v2.0 · Now with credit packs

Email marketing
that actually lands.

SparrowiMailer pairs a deliverability-first sender with built-in email validation — every campaign reaches a clean inbox. Send, validate, and grow from one place.

Start free · No card See pricing

2,400+ teams shipping campaigns ★★★★★

campaign.sparrow

Delivered today

48,217 +12%

Open rate

42.3%

Inbox placement

98.6%

Bounce rate

0.8%

Validated

12,408

SPF · DKIM · DMARC Auto-warmup ON

Sender reputation

98 / 100

Campaign sent

just now · Q4 launch

How it works

From signup to first send in 60 seconds.

Connect your sender

Plug in Gmail, Outlook or any SMTP. We validate credentials and run a deliverability self-check on day one.

Clean & segment

Upload your CSV — the validator scrubs invalid and risky addresses and segments by domain and engagement.

Send & track

Schedule the send, throttle per sender, track opens and bounces in real time. Top up with credit packs when you scale.

Platform

One platform. Every send.

A focused toolset that replaces three — a sender, a validator, and a desktop app — stitched together with predictable monthly quotas.

Deliverability-first sending

SPF, DKIM and DMARC checked before every dispatch. Bounce-aware retries and throttling so issues surface before mailbox providers see them.

Bulk email validator

Upload a CSV, get a scored list back in seconds — syntax, MX, disposable and catch-all in one pass. 99.2% accuracy on real-world lists.

Per-sender quota bars

See exactly how much each connected Gmail or SMTP account has burned. Top up with a credit pack in one click.

Windows desktop app

Connect once, send from your own Gmail / Outlook / SMTP accounts with strict per-account caps and live quota sync. Code-signed, works offline.

Real-time analytics

Opens, clicks and bounces update live. Segment by sender, domain or date range without leaving the page.

Referral program

Share your code, your friend joins, you both get credits. No cap, no expiry — wallet credit applies to any plan or pack.

Dashboard

One view. Every metric that matters.

Real-time opens, bounces, validator results, and per-sender quota bars — all on a single screen. No buried reports, no drill-down rabbit holes.

Try it free — no card

Loved by senders

The senders behind our best numbers.

"We moved off Mailchimp in a weekend. Bounce rate dropped from 8% to 1.2% by the second send."

Ananya R.

Head of Growth, Lumen

"The validator alone pays for itself. We caught 4,300 dead addresses on our very first import."

Rohan K.

Founder, Northwind

"Cleanest pricing of any tool we evaluated. Monthly quotas, real top-ups, no fake tiers."

Priya N.

Marketing Lead, Acme Studio

FAQ

Questions, answered.

Most common questions from senders evaluating SparrowiMailer. Full FAQ →

Do I need my own SMTP server?

No. SparrowiMailer works with Gmail, Outlook, Zoho, or a dedicated relay like Amazon SES or Mailgun. Connect once through the desktop app — we handle throttling, retries, bounce parsing and quota sync.

How is a monthly quota different from a daily limit?

Most tools cap you at a fixed daily send — skip a day and those credits vanish. With SparrowiMailer your entire plan is one monthly pool: burn it in one day or spread it across 30, your choice.

What's included in the email validator?

Every address runs through five checks: syntax, domain MX lookup, disposable-mail detection, role-based filter, and SMTP-level catch-all probing. Results return as a clean CSV.

Do you offer a free trial?

Yes — every new account gets 1,000 emails and 500 validator credits free, no card required. They don't expire.

See all 20+ questions