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The PromoStash product

A home for your marketing email research.

Collect the emails you want to study. Keep the references that matter. Connect your archive to a compatible AI tool when you want to explore it further.

Start collecting for free

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01

Private capture inbox

Subscribe to the brands you want to study with your own PromoStash address. Their emails arrive in a searchable archive, ready when you need a reference—not another notification in your personal inbox.

Private capture, search, and email viewing are included on Free and Pro.

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02

Swipe file collections

A useful swipe file is more than a long list of emails. Make small, intentional collections for the launches, offers, and ideas you want to come back to.

Start with 3 collections on Free. Pro includes 100.

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03

Email import & forwarding

Bring a useful newsletter or a small archive of brand emails into PromoStash. Upload EML and MBOX files, forward messages as attachments, or set up selective forwarding for future emails.

Email import and forwarding are included with Pro. No Gmail OAuth required.

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04

MCP access

Connect PromoStash to a compatible MCP client and ask questions about the emails you have saved. PromoStash retrieves the references. Your chosen AI tool handles the analysis.

MCP access with optional collection writes is included on Free and Pro. No PromoStash AI credits.

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Deliberately a reference library.

PromoStash is built for marketers who want their own record of brand newsletters, promotions, onboarding messages, and launches. Your archive starts with the emails you receive or import. It is not a public database of every campaign a competitor has sent.

Search your saved text, browse sender histories, and use collections to keep references together. There are no campaign scores, generated emails, AI summaries, or built-in chat. MCP gives your chosen AI client scoped archive access and optional collection writes; any analysis happens in that external tool.

Start with Free to try capture, search, collections, and MCP together. Upgrade to Pro when you need more room, existing-email import, or automatic forwarding. Compare the plans or read our guide to building an email swipe file.

Your next reference starts here.

Start collecting for free. Connect your AI when you’re ready.

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