Daily digest email not working

Hello – You say “suddenly” – does this mean that daily digests used to work, but that they recently stopped? Did anything on your server change?

Check your SendGrid account to see whether it’s processing the emails. If so, then it’s likely SendGrid’s problem.

Are other emails from BP, such as mention notifications, being sent properly?

Here’s more info on troubleshooting: https://github.com/boonebgorges/buddypress-group-email-subscription/wiki/How-to-troubleshoot-missing-emails