Starts Saturday, November 21

35% off Unspam for Black Friday

From Saturday, November 21 to Tuesday, December 1, 35% off your first payment on the Custom plan, monthly or annual.

Until then, HIGHSEASON20 takes 20% off your first month, through Friday, November 20.

See pricing
+5% From Saturday, November 21, win our 8-email spam filter game and get 40% off instead of 35%

Everything your Black Friday email needs before it goes out

Checks on the list you send to, the domain you send from and the message itself, from the spam score to the inbox to the screen. Find what would cost you the sale while there is still time to fix it.

Spam test

Know your score before you hit send

SPF, DKIM and DMARC, blacklists, content and HTML, checked against one real message, with an AI assistant that tells you exactly what to fix.

$0.18 $0.12 per test with BLACKFRIDAY35

UNSPAM SCORE excellent
90 / 100
high deliverability · likely inbox
SPF · DKIM · DMARC aligned +3
12 / 12 links healthy +1
Missing List-Unsubscribe-Post −10
HTML / text ratio 1.8 +1
Inbox placement

See where every copy lands

Your campaign goes to 10 seed mailboxes at 7 major providers, and each one reports Inbox, Promotions, Spam or Missing, so you find out before your list does.

$0.50 $0.33 per test with BLACKFRIDAY35

PLACEMENT · 8 PROVIDERS · 4s 5 / 8 INBOX
G gmail.com inbox · primary
O outlook.com inbox · focused
Y yahoo.com inbox
Z zoho.com inbox
A awsapps.com inbox
P protonmail.com promotions
G gmx.com promotions
A aol.com spam · junk
primary inbox rate 67% · ↑ 4 pts this week
Device previews

Catch the broken layout first

Your offer rendered in 50+ real email clients, Gmail, Outlook, Apple Mail, iPhone and Android among them, each in light and dark mode.

$0.75 $0.49 per test with BLACKFRIDAY35

AI heatmap

Put the offer where readers look

An AI eye-tracking heatmap shows where subscribers are likely to look, so the discount and the button sit where the attention goes.

$0.30 $0.20 per test with BLACKFRIDAY35

recording eye-tracking
attention
high medium low
Email verification

Clean the list before the biggest send

Upload your list and every address comes back deliverable, risky, undeliverable or unknown, with the reason. Bounces cost the sender reputation your sale runs on, and unknown results are never charged.

$6.40 $4.16 per 1,000 addresses with BLACKFRIDAY35

12,480 ADDRESSES VERIFIED ready to send
Deliverable 10,982
Risky 749
Undeliverable 624
Unknown 125
Accepted Deliverable
Catch-all domain Risky
Domain takes no mail Undeliverable
Mailbox does not exist Undeliverable
removed before sending 1,498 addresses
DMARC monitoring

See who sends mail as your domain

The reports mailbox providers send about your domain, turned into a list of every source that sends as you, with its status and the share of its mail that passes DMARC. Open a source to see the SPF and DKIM results behind its failing mail. A forgotten tool or a spoofer shows up before it costs you the inbox.

$6.00 $3.90 per domain a month with BLACKFRIDAY35, first domain free

SENDING SOURCES · 30 DAYS example.com
Messages 49,358
Compliance 97%
Policy Quarantine
Source Status
mta.example.com 41,206 messages Compliant
mail.example-esp.net 5,880 messages Compliant
crm.example.io 1,032 messages Partially failing
203.0.113.24 1,240 messages Unauthorized

Will your Black Friday subject line land in spam?

Type the subject you plan to send, or try one of ours. Trigger words light up as you type, and the spam risk score follows.

This checks the subject alone, for trigger words, capitals, exclamation marks and emoji. Authentication, sender reputation and the rest of the email decide the rest.

Spam risk 58 out of 100: high

This reads like spam. Filters and readers will both hesitate.

