overleaf/overleaf · error

invalid_email

Error message

invalid_email

What it means

Validation branch in inviteToProject: EmailHelper.parseEmail returned null/empty for the submitted invite email address, so the invite request is rejected with 400 and errorReason 'invalid_email' before any invite is created.

Source

Thrown at services/web/app/src/Features/Collaborators/CollaboratorsInviteController.mjs:144

  } else {
    allowed = await LimitationsManager.promises.canAddXEditCollaborators(
      projectId,
      1
    )
  }

  if (!allowed) {
    logger.debug(
      { projectId, email, sendingUserId },
      'not allowed to invite more users to project'
    )
    return res.json({ invite: null })
  }

  email = EmailHelper.parseEmail(email, true)
  if (email == null || email === '') {
    logger.debug({ projectId, email, sendingUserId }, 'invalid email address')
    return res.status(400).json({ errorReason: 'invalid_email' })
  }

  const underRateLimit =
    await CollaboratorsInviteController._checkRateLimit(sendingUserId)
  if (!underRateLimit) {
    return res.sendStatus(429)
  }

  const shouldAllowInvite =
    await CollaboratorsInviteController._checkShouldInviteEmail(email)
  if (!shouldAllowInvite) {
    logger.debug(
      { email, projectId, sendingUserId },
      'not allowed to send an invite to this email address'
    )
    return res.json({
      invite: null,
      error: 'cannot_invite_non_user',

View on GitHub (pinned to 28ad3b03b7)

Solutions

1. Correct the email address syntax and resubmit
2. Trim/clean the input before sending the request

When it happens

Trigger: Thrown at services/web/app/src/Features/Collaborators/CollaboratorsInviteController.mjs:144 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of overleaf/overleaf@28ad3b03b7 (2026-09-03). Data as JSON: /api/errors/01c856a9d96ba170. Report an issue: GitHub.