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Sales Email Subject Lines
Sales emails compete with every other promotion in the inbox. The lines that win state the offer or the outcome plainly, add a real deadline when one exists, and avoid the phrases that spam filters and readers have learned to skip.
15 sales subject lines
Your brand
{first_name}, your 20% off expires Sunday
100StrongYour brand
The upgrade our customers ask about most
80GoodYour brand
Last day to save on annual plans
85StrongYour brand
You left this in the shop window
93StrongYour brand
New: the feature you asked for is live
93StrongYour brand
Your quote is ready, {first_name}
93StrongYour brand
How Acme cut reporting time in half
73GoodYour brand
Before prices change on the 1st
87StrongYour brand
Two ways to get more from your plan
88StrongYour brand
A better price for teams of 5+
87StrongYour brand
Your trial ends in 3 days
93StrongYour brand
Still comparing options? Here's a checklist
80GoodYour brand
Early access for existing customers
80GoodYour brand
Worth a look: our spring collection
73GoodYour brand
Only 40 seats left for the workshop
92Strong
Why these work
Lead with the offer or the outcome
People scan. “Your 20% off expires Sunday” tells them everything in six words.
Use real deadlines only
An honest “Last day” works. A fake one every week trains your list to ignore urgency.
Borrow proof
A customer result (“How Acme cut reporting time in half”) sells harder than an adjective.
Write your own sales lines
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Frequently asked questions
What is a good subject line for a sales email?
One that names the offer or the benefit, is specific (a number, a date, a product), and sounds credible. Keep it under about 50 characters and avoid pressure phrases like “act now” or “guaranteed”.
Should sales subject lines include the discount?
Usually yes. A concrete figure like “20% off” or “free shipping” is one of the clearest reasons to open. If you run discounts constantly, test lines that lead with the product or a story instead.
Do words like “free” send emails to spam?
A single word rarely decides it on its own; modern filters weigh sender reputation, authentication and engagement far more. But stacked hype (“FREE!!! Act now”) still looks like spam to people, which lowers engagement.