Shouted words
8
Exclamation marks
6
Emoji
2

Trigger words

  • act now Urgency & pressure
  • free gift Free & offers
  • last chance Urgency & pressure

A subject is one line. A full Unspam spam test reads the whole message: authentication, blacklists, content and HTML.

Be the spam filter for one Black Friday morning

It is 9:00 on Black Friday and 8 emails are waiting. Read the sender, the subject and the authentication results, then send each one to the inbox or to spam. Every answer comes with the reason a real filter would give.

From November 21, 2026, sorting at least 7 of 8 correctly unlocks 40% off your first payment, instead of the sale’s 35%.

Email 1 of 8
From
Northwind Outfitters <orders@northwind.example>
Subject
Your order #48213 has shipped
Authentication
spf=passdkim=passdmarc=pass
Also known
The recipient placed this order yesterday

Senders who test before they send

4.8 / 5
Read verified reviews on G2

“Essential insights that maximize campaign success”

Instead of just showing a spam score, it accurately shows where my marketing emails get filtered, their placement (inbox, spam, promotions), and specific fixes for subject lines, sender reputation, and headers. It helps me avoid guesswork and maximize conversions.

Roman F. Founder

“Fixed spam issues with email checker”

Just a couple of emails and I've already fixed several deliverability issues. Wow, this is awesome.

Ahmad A. Google Dev Advisory Board

“Improve email deliverability, best tool!”

The heatmap is particularly useful because it shows you precisely which parts of your email pique interest and how to enhance them to increase CTR.

Mary A. B. Internet Service Provider

Everything in the Custom plan, from the first payment

No feature tiers and no seats. The code changes the price of the first payment, nothing else.

Email verification
Clean the list before the big send. Unknown results, duplicates and malformed rows are never charged.
DMARC monitoring
See who sends on your domain’s behalf and catch authentication failures early. The first domain is free.
AI assistant
Reads your results and tells you exactly what to fix, from authentication to the lines hurting deliverability.
3-year history
Every result stays in your account for three years, so this year’s sends can be compared with next year’s.
Unlimited senders
Connect every address you send from. Unspam meters tests, never seats or inboxes.
REST API
Run every test from your own code and pull the results into your workflow.
MCP server
Run tests and read results straight from your AI assistant or agent.
Volume discounts
Per-test rates drop automatically as your monthly volume grows.

Try it on your biggest send of the year

Every paid plan comes with a 14-day refund, no questions asked. If Unspam does not earn its place in your Black Friday sends, ask in the support chat and we process it the same day.

Black Friday questions

Who can use the code?

Anyone starting a new Custom plan subscription before the deal ends, whether you sign up during the sale or already have a free account. You enter BLACKFRIDAY35 on the Stripe checkout page.

Does it work with annual billing?

Yes. The annual price already includes the 15% saving, and BLACKFRIDAY35 takes 35% off that whole first year.

I already pay for Unspam. Can I use it?

Not on an existing subscription. The code is applied when a new subscription starts at checkout, and a plan change does not pass through checkout.

What happens after the first month or year?

Your plan renews at its regular price, the one shown struck through beside the discounted price. You can change or cancel the plan from the Subscription page.

Does it cover credit top-ups?

No. Top-ups are bought outside checkout, so the code does not apply to them. Verifications you build into your plan are covered.

When does it end?

Tuesday, December 1, 2026 at 23:59 UTC, which is 6:59 pm in New York and 3:59 pm in Los Angeles.

35% off the first invoice of a new Custom plan subscription, billed monthly or annually, with code BLACKFRIDAY35 entered at checkout, from November 21, 2026 00:00 UTC to December 1, 2026 23:59 UTC. Cannot be combined with another code. Excludes credit top-ups and changes to an existing subscription. The 14-day refund applies as on every paid plan. A score of at least 7 of 8 in the spam filter game on this page, during the same dates, shows a second code worth 40% on the same terms, in place of BLACKFRIDAY35.