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Hedwig

B2B email sequences from the mailboxes you already own, run from Claude Code or Codex. Open source, MIT licensed.

Visit Hedwigflyhedwig.com
Hedwig screenshot, image 1

Overview

Hedwig sends B2B email sequences from the mailboxes you already own and labels every reply. You can control it and analyze your campaigns from Claude Code or Codex. Open source, MIT licensed.

AI summary

Hedwig is an open-source tool designed for sending B2B email sequences from existing mailboxes, allowing users to control and analyze their campaigns through Claude Code or Codex.

Sources behind this listingSee source links, recorded dates and owner corrections.

Observed facts come from public pages. Founder-edited facts are supplied by the verified owner. AI-inferred facts are model interpretations; derived facts are calculated from other data. A source link lets you check the current page. It does not guarantee the fact is still current.

Dates show when a record was saved. Some older records use the listing’s update date; they are not proof of a fresh check. Missing source records are shown explicitly.

TaglineB2B email sequences from the mailboxes you already own, run from Claude Code or Codex. Open source, MIT licensed.
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DescriptionHedwig sends B2B email sequences from the mailboxes you already own and labels every reply. You can control it and analyze your campaigns from Claude Code or Codex. Open source,...
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Free planNot stated
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Free trialNot stated
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IntegrationsGitHub, Microsoft 365, SendGrid
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SummaryHedwig is an open-source tool designed for sending B2B email sequences from existing mailboxes, allowing users to control and analyze their campaigns through Claude Code or Codex.
AI-inferredRecorded Source link unavailable

Who Is It For

Best for

Businesses looking for a cost-effective solution to manage B2B email campaigns without incurring per-seat fees.

–Not for

Organizations that require a fully managed email service or those seeking extensive customer support.

Strengths & Weaknesses

Biggest strength

The ability to send multi-step email sequences while maintaining control over the mailbox and campaign analytics.

Biggest weakness

Pricing details and the availability of free plans or trials are unclear from public info (AI-inferred; may be outdated. Founders can correct this)

Classification

Likely competitors
MailchimpHubSpotActiveCampaign

Alternatives to Hedwig

See all alternatives to Hedwig

Community

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How we sourced this: Observed fields () were crawled from https://flyhedwig.com/ when recorded. Source links and dates are available above. AI-inferred fields () were generated by gpt-4o-mini and are always labelled, never presented as measured fact. Last updated: 13 October 2026. Site availability checked: 13 October 2026. Is this your tool? Claim it to edit and get a do-follow badge.