How to Avoid the Spam Folder: Deliverability Guide 2025
Deliverability is harder than ever. Learn technical setups (SPF, DKIM, DMARC), content tips, and warmup strategies to land in the primary inbox.
The Holy Trinity: SPF, DKIM, and DMARC
These are DNS records that authenticate your domain. If you do not have SPF, DKIM, and DMARC properly configured, your emails will go to spam. Period. Set these up with your domain registrar before sending a single cold email.
Domain and Inbox Warmup
Never buy a new domain and blast 500 emails on day one. You must 'warm up' the domain by slowly increasing the sending volume over 3-4 weeks. Use automated warmup tools that simulate natural email conversations to build a positive sender reputation.
Content and HTML Weight
Keep cold emails plain text or extremely light on HTML. Avoid using more than one link, and never use attachments in a cold outreach email. Avoid spam trigger words like 'Free', 'Guarantee', or 'Act Now'.
List Hygiene is Paramount
A bounce rate above 2% will severely damage your deliverability. Always verify your email lists using LeadStonk's Email Verifier to ensure 0% bounces.
Conclusion
Deliverability is a technical game. Master the setup, keep your content clean, and obsess over list hygiene with LeadStonk. The primary inbox awaits.
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