Email Signatures + Substack's New Features

August 13, 2025 |
Keenen Charles

This week, Substack launched a bunch of new features, Inbox Collective asks if it's still worth launching a newsletter in 2025, and explore the history of email signatures.

Also the featured newsletters this week cover restaurants, cars, cybersecurity, and more!

📰 News & Articles

Substack adds A/B testing for headlines, profile customization, and more

Substack has introduced A/B testing for headlines, profile customization, livestream updates, and more features.

Is It Still Worth Launching a Newsletter in 2025?

Inbox Collective explores the viability of launching a newsletter in 2025, considering the evolving landscape and challenges.

Email signatures and the power of defaults

A deep dive into the history and significance of email signatures, exploring their evolution and impact on communication.

⭐ Featured Newsletters

The Nebular Newsletter

Nebular — Where Crypto Meets Macro Intelligence

CyberSecStats

Fresh cybersecurity stats in your inbox each month for free.

The Juicy Byte

The latest in beauty, wellness, and CPG—backed by science.

Auto Insider

Car News Without the Noise

Restaurant Dropout

Weekly dinner menus

See Ya

This is our weekly newsletter covering tips and tools for newsletter operators and everything else happening in the email newsletter space. Hope you enjoyed it!

Keenen Charles

Keenen is the creator of InboxReads and a believer in the future of newsletters and email for sharing great content.

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