Bouncer vs MailerCheck (2026): which should you pick?

Pick Bouncer if

• Fits if you clean a list a few times a year and don't want a subscription
• Works for companies that want their data processed and hosted in the EU

Look elsewhere if

• Skip it if you need a new inbox warmed up or DMARC managed, as Bouncer does neither
• Pricey if you also want placement and blocklist tests, as the Deliverability Kit is sold apart from $25 a month
• Watch out: Bouncer Shield for sign-up forms is another monthly subscription, priced by the number of checks
• Tight if you want to test first, as the 100 free credits cover a sample, not a whole list
• Watch out: the monthly credit subscription shows its price only inside the calculator

Pick MailerCheck if

• Fits if you clean a list now and then and want credits that never expire
• Works for senders who also want an inbox placement check

Look elsewhere if

• Tight if you want to try it free, as it is 10 credits
• Skip it if you want smaller packs, since the minimum purchase is 1,000 credits
• Watch out: Email Insights and Inbox Placement cost 200 credits each and cannot be tried free
• Watch out: refunds are only given if the vendor ends the service without cause

Bouncer

• Credits can also be bought as a monthly subscription that refills each month; the page shows its price only inside the calculator.
• Bouncer Shield, for form checks, is a separate monthly subscription priced by the number of checks.
• The Deliverability Kit is sold separately from verification credits.
• Bouncer does not warm up inboxes or manage DMARC records; the kit only tests them.

MailerCheck

• There is no free plan: new accounts get only 10 free credits, and the page's slider also lists a 100-credit free step.
• Purchases start at 1,000 credits; the pricing page says no discounts are offered beyond the bulk rates.
• The refund policy allows refunds only if the vendor ends the service without cause before the paid period ends.
• Email Insights and Inbox Placement cannot be tested on the free credits.

Bouncer

List verification

Upload a CSV and get each address back as deliverable, risky, undeliverable or unknown, with reasons. Catch-all domains get a deeper check.

Verification API

Synchronous and batch endpoints verify addresses from your own app, and an MCP server connects Bouncer to ChatGPT, Claude and other AI tools.

Toxicity Check

Scores each address from 0 to 5 for risks such as breached or widely shared addresses, known complainers and likely spam traps.

Bouncer Shield

Checks addresses as they are typed into sign-up forms and can block invalid, malicious or fraudulent entries by address or IP.

Deliverability Kit

Sends test emails to see whether they land in the inbox or spam, checks SPF, DKIM and DMARC, and monitors IPs and domains on blocklists.

AutoClean and integrations

Connects to email and CRM tools such as Mailchimp, HubSpot and Klaviyo to verify lists where they live, and AutoClean verifies a connected CRM without manual uploads.

MailerCheck

Bulk list verification

Upload a list, then download the cleaned result with safe, risky and harmful addresses separated; duplicates are removed without being charged.

Real-time API

Validates addresses as they are collected, with an autopay option that tops up credits when a balance falls below a set threshold.

Result categories

Reports flag typos, catch-all and role-based addresses, disposable emails and full mailboxes.

Email Insights

Tests email content for spam words, broken links and blocklists before sending; costs 200 credits per test.

Inbox Placement

Predicts whether an email reaches the inbox or the spam folder at mailbox providers including Google, AOL and Yahoo; costs 200 credits per test.

Bouncer

• Pay as you go$8

  one-time for 1,000 credits

  Credits never expire and get cheaper in bulk: $60 for 10,000, $400 for 100,000 and $2,000 for 1 million. Duplicates and unknown results are not charged.

• Deliverability Kit Starter$25

  per month for 250 test emails

  Inbox placement, blocklist, SPF, DKIM, DMARC and SpamAssassin tests, with 10 IPs or domains monitored. Sold apart from verification.

• Deliverability Kit Standard$125

  per month for 1,000 test emails

  The same tests with 25 IPs or domains monitored.

• Deliverability Kit Pro$250

  per month for 2,500 test emails

  The same tests with 50 IPs or domains monitored.

• EnterpriseCustom

  Unlimited test emails and monitored IPs or domains, multi-organization setup, custom agreements and an account manager.

MailerCheck

• Pay as you go, 1,000 credits$10

  one-time, for 1,000 credits used as you go

  Minimum purchase is 1,000 credits. 1 credit verifies 1 email address and credits never expire.

• Pay as you go, 10,000 credits$80

  one-time, for 10,000 credits used as you go

  Per-credit cost falls with volume: $45 for 5,000, $175 for 25,000, $500 for 100,000 and $2,000 for 1,000,000.