Enable Gmail SMTP on Overleaf Community Edition (CE)

overleaf_smtp_gmail_community_edition.md

I'll leave my workaround to use with gmail for future reference after testing every suggestion here without success:

• Define SMTP_USER and SMTP_PASS

     SHARELATEX_EMAIL_SMTP_USER=your_email
     SHARELATEX_EMAIL_SMTP_PASS=app_password # requires 2fa enabled
  

• Connect to sharelatex container (docker exec) and run this command:

  $ cp /overleaf/services/web/app/src/Features/Email/EmailSender.js /var/lib/sharelatex

• Move the file EmailSender.js in your ${SHARELATEX_DATA_PATH} (defined in config/overleaf.rc) to wherever you want (I recommend toolkit root folder)
• Add this definition in line 60 of EmailSender.js (right before client = nodemailer.createTransport(smtp))

  smtp.service = "gmail";

• Edit lib/docker-compose.base.yml to bind the new file. Add this line in the volumes section

  - ../EmailSender.js:/overleaf/services/web/app/src/Features/Email/EmailSender.js:ro
  

  Use the correct relative/absolute path to your EmailSender.js

Run bin/docker-compose down && bin/docker-compose up -d.

Yes, I've tried with "forgot password" and it seems to work. I've uncommented SMTP_USER and SMTP_EMAIL, I think the default port is 465 and host smtp.gmail.com