Paste HTML or compose
Bring in an issue from Substack, Beehiiv, Mailchimp, or any HTML editor. Our allow-list sanitizer keeps headings, tables, lists, and inner words intact while stripping unsafe scripts and trackers.
Direct-to-Screen & Hybrid Email Publishing
Your newsletter, delivered to their screen—never buried in Promotions.
Reach joined members directly on their computer and phone screens, with automatic fallback email for everyone else from a single list. Keep 100% of your own sponsors, let our AI replace old ads with category-distinct deals, or do both—for a flat 1 Blasts Credit per member (as low as 5¢ per 1,000 or free with claimed deals).
Shared browser sign-in (
web_jwt) · Zero 1x1 tracking pixels · Optional 20-credit summaries-
First-Party Netlify Blobs Hosting (
newsletter-issue-images) Up to 10 HTTPS images per issue (5 MB max each, 15 MB total, 8s timeout) are verified at preview and served strictly fromhttps://b2b-leads-licenses.netlify.app. - True Binary 1x1 Spy Pixel Removal & DNS Guard Tiny 1x1 tracking pixels are dropped based on real image dimensions before attributes are cleaned. Private, loopback, link-local, metadata, and internal hostnames are refused on every redirect.
- >40% Removal Confirmation & Refund Parity AI ad cuts leave at most 3 "Ad space" holes. Cuts over 40% of visible text require a second confirmation, and any ad refunded for size is removed from both plain and HTML copies.
Strip and summary are splittable jobs—offer a 1,500-character summary even when keeping your own ads. Your typed summary always wins over AI.
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Signed-In Publisher Authorization
Blasts Corp HQ never sends another publisher's issue in any ad mode until that publisher records an active grant (
publisher_id,scope,granted_by,granted_at,revoked_at) from their own signed-in account. - Guaranteed Top Attribution Line Every co-published issue displays "Blasts Picks, featuring [Publisher], used with permission" at the top of both the plain copy and the formatted copy.
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Clean House-Grant Accounting
Corp HQ sends use house credits tagged
house_grantand filtered byisCustomerRevenueso internal syndication never distorts customer revenue reports.
A straightforward workflow
From draft to delivered, without the busywork.
Sign in with your existing browser account (web_jwt). Write or paste your HTML edition once, choose how advertising and summaries behave for that issue, and publish to your membership.
Pick your ad & summary mode
Choose to keep your own ads, strip and replace up to 3 ad slots with category-distinct deals, or keep yours and append ours. Review copied pictures and confirm any AI ad cuts before sending.
Deliver across every surface
Desktop extensions receive rich formatted HTML, mobile app inboxes receive clean plain text with written-out https:// links, and email-only subscribers receive fallback delivery via One List Routing.
Per-issue monetization & origin rendering
Three ad choices on every issue—all at 1 Blasts Credit per member.
Select any of the three advertising modes below and toggle between the Desktop Extension view (chrome-extension://) and Phone App view (capacitor://localhost) to inspect the exact reader payload.
Choice 1 (Keep my own ads): Your direct sponsorships remain intact with 100% of ad revenue retained by you. You can still offer a 20-credit executive summary because strip and summary are separate jobs.
The Weekly Harbor · Issue #142
A strong quarter for local & cloud operators
The Saturday market opens at 9:00 AM on the green, while regional software teams reported a 14% drop in cloud infrastructure costs & faster onboarding.
Verified First-Party Image: https://b2b-leads-licenses.netlify.app/newsletter-issue-images/chart_142.png (1x1 spy pixels dropped)
Read the full community & market calendar
Publisher's Direct Sponsor · Kept In Place
Harbor Hardware & Supply — Serving Main Street Since 1986
Your original sponsor copy and link stay untouched right where you placed them.
Also in this edition
Library hours expand on Monday, and the Entrepreneur Center hosts a live workshop on Wednesday evening. Formula check: LTV / CAC = 4.2x.
Added at End · Up to 3 Category-Distinct Catalog Deals (Labeled AD)
AD · Cloud & Dev
Serverless DB — $100 Credit
AD · Local Dining
$50 Prime Steakhouse Cert
AD · Executive Travel
35% Off Boutique Hotels
Roles, permissions & security
Your list and content stay under your control.
Company Publishers and Blasts Corp HQ share the same desktop form and browser sign-in (web_jwt), with clear rules separating publisher-owned sends from permission-granted syndication.
- Two profiles, sensible defaults: Company accounts default to keeping their own ads; Corp HQ defaults to stripping ads and filling up to 3 catalog deals.
- Written publisher grant required: Corp HQ cannot preview or send another publisher's issue in any ad mode unless that publisher grants permission from their own signed-in account.
- 3-pile ad catalog with distinct buckets: Holes fill from
PING_DEALS_CATALOG_JSON,ping-deals-submitted, and live partner placements—bucketed bymain_category,sub_category, ordeal_id. - 5 MB inbox overflow safeguard: If an extension inbox reply ever approaches the 5,000,000-byte line (
REPLY_BYTE_LINE),body_htmlis deferred on the oldest newsletter rows while keeping their plain text so the inbox never fails.
