# Sendoso vs Postie: which do AI models recommend for direct mail, October 2026

GTM AI Recommendation Index, October 2026 Edition, Print. Three of fourteen models named Sendoso first on the direct prompt; two named Postie. Page: https://gtm-ai-index.com/marketing/print/sendoso-vs-postie/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Sendoso | 6% | #3 of 10 | 28% | 36 | 13 of 14 |
| Postie | 6% | #5 of 10 | 7% | 14 | 7 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: sendoso first (first choices: Sendoso) (alternatives: PFL)
- Grok 4.1 Fast: sendoso first (first choices: Sendoso) (alternatives: Lob, PostGrid Print & Mail)
- Qwen 3.7 Flash: sendoso first (first choices: Sendoso) (alternatives: CIENCE, Cobro, Lob, PebblePost)
- Mistral Small: postie first (first choices: Postie) (alternatives: PFL, Postalytics)
- Llama 4 Maverick: postie first (first choices: Postie) (alternatives: Postal)
- Claude Haiku 4.5: neither first, one named (first choices: Postalytics) (alternatives: Lob, Sendoso)
- Gemini 3.5 Flash: neither first, one named (first choices: Reachdesk) (alternatives: Alyce, Lob, PostGrid, Postal, Postalytics, Sendoso)
- DeepSeek V4 Flash: neither first, one named (first choices: Postalytics) (alternatives: Lob, PFL, Postal, Postie, Sendoso)
- GLM 4.7 FlashX: neither first, one named (first choices: Postalytics) (alternatives: Lob, PostGrid, Postal, Sendoso)
- Muse Glimmer 30B: neither first, one named (first choices: PFL - Printing For Less) (alternatives: Lob, Postal, Postalytics, Reachdesk, Sendoso)
- Perplexity Sonar: neither named (first choices: PostGrid) (alternatives: Reachdesk)
- Kimi K2: neither named (first choices: Lob, Postal) (alternatives: PFL, Postalytics)
- MiniMax M2.5: neither named (first choices: Postalytics) (alternatives: PFL Direct Mail Platform)
- GPT-6 Luna: neither named (first choices: Postalytics) (alternatives: Lob, Postal, Reachdesk)

## What the models said about Sendoso

- "Several AI models recommend avoiding it for direct mail automation due to negative feedback and limitations in scalability and pricing transparency." (Mistral Small, negative prompt, hard negative)
- "Sendoso is the biggest platform to avoid unless you have a massive budget and can tolerate poor support." (Kimi K2, negative prompt, hard negative)

## What the models said about Postie

- "it can be pricey for newer startups ... though it may be less budget-friendly" (Mistral Small, budget prompt, soft negative)
- "For companies with the most limited budgets, Postie and Click2Mail stand out because they offer pay-as-you-go pricing without monthly subscriptions." (Claude Haiku 4.5, budget prompt, first choice)
- "Postie - offers performance direct mail for digital marketers, lookalike audiences, and real-time ROAS tracking." (Llama 4 Maverick, direct prompt, first choice)
- "Postie stands out for its ease of use, performance tracking, and B2B focus" (Mistral Small, direct prompt, first choice)

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. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.