DKIM is an email authentication method, using digital signature attached to the header of email. In a nutshell, when DKIM is published in the DNS records of a domain, it will display a public key that recipient servers can match with the encrypted key in the signature.
DKIM, along with DMARC and SPF have been created to prevent spoofed emails, spam, or other any malicious emails; by verifying email authenticity to improve online safety.
As for any email security protocols, having a DKIM properly set improves the deliverability of emails sent from this domain.
Everything you need to know about email deliverability to make sure that your emails reach the inbox and never land in spam. More than 30 emails key points analyzed, including practical guides and relevant tools to use to maximize your email deliverability and increase the ROI of your emailing campaigns.
Spam filters are using keyword detection to spot junk emails and make sure your inbox stays clean. This is why you should choose carefully the words used in the subject and body of your emails. Here's is the ultimate list of spam-trigger keyword that you should ban from your email content in 2023!