1. What is Email Deliverability?

Deliverability refers to the ability of your email to reach the recipient’s inbox successfully.

It’s not just about “sending”—it’s about avoiding spam filters, passing authentication checks, and being trusted by receiving servers.

2. Deliverability vs. Delivery

Delivery: Your email leaves your server and reaches the recipient’s server (technical handoff).
Deliverability: The email actually makes it into the inbox instead of spam, promotions, or being blocked.

Think of delivery as “the package arrived at the building,” while deliverability is “the package got placed on the recipient’s desk.”

3. Why Does Deliverability Matter?

Business Impact: If your marketing emails land in spam, you lose sales opportunities.
Trust & Reputation: Poor practices (spammy content, no authentication) harm your sender reputation.
User Experience: Important transactional emails (password resets, confirmations) must reach inboxes instantly.

4. Key Factors Affecting Deliverability

Authentication protocols → SPF, DKIM, DMARC prove you’re a trusted sender.
Sender reputation → Your IP/domain history impacts how ISPs view you.
Content quality → Spammy subject lines, all-caps, too many links raise flags.
Engagement signals → High open/click rates improve trust; high bounces and spam complaints hurt it.

5. Real-World Example

Good deliverability: An online store sends order confirmations → customers see them instantly.
Bad deliverability: Same store’s promotional emails end up in spam → sales drop without the store realizing why.

🥋 Sensei Tip:

Deliverability is like reputation in a village—if people know and trust you, they welcome you into their homes (inbox). If you show up with bad manners (spammy behavior), doors start closing (spam folder).

What is Email Deliverability? Why Does It Matter?

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