Best Slack Birthday Bots for Small Teams: Choose by Your Real Seat Count

For a small team, the best birthday setup depends less on your total headcount than on who gets counted, how many celebrations you need, and whether anyone wants a public post. A coordinator using Slack reminders can avoid another app.[7] Billy has a documented free threshold below 10 counted seats, while Ricotta advertises a 10-user birthday-bot free plan.[5][6] BirthdayBot advertises an annual free-celebration allowance, but its own pages disagree on the number.[1][2] Use the decision process below before installing anything. Vendor documentation was reviewed on November 13, 2026; we have not installed or tested these apps.

Start with the job, not a ranked list

Ask three questions: (1) Do people opt in to public birthday posts? (2) Does a person need to maintain dates and write messages, or should a bot do that? (3) Do you also need work-anniversary posts, weekend handling, or holiday controls? Our private birthday collection guide offers a consent-first roster checklist. If you only need a coordinator prompt for a few dates, Slack documents personal reminders and channel /remind messages on all plans. That is not a bot that maintains a birthday roster or creates a personalized annual greeting.[7] See the no-bot reminder guide for the manual workflow.

The small-team shortlist

| Option | Published free entry | What to check before choosing | | --- | --- | --- | | Slack reminders | Built-in reminders are available on all plans.[7] | A coordinator owns consent, the roster, date review, and actual greetings; annual birthday recurrence is not established by Slack's documented repeat examples. | | Billy by BuddiesHR | Free while Billy counts fewer than 10 seats; at 10 or more, a 30-day trial begins, then subscription is needed.[3][5] | A channel set to “All workspace members” counts eligible workspace members; otherwise unique members of Billy channels count. Bots, guests, and deactivated members are excluded.[4] | | Ricotta Birthday Bot | Product page advertises a 10-user Free plan with the Classic Content Pack.[6] | The page also promotes a 30-day trial; confirm what happens after the trial, how users are counted, and whether desired content remains free. | | BirthdayBot | Pricing page says 15 free birthday celebrations a year, while its getting-started guide says 30.[1][2] | Resolve that conflict with the vendor; its published Standard tier adds work anniversaries.[1] |

This is a documentation comparison, not a tested recommendation or a claim that all free plans are equivalent. The vendors can change terms. Our free-bot comparison explains the entry tiers in more detail; here the emphasis is choosing for a team likely to grow.

Three realistic team scenarios

Eight colleagues, one celebration channel. If Billy counts eight eligible channel members, its documented under-10 rule suggests a continuing free plan; if the channel is configured for all workspace members, count those eligible members instead.[3][4] Ricotta's published 10-user free allowance might fit, but its definition of “user” and trial transition need confirmation.[6] BirthdayBot's annual celebration limit might also fit if the team celebrates fewer events than the actual cap; do not assume the conflicting 15/30 figures have been resolved.[1][2] For a team that prefers human-written messages, a private roster plus Slack reminders may be enough.[7]

Twelve colleagues, all in the celebration channel. Billy's under-10 free rule would no longer apply after its trial for that channel configuration; the provider says the trial starts at 10 seats and messages stop after it ends without a subscription.[3][4] Ricotta's published 10-user free limit may also be exceeded, but ask the vendor how it defines users before assuming a tier. BirthdayBot counts people with known celebration dates as active users for its paid plans according to its pricing FAQ, whereas its getting-started guide describes channel membership; request a written seat estimate because those pages do not align.[1][2][6]

A 22-person workspace with a nine-person opt-in channel. Billy's documented rule counts unique members of its configured channels, unless a channel uses “All workspace members”; a smaller channel can therefore change its seat count, but do not exclude colleagues from celebrations solely to game billing.[4] Ask Ricotta whether its published organization-user tiers apply to the whole organization or a narrower subset. Its birthday page lists a Starter tier up to 25 users, but the visible page does not settle every counting edge case.[6] Compare the actual reach and consent policy before comparing prices.

Compare costs without a misleading headline

Billy's help center lists a one-app rate per counted user, with different monthly and yearly billing; its free threshold is fewer than 10, not “10 or fewer.”[5] Ricotta's birthday-product page shows a 10-user Free plan and paid organization-size bands, plus separate monthly and yearly prices; do not use the unrelated Ricotta games pricing on the same site.[6] BirthdayBot lists paid Standard and Pro starting prices, but the actual charge depends on counted active users, billing term, and plan; its free-celebration count conflicts across official pages.[1][2] A price quote should include your actual seats, billing period, features needed, and what happens after any trial. We did not check checkout totals, taxes, or renewal terms, so there is no reliable all-in cost ranking here.

A fair test before adding real dates

In a temporary or private channel, ask an admin to check installation permissions and use fictional dates to inspect: who can view or change the roster, what message is posted, opt-out behavior, time zone, weekend policy, and whether an anniversary consumes a separate allowance. These are suggested tests, not tests Kelasa conducted. Billy's pricing page advertises birthdays, anniversaries, opt-out, and Friday/Monday weekend management.[8] Ricotta's birthday page advertises anniversary announcements, opt-out, and a custom holiday calendar.[6] BirthdayBot lists anniversaries under Standard.[1] Our weekend birthday guide helps decide the policy before checking product controls. If nobody consents to a public greeting, prefer a private reminder and no automated announcement.

Our recommendation by use case

• Few opted-in dates and a willing coordinator: start with Slack reminders and a restricted roster; revisit when manual upkeep becomes unreliable.[7]
• Fewer than 10 Billy-counted seats, with birthdays and anniversaries: Billy is worth evaluating against its published free rule, after confirming the channel setting and trial behavior.[3][4]
• A team interested in holiday rules or content styles: evaluate Ricotta's advertised controls, then confirm the free-plan user definition and trial conversion yourself.[6]
• A team comparing celebration-volume rather than just seats: ask BirthdayBot to resolve its contradictory free cap and paid-user descriptions before budgeting.[1][2]

Disclosure: Kelasa publishes this guide and offers BirthdayBot, a daily digest for birthdays and work anniversaries in a selected Slack channel and workspace time zone. Explore Kelasa's BirthdayBot overview to see whether that approach fits. Its current public landing page does not establish a price, free tier, weekend shifting, or a tested reliability comparison, so we do not rank Kelasa as the cheapest or “best” option. For a narrower head-to-head, see BirthdayBot vs Billy or Ricotta vs BirthdayBot.

Official pages checked November 13, 2026. No app installation, hands-on Slack test, checkout verification, original screenshot, or independent reliability measurement was performed. Vendor plans may change; confirm terms before entering employee data or buying.

Sources

[1] https://birthdaybot.io/pricing [2] https://birthdaybot.io/getting-started [3] https://buddieshr.com/docs/billy/faq/pricing-and-free-trial [4] https://buddieshr.com/docs/billy/faq/seats [5] https://buddieshr.com/docs/general/account/pricing-free-plan [6] https://www.ricotta.team/slack-birthday-bot [7] https://slack.com/help/articles/208423427-Set-a-reminder [8] https://buddieshr.com/pricing