Write a welcome email to a new subscriber
GPT-3.5
GPT-6 Astra
Subject: Welcome to [Brand Name]! 🎉
Hi [First Name],
Thanks for subscribing—we’re glad you’re here!
You’ll receive [helpful tips, fresh updates, and exclusive offers] from us, all focused on [key benefit for your subscriber].
Ready to explore? [Check out our latest resources →]
If you have a question or want to say hello, just hit reply. We’d love to hear from you.
Welcome aboard,
The [Brand Name] Team
[Unsubscribe]
What changed
Astra writes something that looks like an actual marketing email, with a subject line, a single call to action (“Check out our latest resources →”), and an unsubscribe link placed where real emails put it. GPT-3.5’s letter reads more like formal correspondence. It opens “Dear [Subscriber],” promises to keep you “up-to-date in your field” (an odd assumption for an unknown newsletter), and awkwardly asks readers to “let us know by clicking the appropriate link.”
Astra’s best touch is “just hit reply. We’d love to hear from you,” which turns a broadcast into an invitation. Its brackets also do more work, prompting the sender to name a “[key benefit for your subscriber]” instead of settling for “valuable information.” That flexibility has limits, though. The 🎉 and breezy tone won’t suit every brand, and GPT-3.5’s version, while stiff, is complete and sendable as is. Astra’s is tighter and more modern, but it leaves more blanks to fill.