1.  [Clacky](https://clacky.app/)
2.  ›
3.  [A–Z](https://clacky.app/a-z/)
4.  ›
5.  Crosspost to Bluesky and Mastodon

Use case

# Crosspost to Bluesky and Mastodon in one go

Posting the same thing on Bluesky and Mastodon? In Clacky’s Calendar you write it once, pick both accounts, and schedule it. Clacky checks each platform’s limit: 300 on Bluesky, 500 on Mastodon.

[Try free for 7 days](https://clacky.app/try/)[Pricing →](https://clacky.app/#plans)

![Clacky’s composer: one post to several platforms, each limit checked](https://clacky.app/features27/cal-compose-light.webp)![Clacky’s composer: one post to several platforms, each limit checked](https://clacky.app/features27/cal-compose-dark.webp)

## How

-   Connect Bluesky (handle + app password) and Mastodon (your server + an access token) under Accounts in the Calendar.
-   Click New post, write it, and pick both accounts. Add Telegram, Discord or X if you like.
-   If it’s too long for one, Make it fit helps, or Tailor per platform gives that one its own text.
-   Schedule it, or Post now and confirm.

## Account sets and signatures

A set picks several accounts in one click (say, “Short posts” for X, Bluesky and Mastodon). A signature is added to the end of a post only where it fits. Both work in the Calendar and from Claude.

## Questions

Does Bluesky count characters the same as Mastodon?

Not quite. Bluesky counts graphemes (what you see as one character) up to 300; Mastodon counts characters up to 500. Clacky uses each platform’s own rule.

Can I add X too?

Yes. With your own X API keys Clacky posts it; without them, the X post waits for you with Copy and Open X.

Facts checked on 17 October 2026.

Related

-   [Bluesky](https://clacky.app/calendar/bluesky/)
    
    Plan and schedule Bluesky posts from Clacky’s Calendar on your Mac: write once, check the 300-character limit, pick a time. How to connect it.
    
-   [Mastodon](https://clacky.app/calendar/mastodon/)
    
    Plan and schedule Mastodon posts from Clacky’s Calendar on your Mac: write once, check the 500-character limit, pick a time. How to connect it.
    
-   [Calendar platforms](https://clacky.app/calendar/)
    
    Schedule posts to Bluesky, Mastodon, Telegram, Discord and X from your Mac today. Instagram, Facebook, Threads, TikTok and more: honest status.
    
-   [Social media calendar for Mac](https://clacky.app/use/social-media-calendar-mac/)
    
    Plan and schedule posts from a Mac app: write once, check every platform’s limit, drop it on a best-time day. Bluesky, Mastodon, Telegram, Discord, X today.
    
-   [X](https://clacky.app/calendar/x/)
    
    Plan and schedule X posts from Clacky’s Calendar on your Mac: write once, check the 280-character limit, pick a time. How to connect it.
    

[A–Z →](https://clacky.app/a-z/)[Pricing →](https://clacky.app/#plans)[Every feature →](https://clacky.app/features/)

## Make something on your Mac today.

Seven days free, every feature, cancel anytime.

[Try free for 7 days](https://clacky.app/try/)