Pick based on your constraints (not “best overall”)
For agencies, the right chat tool is the one that keeps delivery moving without turning into a firehose. Decide based on: (1) client/guest access, (2) how much structure you can enforce, and (3) whether you need meetings/voice built in.
Quick comparison
Jump to the tool sections below for details.
| Tool | Best for | Watch out |
|---|---|---|
| Pumble | Agencies that want Slack-like chat + built‑in voice/video | Fewer enterprise add‑ons than Slack; keep channel hygiene strict |
| Microsoft Teams | Teams living in Microsoft 365 (Outlook/SharePoint/Meetings) | Can feel heavy; permissions & guests take discipline |
| Discord | Lightweight internal comms + communities | Not built for compliance-heavy client work by default |
Pumble
Best for: agency teams that want Slack-like channels with simpler pricing, plus built‑in voice/video so you don’t juggle tools.
- Great fit if you want clear internal channels (ops, delivery, sales) without over-engineering.
- Built‑in calls can reduce “tool switching” for quick syncs.
- Works well as the default team chat, with client comms pushed to email/portal when needed.
Prefer homepage? Visit Pumble
Microsoft Teams
Best for: agencies already paying for Microsoft 365 who want chat + meetings + files in one place.
- Solid if your clients are also in Microsoft and expect guest access in Teams.
- Strong calendar/meeting integration.
- Good for “one place” comms — but you’ll need channel rules to avoid sprawl.
Discord
Best for: community-style collaboration, lightweight internal chat, and teams who like voice rooms.
- Fast and flexible for internal use.
- Great voice experience.
- Use caution for client delivery where compliance, auditing, or strict permissioning matters.
Bottom line
If you want the closest “Slack feel” with simpler pricing and built‑in calls, start with Pumble. If your agency runs on Microsoft 365, Teams is the obvious default. Discord is best kept for internal or community-style collaboration.