> ## Documentation Index > Fetch the complete documentation index at: https://docs.tightknit.ai/llms.txt > Use this file to discover all available pages before exploring further. # Message Blaster > Write, review, and send Slack messages to your community from Studio, together with your team, now or at a time you schedule. > [!NOTE] > > Message Blaster is in **beta**. It is off by default and available to admins only. Contact your Tightknit representative to enable it for your community. **Message Blaster** is where your team writes Slack messages for the community: announcements, newsletters, event reminders, or a note to a handful of members. You build the message from blocks with a live Slack preview, share the draft with teammates to review and comment, then post it in a channel or send it as direct messages, straight away or at a time you choose. Open it at **[Message Blaster](https://studio.tightknit.ai/-/message-blaster/messages)** in the Studio sidebar, under **Engagement**. > [!TIP] > > **Did you know you can draft messages with our [MCP server](https://docs.tightknit.ai/integrations/mcp.md#message-blaster) too?** Try asking your agent: *"Draft a Message Blaster message announcing next week's AMA, and share it with me to review."* ## The Messages list The Messages list shows every message you can open, most recently edited first. Select **New message** to start one. Use the first dropdown to choose whose messages to show: | Option | What it shows | | - | - | | **All** | Every message you can open. | | **Mine** | Messages you own, including ones handed to you. | | **Shared with me** | Messages someone shared with you by name. | | **All Studio** | Messages their owners opened to everyone who can use Message Blaster. | | **No owner** | Unsent drafts whose owner can no longer open Message Blaster. See [Take over a draft](#take-over-a-draft). | Use the second dropdown to filter by **Draft**, **Scheduled**, or **Sent**. The **Sent** view adds a **Recipients** column with how many channels and members each message reached, and how many failed or were skipped. Each message has a status: | Status | What it means | | - | - | | **Draft** | Not scheduled or sent yet. | | **Scheduled** | Waiting to send at a set time, shown under the badge. | | **Sending** | Going out now. | | **Sent** | Finished with no failed deliveries. Members Tightknit had to skip, such as deactivated accounts, are counted in the **Recipients** column. | | **Partly sent** | Reached some recipients but not all. | | **Failed** | No delivery was confirmed. A delivery Slack couldn't confirm may still have arrived, so check [unconfirmed deliveries](#track-deliveries-and-retry) before retrying. | | **Reached no one** | Finished sending without reaching any recipient. | From a row's menu, select **Duplicate** to copy a message into a new private draft, or **Delete** to delete a draft you own. Deleting a scheduled draft also cancels its send, and can't be undone. ## Write a message Select **New message** on the Messages list, or go to **[New message](https://studio.tightknit.ai/-/message-blaster)** directly, to open the composer. The left side is a palette of blocks, the middle is your message, and the preview shows how it will look in Slack, in the same light or dark theme as Studio. The palette starts in basic mode, with the blocks most messages need: a header, a divider, rich text, and an image. Select **Advanced** to see every Slack Block Kit block, such as sections, buttons, tables, and cards, and **Basic** to go back. To add an image from your computer, drag a PNG, JPEG, or GIF file onto the message. Or open an image block, where **Upload image** is the default image source, and drop a file on it or select **Choose file**. Other image fields, such as a section's image, have an **Upload image** button above their URL. Tightknit hosts the image for you, so you don't need a separate image host, and your community's upload size limit applies. In rich text, type `@` to mention a member who has a linked Slack account, or `#` to link a Slack channel. Your workspace's custom emoji are available in the emoji picker. > **Edit the message as Block Kit JSON** > > Select **View JSON** to see the message as Slack Block Kit JSON. Edits you make there update the preview as you type, so you can paste in JSON built elsewhere. **Copy JSON** copies the message to use in another tool. ### Saving and naming Your first change saves the message as a private draft that only you can see. After that, Message Blaster saves a couple of seconds after you stop typing, and the status next to the draft's name shows **Saving…**, **Saved**, or **Couldn't save** with a **Retry** link. A draft is named after its opening text. Select the pencil icon beside the name to rename it. If a teammate saves a newer version while you are editing, your changes aren't saved over theirs. Choose **Save mine as a copy** to keep yours as a new draft, or **Load their version** to continue from theirs. ### Edit a message that's already in Slack To change a message your community already posted, select **Load message** in the composer, then pick a recent message or paste its Slack message link. You can update the original message, or send its content as a new message. You can load messages from public channels that the Tightknit app posted, or that you posted yourself after connecting your Slack account. A message someone else posted can be opened as a new message instead. > [!NOTE] > > Slack only allows a message to be edited for a limited time after it was posted. Once that window closes, send it as a new message instead. ## Send a message When the message is ready, select **Review & send**. The dialog walks through where the message goes and who it comes from, then its settings, with a preview alongside. **1. Add recipients** Select **Add recipients**, then **Channel**, **Direct messages (DMs)**, or both. **2. Choose a channel and who it posts as** Pick a channel. Only channels the Tightknit app has been added to are listed. Under **Post as**, each option shows the name and icon the message will carry: * **Your Slack account** — posts as you. Select the Slack sign-in button if your account isn't connected yet. The channel list is then limited to channels you're a member of. * **The Tightknit app** — posts as the Tightknit bot, so it isn't attributed to you. * **Your community** — posts as the bot with your community's name and icon. **3. Choose members to direct message** Pick up to 50 members with a linked Slack account. Each member receives the message separately, as a direct message from your Slack account or from the Tightknit app. **4. Review the settings** **Show link previews** adds Slack's preview cards under links. It is on by default. To send later, turn on **Schedule for later**. See [Schedule a message](#schedule-a-message). **5. Send** Select **Send message**, or **Schedule send**. The draft's page then follows each send as it