Free Email Deliverability and DMARC Tools
Which email deliverability and DMARC tools a startup can test spam scores and inbox placement and protect its sending domain with for free today, how many tests or domains the free plan covers, whether a card is needed and what the first paid plan costs, read from each provider's own page.
Free allowances read on each provider's own pages, all checked on or after . Deliverability tools change their free plans from time to time: confirm the terms on the provider's page before you rely on it.
Email deliverability tools a startup can use for free today include mail-tester.com (3 free tests a day), EasyDMARC (Free plan after a 14-day trial), GlockApps (2 spam test credits, $0 plan), Valimail (Free Monitor plan, DMARC visibility), and MailGenius (Basic spam test is 100% free). Each of the 8 free plans below links to the provider's page that states it, with its main limit, its test or domain caps, whether a card is needed and what the first paid plan costs.
Product emails, newsletters and outreach only work if they reach the inbox. Deliverability testers check your spam score, authentication and blocklists before you send, and DMARC monitoring shows who sends mail as your domain so you can lock it down. Several have a free plan.
The headline rarely tells you how far it goes. Free plans cap tests a day or credits, keep results for a few days, or cover one domain, and inbox placement tests across many providers are usually paid. Each tool below shows what is free, its main limit, its test or domain caps, whether a card is needed and what the first paid plan costs, quoted from the provider's own page with the date we read it.
Which tools we picked and the order they appear in are our editorial choices; the terms are the providers'. Some of these providers pay us a referral commission when someone signs up through our link: those links are labeled, and they play no part in which tools are listed or where.
Email deliverability testers with a free plan
Check spam scores, blacklists and inbox placement before you send, free to start.
- 1
mail-tester.com
A quick spam score for a single test email
mail-tester.com gives 3 free tests in any 24 hours, and results stay visible for 7 days on the free version.
- What's free
- 3 free tests a day (source: mail-tester.com)
- Tests and domains
- 3 tests in any 24 hours (source: mail-tester.com)
Start free at mail-tester.comTerms read on mail-tester.com on mail-tester.com: the free allowance and how to start - 2
GlockApps
Spam tests with a small free credit
GlockApps's Free plan costs $0 and includes 2 spam test credits. Its first paid plan, Essential, is $59 a month.
- Tests and domains
- 2 spam test credits (source: glockapps.com)
- First paid plan
- Essential: $59 a month (source: glockapps.com)
Start free at GlockAppsTerms read on glockapps.com on GlockApps: the free allowance and how to start - 3
MailGenius
Spam, authentication and broken-code checks
The basic version of MailGenius is 100% free, so checking a test email for spam, authentication and broken code costs nothing.
Start free at MailGeniusTerms read on mailgenius.com on MailGenius: the free allowance and how to start - 4
Mailtrap Email Sandbox
Catching test emails in a sandbox before they ship
Mailtrap's Email Sandbox free plan gives 50 test emails, one sandbox and 10 emails per sandbox, with no sandbox email address. The first paid plan bills $168 a year.
- Tests and domains
- 1 sandbox, 10 emails per sandbox (source: mailtrap.io)
- First paid plan
- Basic: $14 a month billed yearly (source: mailtrap.io)
Start free at MailtrapTerms read on mailtrap.io on Mailtrap Email Sandbox: the free allowance and how to start
DMARC monitoring with a free plan
Read DMARC reports and lock down your sending domain, free to start.
- 1
EasyDMARC
DMARC, DKIM and SPF monitoring after a trial
EasyDMARC accounts move to its free plan when the 14-day trial ends, and the page does not state the free plan limits.
Start free at EasyDMARCTerms read on app.easydmarc.com on EasyDMARC: the free allowance and how to start - 2
Valimail
Seeing which services send as your domain
Valimail's free Monitor plan is started from its Try Monitor Free link. Starter and the higher tiers are priced on request, so no paid price is published.
- First paid plan
- Starter: contact sales for pricing (source: valimail.com)
- 3
Postmark DMARC Digests
A weekly DMARC summary for a domain you own
Postmark provides a free weekly DMARC digest email for the domain you enter, and the page says the service is provided for free.
- Tests and domains
- Reports for the domain you enter (source: dmarc.postmarkapp.com)
Start free at PostmarkReferral linkTerms read on dmarc.postmarkapp.com on Postmark DMARC Digests: the free allowance and how to start - 4
Cloudflare DMARC Management
Teams already on Cloudflare DNS
Cloudflare DMARC Management is available to all Cloudflare customers with Cloudflare DNS, so a domain on Cloudflare DNS can use it.
Start free at CloudflareTerms read on developers.cloudflare.com on Cloudflare DMARC Management: the free allowance and how to start
Also useful for founders
Referral links, picked for fit and ordered by fit (70%) and what a signup earns us (30%), at no cost to you. They never change this page's ranking.
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How this comparison is built
The list covers email deliverability and DMARC tools a founder can use for free today without applying to a program. The order and the "best for" notes are our editorial reading of each tool's terms. Every term comes from the tool's own pricing or help page on the date shown, never from a third-party list; follow each link for the full conditions. A cap on tests a day, domains or DMARC reports a month, inbox placement tests kept for paid plans can matter more than the headline, so the comparison quotes them wherever the provider states them. Some of these tools pay StartupPerks a referral commission, and their links are labeled as referral links; that decides neither whether nor where a tool appears, and no tool pays for a placement on this page.
Read the full methodologyCommon questions
How can I test email deliverability for free?
By the terms each provider states, mail-tester.com gives 3 free tests a day, MailGenius's basic spam test is free, GlockApps gives 2 spam test credits on its free plan, and Mailtrap's free Email Sandbox catches 50 test emails.
Is there free DMARC monitoring?
Yes. Valimail has a free Monitor plan for DMARC visibility, EasyDMARC has a free plan after its 14-day trial, Postmark sends a free weekly DMARC digest, and Cloudflare includes DMARC Management with Cloudflare DNS.
Is mail-tester free?
mail-tester.com gives 3 free tests in any 24 hours, and free results stay visible for 7 days.
What does GlockApps cost?
GlockApps' free plan includes 2 spam test credits; its Essential plan is $59 a month.
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