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Print · September 2026 Edition

PostGrid vs Mailjoy

Zero of twelve models named PostGrid first on the direct prompt; zero named Mailjoy. PostGrid was named by twelve of the twelve models and Mailjoy by eleven and PostGrid carries 40 labels and Mailjoy 19, so the shares are not directly comparable.

PostGrid

criticized challenger

Named in one category this edition.

Mailjoy

accepted challenger

Named in one category this edition.

First-choice share7%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate25%11%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#4#8A position in a field of 11; printed, not drawn.
Labels4019A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, PostGrid reading right to left. Rank and label count are printed, not drawn.Postalytics was named alongside these two in ten of the twelve direct answers. Postalytics vs PostGrid · Postalytics vs Mailjoy · Lob vs PostGrid

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve 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 print page.

By framing

How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
PostGridFirst choices, of twelve modelsMailjoy
Direct00
Paraphrase20
Comparative30
Budget-constrained012 against PostGrid
Scale-constrained101 against Mailjoy
Negative008 against PostGrid · 1 against Mailjoy
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.

Across every category in the September 2026 Edition, PostGrid and Mailjoy were named in the same answer twenty-eight times, of the 110 answers naming PostGrid and the 55 naming Mailjoy. In those answers Mailjoy took the first choice three times and PostGrid two.

Every model, every framing

The seventy-two answers behind the chart above, one cell each: where PostGrid and Mailjoy 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
PostGrid Mailjoy first choice named as an alternative argued againstblank: not namedEach cell is one answer, PostGrid on the left and Mailjoy on the right.

The direct prompt

The plain question, one answer per model, grouped by where PostGrid and Mailjoy stood in it.

Neither was the first choice, one was named

4 of 12 modelsThe answer put something else first and named one of the two as an alternative.
Claude Haiku 4.5PFL alternatives: PostGrid, Sendoso
Grok 4.1 FastPostalytics alternatives: Lob, PostGrid, Sendoso
Mistral SmallPostalytics alternatives: Lob, PostGrid, Sendoso
GLM 4.7 FlashXPostalytics alternatives: Lob, PostGrid, Postal, Reachdesk

Neither was named

8 of 12 modelsThe answer made no first choice from these two in this category.
GPT-5.4 miniSendoso alternatives: PFL
Gemini 3.5 FlashPostalytics, Reachdesk alternatives: Alyce, Lob, Postal
Perplexity SonarPostalytics alternatives: DirectMail.io, Lob, Sendoso
DeepSeek V4 FlashPostalytics alternatives: Lob, PFL, Reachdesk, Sendoso
Llama 4 MaverickPostalytics alternatives: Magileads
Qwen 3.7 FlashPostalytics alternatives: Click2Mail, LetterStream, Sendoso
Kimi K2Postalytics alternatives: Lob, PFL, Sendoso
MiniMax M2.5Postalytics alternatives: Lob, Postal, Sendoso, Stannp

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
Mailjoy leads by two points.
Mailjoy4%#5 of 9
PostGrid2%#6 of 9
The full small business standing →
Mid-marketThe figures above
The order flips: PostGrid leads at mid-market.
PostGrid7%#4 of 11
Mailjoy2%#8 of 11
The full mid-market standing →
Enterprise
PostGrid leads by nine points.
PostGrid9%#4 of 9
Mailjoy0%#– of 9
The full enterprise standing →

What the models said about PostGrid

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

“Platforms to Avoid on a Tight Budget ... Postgrid — Cheaper API alternative ($0–99/mo), but pricing is often quote-based” DeepSeek V4 Flash · budget prompt · hard negative
“Avoid Lob ($260-$550/month) and PostGrid unless you need API-first development capabilities” Kimi K2 · budget prompt · hard negative
“Platforms to Avoid or Be Cautious About ... 1. Postgrid - Poor Customer Support” GLM 4.7 FlashX · negative prompt · hard negative
“PostGrid is best for revenue ops teams needing API-driven direct mail triggered by CRM events (rated 9.3/10 overall)” MiniMax M2.5 · comparative prompt · first choice
“Choose PostGrid or Lob if you want API-first, developer-controlled automation” Perplexity Sonar · comparative prompt · first choice
“I'd recommend starting with PostGrid due to its: Strong B2B focus” Mistral Small · paraphrase prompt · first choice

What the models said about Mailjoy

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

“pricing traps for your size: Mailjoy, Click2Mail, Printfection ... likely lack the governance, API depth, and attribution you need” DeepSeek V4 Flash · scale prompt · soft negative
“Mailform, Mailjoy, and similar lightweight tools if you need enterprise governance, complex approvals, or robust automation” Perplexity Sonar · negative prompt · soft negative
“If you want free/cheap testing: Start with Mailjoy or Postalytics free plan” Mistral Small · budget prompt · first choice
“if you are looking for a platform with a simple, self-serve interface, Mailjoy or Click2Mail may be more suitable” Llama 4 Maverick · negative prompt · alternative
“You want simple, self-serve postcards/letters: → Mailjoy or Click2Mail” Qwen 3.7 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.