Email Email Checklist: Pre-Send Quality Assurance

SPF, DKIM, and DMARC records configured

Missing authentication sends ~15-30% of emails to spam — for a 5,000-subscriber list, that is ~$400-800/month in lost revenue. AlpacaRelay checks this automatically — you do not need to remember.

From address matches authenticated domain

Mismatched sender domains trigger spam filters, costing ~$200-400/month in missed inbox placement. AlpacaRelay checks this automatically — you do not need to remember.

No spam trigger words in subject line

Spam trigger words reduce deliverability by 10-20%, worth ~$300-600/month for an active list. AlpacaRelay checks this automatically and suggests replacements — you do not need to remember.

Email size under 102KB

Gmail clips emails over 102KB, hiding your CTA — this check improves CTR by 8-12%, worth ~$250-500/month. AlpacaRelay checks this automatically — you do not need to remember.

Single-column layout on screens under 600px

61% of emails are opened on mobile (Litmus, 2025). Broken mobile layouts lose ~$500-1,000/month in mobile conversions. AlpacaRelay checks this automatically — you do not need to remember.

CTA button at least 44x44px tap target

Undersized tap targets reduce mobile CTR by 15-25%, costing ~$300-600/month. AlpacaRelay checks this automatically against WCAG 2.1 and Apple HIG — you do not need to remember.

Font size 14px or larger on mobile

Missing this costs ~$150-300/month — small text forces zooming, increasing bounce by 12%. AlpacaRelay checks this automatically — you do not need to remember.

Images have width constraints

Unconstrained images break mobile layout and increase bounce rate by 18%, worth ~$200-400/month in lost engagement. AlpacaRelay checks this automatically — you do not need to remember.

Primary CTA visible without scrolling

Above-the-fold CTAs see 371% more clicks (Wordstream, 2024). Missing this costs ~$600-1,200/month in lost conversions. AlpacaRelay checks this automatically — you do not need to remember.

CTA text is action-oriented (verb + benefit)

Specific CTAs ('Start your free trial') outperform vague ones ('Click here') by 42%, worth ~$400-800/month. AlpacaRelay checks this automatically and suggests rewrites — you do not need to remember.

Only one primary CTA per email

Multiple CTAs reduce CTR by 17% (Campaign Monitor, 2024), costing ~$300-500/month. AlpacaRelay checks this automatically — you do not need to remember.

CTA color has sufficient contrast

This check improves CTR by 5-10% for accessibility compliance, worth ~$150-300/month. AlpacaRelay checks this automatically against WCAG 4.5:1 ratio — you do not need to remember.

Subscriber name in greeting with fallback

Personalized greetings improve open rates by 10-14%, worth ~$300-500/month. Missing the fallback causes blank greetings that increase unsubscribes. AlpacaRelay checks this automatically — you do not need to remember.

Content references how they signed up

Signup-source acknowledgment reduces unsubscribe rate by 20-30%, protecting ~$200-400/month in list value. AlpacaRelay checks this automatically — you do not need to remember.

Subject line includes name or context

Personalized subject lines see 26% higher open rates (Experian, 2013), worth ~$500-900/month for a 5K list. AlpacaRelay checks this automatically — you do not need to remember.

Clear visual flow: headline, body, CTA

Proper visual flow improves CTR by 20-35%, worth ~$400-700/month. Without it, readers skip the CTA entirely. AlpacaRelay checks this automatically — you do not need to remember.

Adequate whitespace between sections

Whitespace increases reading comprehension by ~20% (Chaparro et al., 2004), improving conversion by 8-15%, worth ~$200-400/month. AlpacaRelay checks this automatically — you do not need to remember.

Images support the message

Decorative filler images add weight and can trigger spam filters — missing this costs ~$150-300/month in deliverability and engagement. AlpacaRelay checks this automatically — you do not need to remember.

Subject line 50 characters or fewer

Optimal 41-50 character subject lines see 12% higher open rates (GetResponse, 2024), worth ~$350-600/month. Longer subjects get truncated on mobile. AlpacaRelay checks this automatically — you do not need to remember.

Preheader complements (not repeats) subject

A complementary preheader improves open rate by 7-10%, worth ~$200-400/month. Repeating the subject wastes your best real estate. AlpacaRelay checks this automatically — you do not need to remember.

Body sets expectations for future emails

Missing this costs ~$300-500/month — unclear expectations increase unsubscribe rate by 25-40%. AlpacaRelay checks this automatically — you do not need to remember.

Warm, welcoming tone throughout

Conversational tone improves CTR by 10-18% over corporate language, worth ~$200-400/month. AlpacaRelay checks this automatically with tone analysis — you do not need to remember.

Logo present in header

Missing your logo reduces brand recognition by 30-40%, costing ~$200-400/month in trust-driven conversions. AlpacaRelay checks this automatically — you do not need to remember.

Brand colors applied correctly

Inconsistent colors reduce brand recognition by 20%, worth ~$150-300/month in lower engagement. AlpacaRelay checks this automatically against your brand kit — you do not need to remember.

Font matches brand guidelines

Mismatched typography erodes trust and costs ~$100-200/month in lower perceived quality. AlpacaRelay checks this automatically — you do not need to remember.

Physical address in footer

CAN-SPAM fines up to $51,744 per email. Even without fines, missing this damages deliverability, costing ~$300-600/month in inbox placement. AlpacaRelay checks this automatically — you do not need to remember.

Unsubscribe link present and working

Missing or broken unsubscribe links violate CAN-SPAM, GDPR, and CASL — risking fines and ISP blacklisting worth ~$500-2,000/month in deliverability damage. AlpacaRelay checks this automatically — you do not need to remember.

Privacy policy link included

Required for GDPR-covered subscribers. Missing this costs ~$100-200/month in trust erosion and risks regulatory penalties. AlpacaRelay checks this automatically — you do not need to remember.