https://looksend.app/ weekly 1 https://looksend.app/email-mobile-preview monthly 0.8 https://looksend.app/dark-mode-email-test monthly 0.8 https://looksend.app/preview-text-checker monthly 0.8 https://looksend.app/gmail-promotions-tab monthly 0.8 https://looksend.app/litmus-alternative monthly 0.8 https://looksend.app/app weekly 0.7 https://looksend.app/privacy yearly 0.3