Customize your form's appearance across platforms – adjust the favicon and link preview image for all your forms.

Jan 20, 2025

Customize your form's appearance across platforms – adjust the favicon and link preview image for all your forms.

Recent updates

Campaign scheduling
Feb 11, 2026](https://letterby.com/explore/campaign-scheduling)

Domain Warming
Dec 7, 2025](https://letterby.com/explore/domain-warming)

Email Verification
Dec 2, 2025](https://letterby.com/explore/email-verification)

Other features

Manual email verification
Feb 8, 2025
Receive push notifications
Jul 28, 2024
API
Jul 25, 2024