4.1 Fast
Mistral Small
DeepSeek V4 Flash
Llama 4 Maverick
Qwen 3.7 Flash
Kimi K2
GLM 4.7 FlashX
MiniMax M2.5
GPT-6 Luna
Muse Glimmer 30B
Folderly Validity Everest first choice named as an alternative argued againstblank: not namedEach cell is one answer, Folderly on the left and Validity Everest on the right.

The direct prompt

The plain question, one answer per model, grouped by where Folderly and Validity Everest stood in it.

Folderly first, Validity Everest not the choice

2 of 14 modelsValidity Everest was named in the answer but not as the choice, or not at all.
Mistral SmallFolderly, GlockApps alternatives: MailReach, Zoho CRM
MiniMax M2.5Folderly, Mailtrap alternatives: EasyDMARC, MXToolbox

Validity Everest first, Folderly not the choice

1 of 14 modelsFolderly was named in the answer but not as the choice, or not at all.
GPT-6 LunaValidity Everest alternatives: GlockApps

Neither was the first choice, one was named

4 of 14 modelsThe answer put something else first and named one of the two as an alternative.
Claude Haiku 4.5InboxArmy, MailBrace alternatives: Folderly, GlockApps, HubSpot, Mailsoftly
Grok 4.1 FastGlockApps alternatives: MailReach, Validity Everest, Warmy.io
GLM 4.7 FlashXGlockApps, MailReach alternatives: Folderly, Warmy
Muse Glimmer 30BGlockApps alternatives: MailReach, Validity Everest

Neither was named

7 of 14 modelsThe answer made no first choice from these two in this category.
GPT-5.4 miniMailgun Optimize alternatives: GlockApps
Gemini 3.5 FlashAllegrow, GlockApps alternatives: Mailgun Optimize, ZeroBounce
Perplexity SonarGlockApps alternatives: Amplemarket, MailReach, NeverBounce
DeepSeek V4 FlashMailReach alternatives: GlockApps, Google Postmaster Tools, MXToolbox
Llama 4 MaverickGlockApps
Qwen 3.7 FlashGlockApps alternatives: 250ok, Instantly, Kickbox, Lemlist, Valimail, ZeroBounce
Kimi K2GlockApps, Instantly alternatives: HubSpot Sales Hub, MailReach

Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.

By buyer segment

The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Folderly leads by two points.
Folderly2%#13 of 15
Validity Everest0%#15 of 15
The full small business standing →
Mid-marketThe figures above
Level: the same share of first choices.
Folderly3%#6 of 12
Validity Everest3%#8 of 12
The full mid-market standing →
Enterprise
The order flips: Validity Everest leads at enterprise.
Validity Everest45%#1 of 14
Folderly2%#6 of 14
The full enterprise standing →

What the models said about Folderly

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.

“Overpriced for most mid-market teams — many reviewers suggest MailReach as a better-value alternative.” DeepSeek V4 Flash · direct prompt · soft negative
“Folderly and GlockApps are top choices due to their comprehensive features and strong reputations” Mistral Small · direct prompt · first choice
“Folderly or Mailtrap would be the top choices.” MiniMax M2.5 · direct prompt · first choice
“Built specifically for B2B sales teams and lead-generation agencies running cold-email campaigns at scale” Claude Haiku 4.5 · direct prompt · alternative

What the models said about Validity Everest

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.

“its pricing often starts at $20,000 to $65,000/year, making it massive overkill and too expensive for most mid-sized operations” Gemini 3.5 Flash · paraphrase prompt · soft negative
“enterprise suites like *Validity Everest* (which can cost upward of $15,000/year) to be too complex and cost-prohibitive” Gemini 3.5 Flash · direct prompt · soft negative
“The gold standard for enterprise, but likely overkill for mid-sized companies on both features and budget.” DeepSeek V4 Flash · paraphrase prompt · soft negative
“The gold standard for larger mid-market and enterprise brands. Extremely deep seed-testing network and comprehensive reputation monitoring, though highly priced.” Gemini 3.5 Flash · scale prompt · first choice
“My default pick: Validity Everest” GPT-6 Luna · direct prompt · first choice
“Everest is the largest and most robust platform in the space... generally cost-prohibitive for SMBs.” Gemini 3.5 Flash · comparative prompt · alternative
Also compared

Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.