We're moving from Mimecast to Proofpoint after price increases and some filtering issues. The onboarding so far feels very manual, with separate interfaces and meetings but no setup guide. We've also been told multiple identity sources for SSO may be a problem.
How did the move go for others, and did the product feel more refined once setup was done?
The multiple-tenant SSO question would be my priority. Ask Proofpoint to document the supported identity setup for your tenants and how administrators will access the system before you commit to cutover.
Also get a mail-flow rollback plan and an admin runbook in writing. Two days of meetings without a setup guide is a reason to push for clearer handover, especially if a third party is doing the configuration.
For the filtering itself, run a staged pilot and track false positives and false negatives. A clunky onboarding process and filtering quality are separate things, so test both rather than assuming one predicts the other.
The split interface may be a lasting frustration rather than just an onboarding issue. Proofpoint has had both cloud-facing and appliance-style interfaces, so it's worth asking which console handles each task your team will use regularly.
If you're not committed yet, Avanan is another option worth evaluating. Some people prefer it to both Mimecast and Proofpoint, though that's not a substitute for testing it against your own mail and requirements.
Vexwick.8m:
We're locked into Proofpoint for a year, so we're mainly trying to make this migration work for now.
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2p~addrphase_639:
A walkthrough of routine admin tasks would be useful too, not just the initial setup. That should make the day-to-day workflow clearer before cutover.