goes. Sending locks the draft so its content matches what was sent. To reuse a sent message, choose **Duplicate** from the draft's actions menu. ### Publish to your community site When you post as the Tightknit app or your community in a channel whose feed appears on your [community site](https://docs.tightknit.ai/community-site/overview.md), turn on **Immediately publish to site** to post the message there too. When you post as yourself in a channel that publishes new messages automatically, the message appears on the site anyway. The channel must be activated for Tightknit. See [Activate a channel](https://docs.tightknit.ai/channels-and-feeds/activate-channel.md). ## Schedule a message Turn on **Schedule for later** in the send dialog, then pick a date, a time, and a time zone. The time zone defaults to your browser's, and the dialog confirms the time in your own zone when you pick another one. A message can be scheduled from 5 minutes to 90 days ahead. The send uses the draft as it reads when it goes out, so edits made in the meantime are included. If you schedule the message to post from your own Slack account, keep your account connected until it sends. A scheduled draft shows a banner with its send time. Select **Show details** to see where it goes, who it comes from, and who scheduled it. From the banner, editors can: * **Change time** — move the send to another time. Where it goes and who can see it stay the same. * **Cancel send** — stop it from going out. The draft stays as it is, ready to schedule or send again. Scheduled messages also appear on the Studio [Calendar](https://docs.tightknit.ai/studio/calendar.md), where admins can drag them to another day, change their time, or cancel them. Click an empty part of a future day and select **Schedule message** to start a new message that is set to send on that day. ## Track deliveries and retry After a message is sent, its page lists **Where it was sent**: each channel and each set of direct messages, with progress while it sends and the result when it finishes. Select **View channels** or **View recipients** to see each recipient's status, and filter to the ones that **Failed** or were **Skipped**, with the reason for each. Tightknit retries a failed delivery automatically several times before it gives up. If deliveries still failed, select **Retry** (or **Retry N failed**) once you have fixed the cause, such as adding the Tightknit app to the channel. A message sent from someone's own Slack account can only be retried by them. > [!WARNING] > > When Slack can't confirm whether a recipient received a message, the delivery shows as **Unconfirmed**. Retrying it could send that recipient a second copy. When a send starts, the Tightknit app sends a Slack direct message to everyone with access to the draft who can open Message Blaster, followed in the same thread by the outcome. For a draft shared with all Studio users, only its owner is notified. Each message links back to the draft in Studio. > [!NOTE] > > Message Blaster's Slack notices, for sends, shares, hand-offs, and comments, reach only people Tightknit can message in Slack, such as teammates with an active, linked Slack account. Someone it can't reach still sees the draft in Studio. ## Work on a draft with your team ### Share a draft Drafts are private to their owner until shared. Select **Share** on the draft's page, add people by name or email, and choose their role. Each person you add finds it in their Messages list, and Tightknit sends them a Slack message with a link to the draft when it can reach them in Slack. | Role | What they can do | | - | - | | **Can view** | Read the draft and copy it. | | **Can comment** | Read, copy, and comment. | | **Can edit** | Comment, change the draft, and send or schedule it. | Under general access, you can also let **All Studio users** view, comment on, or edit the draft. Only people who can open Message Blaster can be given access. Only the owner can change who has access, delete the draft, or hand it to someone else. To hand it off, select **Make owner** next to a person in the share dialog. Tightknit lets them know in Slack when it can reach them, and you stay on the draft as an editor. ### Comment on a draft Select **Comments** to open the comments panel. Comment on the whole draft, or select **Comment on block** in a block's toolbar to comment on that block. Each block shows how many open threads it has. Mention teammates with `@` to notify them in Slack. Reply to a thread, then select **Resolve** once it's addressed. **Show resolved** brings resolved threads back. Tightknit notifies the draft's owner of new comments in Slack, along with anyone mentioned and, on a draft shared by name, everyone it's shared with, when it can reach them. ### Version history Select **Version history** from the draft's actions menu. **Current version** at the top shows the draft as it reads now, with who last edited it. Below it are earlier versions: one for each save, send attempt, and restore, and one every 5 minutes while someone edits. A version is also saved when someone comes back after 5 minutes away, or when a teammate starts editing. Select **Name this version** to name the current version or any earlier one, so it's easy to find later. To change or remove a name, select **Rename version**. To bring an earlier version back, compare it with the current version, then select **Restore this version**. Restoring adds it as the newest version, so nothing is lost. ### Take over a draft When a draft's owner can no longer open Message Blaster, for example after leaving your team, their unsent drafts move to the **No owner** view. Select **Take over** to become the owner, so you can share, hand off, send, or delete it. ## Share on LinkedIn The **Share on LinkedIn** block adds a button to your message that opens LinkedIn with a post already written, so members can share your news in one click. Find it in the palette's basic mode, or under **Sharing** in advanced mode. ## Related pages * **[Calendar](https://docs.tightknit.ai/studio/calendar.md)** - see and move scheduled messages alongside events, journeys, and polls. * **[Activate a channel](https://docs.tightknit.ai/channels-and-feeds/activate-channel.md)** - let Tightknit post in a channel and publish it to your site. * **[MCP server](https://docs.tightknit.ai/integrations/mcp.md#message-blaster)** - draft and send messages from an AI agent. * **[Access and roles](https://docs.tightknit.ai/studio/access.md)** - who can open Studio and its pages. ## Related topics - [MCP Server](https://docs.tightknit.ai/integrations/mcp.md) - [Branding Guide](https://docs.tightknit.ai/branding.md) - [Message Shortcuts](https://docs.tightknit.ai/slack/shortcuts-and-commands/message-shortcuts.md) - [Send Slack message](https://docs.tightknit.ai/api-reference/messages/send-slack-message.md) - [Glossary](https://docs.tightknit.ai/glossary.md) This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.