Edition pre-send controls
Click any toggle below to see how per-issue settings apply before you approve a send.
Global ad-cut switch (
NEWSLETTER_ADCUT_ENABLED)
When on, each issue uses its own ad choice. When off, issues go out as typed with zero AI calls.
Offer 20-credit executive summary
Splittable from ad cutting. Readers unlock your typed or AI summary + up to 8 B2B company lookups.
Allow "Blasts Picks" co-publishing grant
Grant Corp HQ revocable permission to syndicate your issue for free promotion with top attribution.
Host 100-day online web archive (5¢)
Publish a shareable web URL for 100 days (renew your entire archive anytime for under $1).
Reader intelligence & B2B prospecting
20-credit AI summaries with 1-click Free B2B Leads lookup.
Busy readers can unlock a concise 1,500-character executive summary of any issue—and immediately look up the decision-makers at up to 8 companies mentioned inside the newsletter.
- Publisher-typed summary always wins: Write your own summary at upload, or leave the box empty and let our server AI generate it during preview.
- Two ways for readers to open: Unlock in one click for 20 Blasts Credits (price stays off the screen until clicked, cached forever once unlocked) or summarize for free using the reader's own OpenAI, Claude, or Gemini key in the extension.
- Up to 8 Free B2B Leads company chips: Both own-key and 20-credit paid summaries display the "Look up in Free B2B Leads" button on desktop so readers can pull verified contacts across 109 B2B sources.
- Hard $100/month AI ceiling: Server previews use one pinned model at a time (
gpt-4o-minidefault,claude-haiku-4-5-20251001, orgemini-3.5-flash-lite) with 30 previews/day per sender.
Unlocked Summary View
Enterprise FinTech & Cloud Weekly · #304
Opened via 20-Credit Paid Summary (Cached — re-opens free anytime)
- Treasury automation grew 34% YoY as mid-market finance teams adopted real-time clearing rails.
- Ramp Financial, Snowflake, and Stripe introduced multi-entity ERP reconciliation webhooks.
- Publishers pairing screen delivery with One List email routing cut subscriber churn by 29%.
AD · partnerSummaryAd
Ramp Corporate Treasury — Earn 5.1% on Operating Cash
Partner Ledger
Mentioned Companies (Up to 8 returned — click to look up in Free B2B Leads):
One List Routing & Web Archive
One subscriber CSV. Every reader reached without duplicates.
Already have subscribers on Substack, Beehiiv, Mailchimp, or HubSpot? Upload one list—NewsletterBlasts routes delivery automatically and hosts your back-catalog online for pennies.
Path A: Connected screens
Members with the free Blasts browser extension or Blasts & Deals mobile app receive your newsletter directly on screen—with confirmed read receipts and zero spam-folder filtering.
Path B: Multi-ESP email fallback
Everyone else on your CSV receives your issue via your connected Gmail, Microsoft 365, AWS SES ($0.10/1,000), SendGrid, Mailgun, Postmark, Brevo, or Resend accounts—plus a $5 WhitelistEmails.com reward invite.
5¢ online archive (100 days)
Host any published edition at a shareable, indexable web URL for 100 days for just 5¢—and renew your entire archive of past issues at once for under $1, complete with a 1-click subscribe button.
Built into the publishing workflow
Practical capabilities across the Blasts ecosystem.
Every tool across Blasts.app, EmailBlasts.app, FreeB2BLeads.app, and SavingsSites.com works together cleanly.
Direct-to-screen delivery
Bypass Gmail's Promotions tab and corporate spam traps on every connected desktop and phone screen.
Three ad choices at 1 credit
Keep your own ads, strip and replace with up to 3 matched deals, or keep yours and append ours at the end.
First-party picture shield
Up to 10 pictures (5 MB each, 15 MB total) are copied to Netlify Blobs with DNS/SSRF checks and 1x1 spy pixel removal.
20-credit AI summaries
Splittable from ad cutting. Readers unlock your typed or AI brief for 20 credits or use their own API key free.
Free B2B Leads lookup
Paid and own-key summaries extract up to 8 company names linked straight into 109 B2B lead sources.
Anonymous 1-click join
Readers subscribe in one click without handing over their personal email address or phone number.
One List hybrid routing
Automatic deduped split between direct Screen Blasts and multi-mailbox / 8-ESP fallback Email Blasts.
"Blasts Picks" syndication
Opt in from your signed-in account so Corp HQ can feature your issue with full attribution for free promotion.
200+ interest group tags
Tag editions across 15 verticals and 200+ topics so readers tune preferences instead of unsubscribing.
WhitelistEmails $5 rewards
Incentivize email-only readers to whitelist your sending domain with $5 merchant gift certificates.
