Does AI recommend Buttondown?

Buttondown was not named in any of the 180 email recommendations we collected from 6 AI models. Our prompts are generic, so niche tools can be at a disadvantage. Leader: Resend 61%.

Recommended as the top pick

not ranked · Leader: Resend 61%

Mentioned at all

Named anywhere in the recommendation

Adopted in generated code

#3 of 4 · Leader: Resend 55%

What AI recommends first for email

Share of 180 answers across 6 models

Resend

61%

Postmark

37%

Amazon SES

Buttondown

Used in AI-built apps

Share of 120 answers across 6 models

Resend

55%

Nodemailer (SMTP)

32%

Buttondown

Mailchimp

Get the full breakdown for Buttondown

Results for each of the 6 models and each developer context, who gets picked instead, and real excerpts of AI answers. Free, by email.

Get the free breakdown

Measured 2026-10-01 with claude-sonnet-5.5, gpt-6.1-sol, gemini-3.8-flash, grok-4.7, deepseek-v4.1-flash, qwen3.8-max-prime, 5 runs per recommendation prompt and 5 per build prompt, via public APIs with no system prompt. Methodology. DefaultRank is independent and not affiliated with any tool vendor or model provider.