Free Tools

Free Email Deliverability Tools

Set up email authentication, build professional signatures, and plan your cold email infrastructure. All free, no signup required.

Email Authentication

Generate a DMARC DNS TXT record to protect your domain from email spoofing and phishing.

Generate an SPF DNS TXT record to authorize which servers can send email on behalf of your domain.

Generate DKIM DNS records and cryptographic keys to verify your emails haven't been tampered with in transit.

Create a professional HTML email signature that works in Gmail, Outlook, and Apple Mail.

Calculate how many domains and mailboxes you need for your cold email campaigns.

Authentication is the foundation. Email warmup is the next step. Start your free trial with TrulyInbox.