facebook messenger multiple logins app?

hey guys any suggestions on a facebook app, or bot thatll let me log into multiple facebook accounts to reply to messages on all at once? I have a marketing strategy that requires me to do this and its a pain having multiple browsers and computers up.

Here you go: Search The MarketPlace For Social Media Multi-Account Management Software

Check the available tools there, compare them, and decide on the one that best fits your needs.

Make sure that you use dedicated proxies to keep your accounts safe, and also avoid sending the same message through multiple accounts.