Substack Username Checker
Monitor a taken Substack handle 24/7 and get an instant alert when your publication name becomes available.
No card required · 7-day trial · Monitor 1 handle, weekly checks
Claim your handle before someone else does
Enter a username and get alerted the moment it becomes available on any platform.
1-30 characters · letters, numbers, periods, underscores
Substack Handle Rules
- •Length - 3 to 30 characters.
- •Characters - Letters (a-z), numbers (0-9), and hyphens (-). No underscores, periods, or spaces.
- •Hyphen Rule - Cannot start or end with a hyphen.
- •Case - Handles are stored lowercase. Newsletter and @handle share the same name.
- •Uniqueness - {handle}.substack.com is unique — your publication subdomain and @handle must match.
Next Steps
Handle Strategy Guides
Substack Handle FAQ
How do I check if a Substack handle is taken?▼
Enter the handle above — we check {handle}.substack.com and substack.com/@{handle}. If either resolves to a publication, it's taken.
What characters can a Substack handle have?▼
3 to 30 characters: letters, numbers, and hyphens only. No underscores. Cannot start or end with a hyphen, stored lowercase.
How do I claim a Substack handle?▼
Sign up at substack.com/sign-up. Your handle becomes your publication subdomain {handle}.substack.com and your @handle after signup.
Do I need to monitor a Substack handle?▼
Yes if the newsletter name you want is taken. Writers rebrand often — monitoring lets you claim the subdomain when it's released.
Are Substack handles case-sensitive?▼
No. All handles are stored lowercase — MyNewsletter and mynewsletter are the same.
Should my Substack match my other handles?▼
Yes — readers already follow you on Patreon, X, and Instagram. One handle keeps your newsletter discoverable.