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subject-lines

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UpdatedJune 14, 2026 at 17:55

Write email subject lines (and preview text) that get opens without tripping spam filters or misleading - with variations to A/B test. Use when finalizing an email or testing opens.

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m-binimran

m-binimran/marketing-pack

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Market Research Analysts and Marketing SpecialistsBusiness and Financial Operations Occupations·SOC 13-1161

SKILL.md

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name	subject-lines
description	Write email subject lines (and preview text) that get opens without tripping spam filters or misleading - with variations to A/B test. Use when finalizing an email or testing opens.

subject-lines

The subject earns the open; the preview text closes it. Honest, specific, curiosity - not spam.

Process

Angles to test: curiosity, benefit/outcome, specificity/number, question, personal/relevant, urgency (honest). Write 5-10 across angles.
Keep it tight: front-load the point; mind mobile truncation (~40 chars shows).
Preview text complements (doesn't repeat) the subject and extends the hook.
Honesty: the subject must match the email's content (CAN-SPAM) - no fake "Re:"/"Fwd:" or false promises.
Deliverability: avoid spam-trigger words, ALL CAPS, and !!! (spam-trigger-guard).

Output

A ranked set of subject-line options (+ preview text), labelled by angle, ready to A/B test.

Guardrails

No deceptive subjects (law + trust). No spammy formatting.
Don't promise what the email doesn't deliver.

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name	subject-lines
description	Write email subject lines (and preview text) that get opens without tripping spam filters or misleading - with variations to A/B test. Use when finalizing an email or testing opens.

subject-lines

The subject earns the open; the preview text closes it. Honest, specific, curiosity - not spam.

Process

Angles to test: curiosity, benefit/outcome, specificity/number, question, personal/relevant, urgency (honest). Write 5-10 across angles.
Keep it tight: front-load the point; mind mobile truncation (~40 chars shows).
Preview text complements (doesn't repeat) the subject and extends the hook.
Honesty: the subject must match the email's content (CAN-SPAM) - no fake "Re:"/"Fwd:" or false promises.
Deliverability: avoid spam-trigger words, ALL CAPS, and !!! (spam-trigger-guard).

Output

A ranked set of subject-line options (+ preview text), labelled by angle, ready to A/B test.

Guardrails

No deceptive subjects (law + trust). No spammy formatting.
Don't promise what the email doesn't deliver.