> Free tools to check and improve your emails: signature generator, spam tester, SPF/DKIM/DMARC checker, subject line tester and more. No signup required.

*Source : https://10centmail.com/tools/*

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Free tools

# Free email marketing & deliverability tools

Built-in utilities to check and improve your emails — no signup required.

Free

### Email signature generator

Create a clean, professional HTML signature in seconds.

Open tool

Free

### Spam score tester

Check how likely your email is to land in the spam folder.

Open tool

Free

### SPF / DKIM / DMARC checker

Verify your domain's email authentication in one click.

Open tool

Free

### Subject line tester

Preview length and flag spammy words before you send.

Open tool

Free

### Inbox preview

See how your subject line and preheader appear in the inbox.

Open tool

Free

### Email validator

Check an address format and its MX records.

Open tool

These tools pair with our guides. New to authentication? Start with [SPF, DKIM & DMARC](https://10centmail.com/email-authentication-spf-dkim-dmarc/). Want the full picture? Read the [deliverability guide](https://10centmail.com/email-deliverability-guide/).

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