Slack fits small teams, agencies, client collaboration best. Its clearest advantage is client channels keep project talk out of email.
- Best for
- small teams, agencies, client collaboration
- Avoid if
- solo freelancers with no recurring collaborators
- Cheapest useful plan
- €8.25/mo · Pro
- Free plan
- Yes
- Setup effort
- easy — minutes
- Main strength
- Client channels keep project talk out of email
- Main limitation
- The free plan only keeps 90 days of message history
- Evidence level
- Vendor documented (1/3)
- Client channels keep project talk out of email
- Very large integration catalogue
- Search across a whole account's history on paid plans
- solo freelancers with no recurring collaborators
- teams that need message history kept for free
What it actually does
channels, threads, huddles, shared channels with clients, app integrations.
The limits to know
- The free plan only keeps 90 days of message history
- Priced per active member, so occasional collaborators still cost a seat
- The advertised 50% is a three-month promotion, not the standing rate
The evidence record
- Evidence level
- Vendor documented — Official documentation and pricing page reviewed and dated. No independent verification, no hands-on test recorded.
- Pricing note
- Observed on the official pricing page with monthly billing selected: Free 0 €; Pro 8,25 € per user/month billed monthly or 7,25 € per user/month billed annually; Business+ 18 € monthly. The page advertised 50% off for three months on Pro and Business+, a limited-time offer shown struck through the standing price — not the price.
- Billing condition
- 8,25 € per user/month billed monthly; 7,25 € per user/month billed annually
- Platforms
- web, macos, windows, ios, android, api
- Integrations
- Google Drive, Notion, Zapier, Asana, GitHub, API
- Setup
- easy — minutes
- Affiliate status
- No affiliate link on this record — no commission.
Pricing & billing commitment
- Rate on record
- €8.25/mo · Pro
- What that figure is
- Month-to-month rate per seat, read on the vendor's monthly view.
- Commitment
- None — payable one month at a time
- The vendor's exact condition
- 8,25 € per user/month billed monthly; 7,25 € per user/month billed annually
What it costs at 1, 3, 5 and 10 users
Slack bills per seat, so the invoice follows head count. Calculated at the rate on record, before tax, with no annual commitment.
| Seats | Per month | Per year |
|---|---|---|
| 1 | €8.25 | €99.00 |
| 3 | €24.75 | €297.00 |
| 5 | €41.25 | €495.00 |
| 10 | €82.50 | €990.00 |
Hands-on test
No automated hands-on test has been completed for this review cycle. This record rests on the vendor's official documentation and pricing page, re-read and dated. We say so rather than imply otherwise.
The research record
First record
Sources
The official pages this record rests on. No tracking links here: these addresses name the vendor.
Evidence freshness
Each kind of check has its own clock and its own threshold. A price ages in weeks and a feature list in months; sharing one date between them would let an old review pass for a recent check.
| Check | When | State |
|---|---|---|
| Pricing | Checked yesterday | Fresh |
| Features | Checked yesterday | Fresh |
| Privacy & data | Never checked | Not independently checked |
| Hands-on test | Never checked | Not independently checked |
| Page review | Checked yesterday | Fresh |
What remains unverified
- No workflow was run inside the product. Everything here comes from the vendor's documentation and public pages.
- Data handling and the privacy policy were not independently verified during this research cycle. We therefore publish no conclusion about security or where data is stored.
- Export terms and the real cost of leaving are not on this record: we have not tested them.
- The price has been read once only. A single observation says nothing about where the price is heading.
Alternatives to Slack
Frequently asked questions
What is Slack?
Slack is a tool from Salesforce, in the communication and productivity categories. It is mainly used for: team messaging, client channels, file sharing.
How much does Slack cost?
The paid entry point is €8.25/mo · Pro. Month-to-month rate per seat, read on the vendor's monthly view. The exact condition attached to that figure: 8,25 € per user/month billed monthly; 7,25 € per user/month billed annually. Read on the official pricing page on 12.09.2026. Prices move quickly — confirm before subscribing.
Does Slack have a free plan?
Yes. Slack publishes a permanent free plan. Check this before settling on it: the free plan only keeps 90 days of message history.
Who is Slack for — and who is it not for?
Good fit: small teams, agencies, client collaboration. Not for: solo freelancers with no recurring collaborators; teams that need message history kept for free.
What is the main limitation of Slack?
The free plan only keeps 90 days of message history. Our evidence level on this record: Official documentation and pricing page reviewed and dated. No independent verification, no hands-on test recorded.