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MailSenpai

Sends newsletters and B2B outreach campaigns with list management, scheduling and stats, plus an SMTP relay for transactional mail.

Actively maintained

MarketingSmall business
mailsenpai.com ↗LinkedInFacebookInstagramYouTubeCrunchbaseGitHubX
Open mailsenpai.comAlternativesSet it up for my teamIs MailSenpai yours? Claim the card →
At a glanceswept Oct 13, 2026

≈ 140visits/mo

Little sign of use · estimate, read Oct 13, 2026

  • MailSenpai140
  • #1 Canva70.4M
For
Small businesses and freelancers running B2B email newsletters and outreach campaigns
Activity
Actively maintainedsite updated 7 days ago
Company
since 2016 · ~31 peopleper their site
Runs as
SDKAPI
Used for
  • Import contacts into lists and remove duplicates
  • Schedule and send newsletter campaigns to a set time
  • Send website or app email through an SMTP relay
Worth knowingcomputed from what we read · each with its source
  • Used more than 69% of the 1,377 tools on its shelfINITE Atlas →
  • On the web since 2016, older than 92% of its shelfINITE Atlas
  • Has an MCP server (1 in the registry)public registry →
  • Publishes llms.txt, a file written for AI assistantsmailsenpai.com ↗
The companyeach fact with its source · read Oct 18, 2026
Your datawhat they publish, each line with its page · read Oct 18, 2026

These are MailSenpai's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 18, 2026
  • MCP servercom.mailsenpai/mcpverified in the MCP registry
  • Stateanswers, requires sign-inchecked 2026-10-18
  • Address to connectmcp.mailsenpai.com/mcp

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Marketingby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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beta

Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is MailSenpai?

    Sends newsletters and B2B outreach campaigns with list management, scheduling and stats, plus an SMTP relay for transactional mail. It is listed in the Atlas under Marketing.

  • Who is MailSenpai for?

    Small businesses and freelancers running B2B email newsletters and outreach campaigns

  • Do people use MailSenpai?

    Little sign of use: ≈ 140 visits/mo · estimate, 2026-10.

  • Is MailSenpai still maintained?

    Actively maintained: site updated 7 days ago.

  • Is MailSenpai safe?

    We do not audit vendors. What MailSenpai publishes, read 2026-10-18: GDPR stated on its privacy policy.

  • What are alternatives to MailSenpai?

    In Marketing, by use: Pushwoosh, Maileroo, MailTester, Elastic Email, TopMessage, Magicfit.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk