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How-to guide

Celebrate work anniversaries and birthdays

Work anniversaries and birthdays in Slack, what each person decides, and how administrators set it up.

For Everyone using Shuffl

Have your agent do thisPaste the prompt into Claude Code, Cursor or another agent. It follows this guide over MCP and asks before it changes anything others will see.Show the prompt
Help me with "Celebrate work anniversaries and birthdays" in my Shuffl workspace.

1. Read the guide: https://shuffl.ai/docs/markdown/celebrations
2. Add Shuffl's MCP server: https://shuffl.ai/api/mcp
   Claude Code: claude mcp add --transport http shuffl https://shuffl.ai/api/mcp
   When the browser opens, choose my workspace and allow the access the guide needs.
3. Work through the steps in order: Your anniversary and birthday; For administrators. Do what you can over MCP and tell me which steps only I can do in the browser or in Slack.

Show me what you will change and who it affects, and wait for my yes before publishing, inviting or sending anything.
On this page

App links open your signed-in workspace. Check the selected workspace before making changes.

Your anniversary and birthday

  1. To add your birthday, open Celebrations from Home, or Me, and enter the month and day. Shuffl never imports a birthday and never asks for the year.
  2. To stop a celebration, turn it off there. Anything already scheduled for it is cancelled.

Shuffl celebrates two days: your work anniversary, counted from your start date in People, and your birthday, if you add it. Your workspace switches each one on separately.

On the day, Mello sends you a private Slack note, with Your celebrations to change what is shared (or a note in Shuffl without linked Slack). Coworkers who know you see your day on Home with a Congratulate button.

This week, on Your celebrations, lists coworkers celebrated in a channel in the last seven days. Private or team-only celebrations aren’t listed, and a birthday never shows an age.

Share your celebration?The person celebrating, privately · A few days before the date

ShufflAPP

Your 3-year work anniversary is coming up on October 2, 2026.Should Mello share it in #celebrations?
Share itKeep it private
🔒 Your age is never shared and no message carries the date. If you share it, your manager hears a week ahead. Either way, you get a note on the day.
Your note on the dayThe person celebrating, privately · On the day, shared or not

ShufflAPP

🎉 Happy work anniversary, Jordan Lee! 3 years with us. Thank you for everything you do.
Your celebrations
🔒 Only you got this note. Choose what is shared, any time.
Celebration postThe celebrations channel or the person’s team · On the day, if they said yes

ShufflAPP

Happy work anniversary, Jordan Lee! 3 years with us. Thank you for everything you do.
Work anniversary card: 3 years, Jordan!
Reply in this thread to add a note for Jordan Lee.
The Your celebrations page: Mello’s green panel reading Your birthday is in 58 days, with Only you and Date and age never posted chips and day countdowns to the birthday and work anniversary, then cards to sign, This week with a coworker’s 2-year work anniversary, and the birthday and work anniversary cards.
Each person decides separately whether their birthday and their anniversary are shared.

Who sees what

Your workspace may also post in a Slack channel or message your teammates, but only if you say yes, separately for your anniversary and your birthday.

A week before your first shared day, Mello asks you in a Slack direct message: Share it or Keep it private. Either way, you still get your own note on the day.

Change your answer any time in Slack, on Shuffl’s Home tab or on the web under Celebrations. Saying no cancels any shared message still waiting.

No celebration post or note carries the date or your age; only your manager’s heads-up names the day. A birthday has no year stored at all. An anniversary message can say how many years.

A channel post shows a celebration card with your first name and, for an anniversary, the years. It invites coworkers to reply in its thread to add a note for you.

When you share a day, your manager hears about it a week ahead so they can send a note. A private day stays between you and Mello.

Sign a team card

When someone shares their day, Mello opens a card a week before and asks their teammates and manager to sign it. Add a note writes yours in Slack; each person writes one, changeable until the day.

The card is a surprise: the person gets it on the day in a Slack message from Mello quoting every note, and under Your celebrations. A card nobody signed is never sent.

Cards waiting on your note are listed under Cards to sign on Your celebrations.

Sign the team cardThe person’s teammates, privately · A week before a shared celebration

ShufflAPP

🎉 Jordan Lee's 5-year work anniversary is on October 9, 2026.The team is signing a card for them. 2 people have signed their card so far.
Priya ShahFive years of patient answers and the best onboarding docs we have. Thank you!
Marcus WebbHere’s to the next five.
Add a noteOpen the card
🔒 Jordan Lee sees the card on the day. Until then it's a surprise.
Your team cardThe person celebrating, privately · On the day, if anyone signed

ShufflAPP

🎉 Your team signed a card for your 5-year work anniversary.Here’s what they wrote.
Priya ShahFive years of patient answers and the best onboarding docs we have. Thank you!
Marcus WebbHere’s to the next five.
Aiko TanakaYou made my first week so much easier. Congratulations!
Open your card
A team card for a five-year work anniversary: a green card face reading 5 years, Kwame!, three coloured notes from teammates with their names, and an Add your note box below.
The team signs in secret. The person opens the card on the day.

For managers

A week before a report’s shared anniversary or birthday, Mello sends their manager a Slack direct message with the day and a note to start from. A first year and every fifth year are called out as milestones.

Mello never posts as you. Send the note yourself on the day, or write it now and use Slack’s Schedule message. Mello still sends its own note.

Nothing goes out for a day the person keeps private, or when People lists no manager for them. If their manager changes before the day, the old manager’s heads-up is not sent.

Manager heads-upThe person’s manager, privately · A week before a shared celebration

ShufflAPP

🎉 Jordan Lee's 5-year work anniversary is coming up on October 9, 2026.A note from you on the day means more than one from Mello. 5 years is a milestone worth marking.
Here's a start you can make your own:Happy 5-year work anniversary, Jordan! 5 years is a big one. Thank you for all of it.
Send it to Jordan Lee on the day, or write it now and use Slack's Schedule message. Jordan Lee chose to share this celebration, and Mello still sends its own note.

For administrators

  1. Open Celebrations from the HR workspace. The HR-only tabs are Upcoming, Insights, History and Settings.
  2. Upcoming shows the next 60 days, shared or private. Insights shows how celebrations landed, History every message sent or skipped, and Settings one card each for anniversaries and birthdays.
  3. In a new workspace, pick a starter: Work anniversaries in a channel, Birthdays in a channel, Tell the team about anniversaries, or Private anniversary notes.
  4. It fills in the settings; nothing is turned on yet.
  5. Choose who hears about it: a private note to the person only, also a post in a Slack channel you choose, or also a message to each teammate.
  6. Write the message. Use {name} and {years} for anniversaries, and {name} for birthdays.
  7. Choose the send time. Each message goes out at that time in the person’s own time zone.
  8. How this is sent on each card sums up the timing, privacy and Who sees what.
  9. Choose the send days. Monday to Friday is the default, so a Saturday birthday goes out the Friday before.
  10. Choose On other days, send on: the send day after it for Monday, or all seven days for the day itself.
  11. Choose Turn on, after Preview if you want to check the message. Save without turning on keeps your edits.
The Celebrations page with the Upcoming tab: the next 60 days of anniversaries and birthdays, each row naming the person, the day, the send day when it moves to a working day, how many years and whether it is shared or private.
Upcoming shows what will be celebrated and how, so nothing is a surprise.
Celebration settings: one card for work anniversaries and one for birthdays, each with who hears about it, the send time, the send days, an optional channel, the message with placeholders, a folded How this is sent note and an optional Preview.
Each celebration has its own audience, time, days and message. Preview shows the exact message first.

See how celebrations land

Insights counts celebrations sent in the last 30, 90 or 180 days against the period before. It shows how many, how many people, birthdays and anniversaries, and how many reached a channel or the team.

Notes per card shows how warmly the team signed the cards given. Mello’s line names messages that failed or were skipped, and people who have not said whether to share. Names stay on History.

Celebrations Insights: a period picker for 30, 90 or 180 days, Mello’s line on anything that failed or waits for an answer, four figures (celebrations, people celebrated, seen by the team and notes per card) and a weekly chart of birthdays and anniversaries.
Insights shows how celebrations landed, against the period before.

Start dates

Work anniversaries count from each person’s start date in People. For people who came back, joined through an acquisition or were contractors first, choose whether to count from the latest start date or the first hire date. Changing it reschedules upcoming anniversaries.

People sync keeps the first hire date when your HRIS sends one (BambooHR and Workday do), or when someone whose employment had ended comes back with a later start date.

You can also add a first hire date by hand when you edit a person in People.

The same card lists start dates that look wrong. That means more than 90 days ahead, more than 60 years ago, or shared by five or more people and at least a fifth of everyone.

While anniversaries are on, Mello tells administrators once a year how many it found.

The Start dates card in Celebrations settings: a choice of counting anniversaries from the latest start date or the first hire date, how many people have an earlier first hire date, and a list of start dates that look wrong with the people on each.
Choose which date counts, and fix the dates that look wrong before they celebrate the wrong day.

When messages are sent

Each message goes out on the day if it is a send day, otherwise on the nearest send day before or after, as you chose; Upcoming shows when.

Each message is sent at most once, even on retry, and one not sent by the end of the person’s send day is skipped, never sent late.

Turning a celebration off, a person opting out, saying no to sharing or employment ending cancels what was scheduled.

A rehired person’s anniversary counts from their new start date, unless you chose the first hire date under Start dates. A February 29 anniversary or birthday is celebrated on February 28 in other years.

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