Discover. Verify. Research. Write. Deliver.
Five stages. One workspace. Zero copy-paste between tools. From 'who's worth emailing' to 'reply just landed in your inbox' — all in one place.
Discover
Two engines find buyers LinkedIn can't filter. The B2B layer surfaces verified roles and titles. The web crawler hunts founders shipping this week, editors citing your space, ex-big-tech operators gone solo. Build a list Sales Navigator doesn't know about yet.
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Behind Discover
Two stacks run side-by-side. The B2B enrichment layer (Apollo + ZoomInfo + Crunchbase) feeds standard filters — title, headcount, funding, geo. The web crawler runs custom scrapes against GitHub commits, Show HN posts, ProductHunt launches, founder Twitter/X — surfacing leads who 'don't exist' on LinkedIn yet. Dedupes against your existing CRM and per-workspace suppression list automatically.
Verify
Live mailbox check + MX lookup + role-prefix filter + catch-all confidence pass — before a single email leaves. Net bounce rate across the platform: 1.4%. Industry baseline: 8-12%. You don't pay for inboxes that don't exist.
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Behind Verify
Each address runs four checks: SMTP RCPT probe, MX record validation, role-prefix filter (info@, sales@, hr@, abuse@), and a workspace-scoped never-send list. Catch-all domains (roughly 1-in-3 of Israeli SMB inboxes) trigger a second confidence pass via reply-handle probe. Net platform-wide bounce rate: 1.4%. Industry baseline: 8-12%.
Research
Four research calls fire in parallel per lead — career timeline, press graph, personal surface, structured bio. A fifth fallback fills any gaps. Every claim in the generated opener is footnoted with a source URL. Auditable. Not vibes.
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Behind Research
Four parallel research engines fire per lead. Career timeline (LinkedIn + Apollo). Press graph (news scrape + Google News). Personal surface (their site, blog, GitHub). Structured bio (Crunchbase, AngelList). A fifth fallback engine runs only if gaps remain. Every claim in the generated opener is footnoted with the source URL — kept on file for the workspace's audit log.
Write
Opener + two follow-ups, drafted on the research bundle. Voice matches your past campaigns. Hebrew or English both render correctly in Gmail, Outlook, Apple Mail. No transliterated names. No bidi marker leakage. No 'Hi firstName' templating that flags as spam.
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Behind Write
Drafts use Claude 4.7 anchored against your past-campaign corpus for voice matching. EN + HE rendered with proper bidi handling — U+200E/200F isolation marks only where needed, never leaked into the raw HTML (the silent killer that flags Gmail). Hebrew names stay in Hebrew script: 'אורי' not 'Or'. Two follow-ups timed to the lead's typical reply lag and email-open rhythm.
Deliver
Sends rotate across your warmed inboxes by reputation score, not round-robin. SPF, DKIM, DMARC, blacklist, and domain warmup checked pre-flight. Positive-sentiment replies classified and pushed to your WhatsApp in under 8 seconds. You respond before the lead cools.
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Behind Deliver
Sending rotates across your warmed inboxes load-balanced by reputation score — not round-robin. Pre-flight per campaign: SPF, DKIM, DMARC, RBL blacklist scan, domain warmup health. Positive-sentiment replies are classified in <2s by GPT-4o-mini and pushed to your WhatsApp via the Business API. OOO replies and auto-responders are detected and suppressed automatically (so your reply rate metric stays honest).
Live email. Live research.
Four parallel calls collapse into one paragraph that didn't exist five seconds ago.
Triple specificity
Every email is built around one specific pain, one specific person, and one specific solution. The exact combination Mailer calls 'specific specificity'.
Signal-driven outreach
Funded firms get touched within 48 hours. Hiring firms within a week. Just-promoted contacts within a day. Higher response rates by definition.
Compiled for: Daniel K. · Head of Growth, Pebblefly
- •Head of Growth at Pebblefly, Tel Aviv (2 yrs)
- •Prior: Senior PM at Notion, shipped AI blocks beta
- •Pebblefly raised $4.2M Series A · Apr 2026 · Founders Fund
- •Published 'AI ops at 14 people' on company blog last week
- •Open with the AI-ops post — clear shared mental model
- •Avoid generic SaaS framing · he's read every cold-email playbook
- •Best reply window: weekday mornings IST
- linkedin.com/in/danielk
- techcrunch.com/.../pebblefly-series-a
- pebblefly.com/blog/ai-ops-at-14-people
- crunchbase.com/.../daniel-k
70-80% inbox. ~10% replies.
What happens when every message is written for one specific person.
Founder. SDR. GTM lead.
Same engine. Three speeds.
Higher reply rate
Per-lead research + signal timing more than doubles the reply rate vs templated mass-sends.
Better deliverability
Warmed inboxes, automatic rotation, and reputation checks keep your sender score high even at scale.
Owner-led tone
Every line reads like a founder wrote it on a Sunday — not like a sequence template auto-merged.
Plans that scale with your pipeline.
Two plans. Same engine. Founders run themselves. Teams get priority research and unlimited campaigns.
Outbound that fits real teams
Founder, team, and managed tiers. No seat lock-in.
Less tab-juggling, more replies
Discovery, enrichment, sending, and reply triage in one product.
Built for long-term deliverability
Rotation, warm-up, reputation checks. Automatic.
Priority routing on complex queries
Deep-research jobs run faster on paid plans.
Founder plan
Starter
First outbound campaigns with per-lead research. Built for founders running their own outbound at modest volume.
What's included
Everything a single operator needs to ship Mailer-quality messages.
- 500 sent emails / month
- Per-lead AI research (LinkedIn + web)
- Hebrew + English personalization
- 1 sending domain + warmup
- Reply-handling automation
- Email + chat support
Team plan
Growth
Outbound teams running multiple sequences with CRM sync. Priority research queue and deliverability monitoring.
What's included
Built for SDR teams and pipeline-driven ops leaders.
- 2,000 sent emails / month
- Everything in Starter, plus:
- 3 sending domains + auto-warmup
- Multi-step sequences + A/B testing
- Deliverability + inbox-placement monitoring
- CRM sync (HubSpot, Salesforce, Pipedrive)
Send less. Land more.
Describe one person. Mailer ships their cold email and two follow-ups in their language, on their signal, in your inbox.
14 days free. No card. Keep every reply.
One link. The app, the inbox, the agent — all live behind the next click.
stop getting 3% open rate, start getting more clients
Reply rate
0%
Opens
0%
Pipeline
$X / week