Build viral campaigns like
Robinhood
and
Clubhouse
Grow your audience with built-in referrals
Jason invited Vanessa
Jason climbed up to #110
+1
Vanessa joined through Jason’s invite
+1
Jason signed up
+1
Helene joined through Vanessa’s invite
Vanessa invited Helene
1
Collect or import sign ups
Form builder
Use our building blocks. Add your brand and edit every detail.
Name
Richard Hendricks
Sign up
Custom emails
Show off your brand with the easiest email editor you’ve used.
Sign up page
Connect your own domain or use your unique Letterby page.
Import contacts
Easily import your subscribers from other tools.
Website widget
Design your embed form in our editor and copy the code into your website.
2
Let people climb up the list
Users invite friends to climb up
Create viral loops through organic referrals.
#110
#44
#242
Give points for actions your users take
Get a live deep dive into when you’re collecting most sign ups.
Invited someone +10
Invited someone +10
Joined event +5
Invited someone +10
Filled out questionnaire +5
Finished onboarding +5
Invited someone +10
Invited someone +10
3
Stay in touch with them
Newsletters & email campaigns
The easiest email creation experience you’ve ever had.
Select who you’re sending to
Smart audiences to make your launch efficient.
Contact management
Letterby comes with a CRM that focuses on the necessities.
Integrations
Connect Letterby to any platform using Zapier, API or webhooks.
Built in analytics
Get a live deep dive into when you’re collecting most sign ups.