Polls, clocks & .EML export
Include live audience polls, countdown timers, 1-click payment links, and standard .eml archival exports.
Free credits with deals
Every deal claimed on SavingsSites includes 40 to 1,500 free Blasts Credits for publishing and summaries.
Reader discovery without email surrender
Featured Newsletter Directory.
Readers sample and join publications in one click without giving away their personal email address. Filter the example directory below or test the 1-click subscription state.
Harbor Community & Merchant Insider
Weekend events, civic updates, and participating Main Street merchant specials—every claimed SavingsSites deal includes 40 to 1,500 free Blasts Credits.
Anonymous 1-click join
Cloud & AI Infrastructure Briefing
Weekly teardown of GPU cluster economics, enterprise LLM deployments, and storage benchmarks with 1-click Free B2B Leads company lookups.
20-Cr summary ready
The Revenue Architect Playbook
Outbound sequences, multi-mailbox warmup benchmarks, and direct-to-screen conversion case studies for B2B founders and sales leaders.
Co-published on Lane A
Capital & Treasury Morning Note
Five-minute morning briefing on private credit, SaaS M&A multiples, Fed liquidity, and corporate cash yield strategies.
20-Cr summary ready
Free B2B Leads Weekly Signal
Newly funded startups, municipal contract awards, SEC executive filings, and high-intent buying triggers across 109 data sources.
Direct lookup chips
Agentic Workflows & DevTools Digest
Practical engineering patterns, browser extension architecture, and security hardening for software teams.
Co-published on Lane A
Transparent credit economics
5¢ per 1,000 deliveries—or free with claimed deals.
Prepaid Blasts Credits never expire, and there is never a monthly per-subscriber tax or revenue share. Every newsletter delivery costs 1 Blasts Credit per member across all three advertising modes.
Newsletter delivery (all 3 ad choices)1 Blasts Credit / member
Free Starter + Claimed SavingsSites Deals3 free/mo + 40–1,500 credits / deal
Growth — 20,000 Blasts Credits ($0.0025 / send)$50
Pro — 500,000 Blasts Credits ($0.001 / send)$500
Gorilla — 60,000,000 Blasts Credits (5¢ / 1,000)$3,000
Email Gorilla — 5M Email Blasts + 10M B2B Leads$995
Optional reader AI summary unlock20 Blasts Credits
Optional 100-day online archive$0.05 / issue (<$1 bulk renew)
Common questions
The practical & architectural details.
Do all three advertising modes really cost the same 1 Blasts Credit per member?
Yes. Whether you choose to keep your own ads untouched, strip your ads and fill up to three holes with matched deals from our catalog, or keep your ads in place and append up to three labeled AD deals at the end, the send rate on Lane A is a flat 1 Blasts Credit per member.
How do desktop extensions and mobile phones receive different versions of the same issue?
When you upload or paste HTML, the server stores both a 60,000-character formatted copy (body_html) and a 30,000-character plain-text copy (body). Desktop extension origins (chrome-extension://) receive the sanitized HTML copy, while phone origins (capacitor://localhost and https://localhost) receive only the plain-text copy with decoded entities and written-out clickable https:// links so raw HTML tags never appear on mobile screens.
How does first-party picture hosting and 1x1 spy pixel removal work?
At preview, our server fetches up to 10 external HTTPS images per issue (up to 5 MB each and 15 MB total, with an 8-second timeout). It resolves DNS and refuses private, loopback, link-local, metadata, or internal hostnames on every redirect, drops any 1x1 tracking pixel based on true image dimensions, and serves the verified pictures exclusively from our first-party Netlify Blobs store (https://b2b-leads-licenses.netlify.app).
How does "Blasts Picks" co-publishing work between Company Publishers and Blasts Corp HQ?
Both roles use the same publisher website with shared browser sign-in (web_jwt). Blasts Corp HQ cannot preview or send another publisher's issue in any ad mode unless that publisher has recorded an active permission grant from their own signed-in account. Every co-published issue displays "Blasts Picks, featuring [Publisher], used with permission" at the top of both the plain and formatted copies.
Can I offer a 20-credit AI summary even if I keep my own ads?
Yes. Ad stripping and summarization are separate, splittable jobs. You can keep 100% of your own ads and still offer a 1,500-character executive summary. If you type a custom summary, your text wins; if left blank, our AI generates it. Readers who unlock the 20-credit summary on desktop also receive up to 8 company lookup buttons connected to Free B2B Leads.
What happens if some of my subscribers haven't installed the Blasts app or extension yet?
One List Routing automatically delivers your newsletter to connected members directly on screen and sends fallback email to everyone else on your CSV through your connected Gmail, Microsoft 365, AWS SES, or ESP accounts—complete with an invitation to claim a $5 WhitelistEmails.com reward.
A more direct, transparent way to publish newsletters.
Start with your next edition on NewsletterBlasts.app, preview both desktop and mobile reader versions, and reach your audience at 1 flat credit per member.