Customize email requirements¶ ↑

By default, Rodauth requires emails to have at least 3 characters and at most 255 bytes. You can modify the minimum and maximum length:

plugin :rodauth do
  enable :login, :logout, :create_account

  # Require emails to have at least 5 characters
  login_minimum_length 5

  # Don't allow emails longer than 100 characters
  login_maximum_length 100

  # Don't allow emails larger than 200 bytes
  login_maximum_bytes 200
end

You can also override email address validation, and do more advanced email checks, such as checking whether the email address exists using the Truemail gem:

require "truemail"

Truemail.configure do |config|
  config.verifier_email = "verifier@example.com"
end

plugin :rodauth do
  enable :login, :logout, :create_account

  login_valid_email? do |email|
    super(email) && Truemail.valid?(email)
  end
end