Free SPF and DKIM
Checker Tool
Quickly validate your domain's SPF and DKIM records with ease. Ensure your email authentication is properly configured to maximize deliverability.
SPF Record
DKIM Record
Error
Why You Need DKIM and SPF
Prevent Email Spoofing
SPF and DKIM authenticate your emails, preventing attackers from sending messages that appear to come from your domain.
Improve Deliverability
Properly configured email authentication increases the chances of your emails landing in the inbox instead of spam.
Build Sender Reputation
Consistent email authentication builds trust with email providers, improving your sender reputation over time.
Learn How DKIM Works
Understanding email authentication is crucial for maintaining a healthy email infrastructure.
DKIM Checker: What Is DKIM and Why It Matters
DKIM (DomainKeys Identified Mail) in a Nutshell — DomainKeys Identified Mail (DKIM) is an email authentication technique that allows the receiver to check that an email was indeed authorized by the owner of the sending domain.
Learn MoreRunning Your Own Email Infrastructure
Guides for choosing software and servers when you send from infrastructure you control.
Self-Hosted Email Marketing Software
Eleven self-hosted platforms compared by license, price, sending setup and fit.
VPS for Email Marketing
Port 25 policies, reverse DNS and extra IPs across 14 VPS providers.
Open Source Email Marketing Software
listmonk, Mautic, Keila, phpList and more, with license and last release.
Bulk Email Software
SaaS, self-hosted and desktop senders priced at 400,000 emails a month.
Mailchimp Alternatives
Real prices at 10,000 and 100,000 contacts, including self-hosted options.
Need Enterprise Email Infrastructure?
Octeth provides self-hosted email marketing software with built-in deliverability tools. Own your infrastructure and save on SaaS fees.