Blotato vs PostFast: Social Media Limits Your Agent Hits First
Blotato vs PostFast for social media automation: daily posting caps, X link allowances, queue sizes and DMs, compared limit by limit.
Blotato vs PostFast is a choice between Blotato, one key an AI agent uses to publish, answer Instagram and Facebook DMs and run DM automations, and PostFast, a social media scheduler that ships an API, an MCP server and a comment inbox. Which one fits depends on the limit your agent hits first, such as the 14 X posts with a link that PostFast’s entry plan allows each month. Both publish their limits, and they differ in both directions.
Blotato is an app I built, so I took every number below from the two companies’ own pricing pages, fair-usage terms and help docs, and I link those pages as the limits come up.
Blotato vs PostFast: The Limit That Decides It
Look at what your agent does after it posts. An agent posting to four accounts or fewer costs less on PostFast, and one that needs Telegram or Google Business Profile can only use PostFast of these two. An agent that answers Instagram or Facebook DMs, or runs reply-only keyword DM automations on those two networks, is the case for Blotato, because PostFast’s inbox works comments, not DM threads. And an agent that posts X links most days should check PostFast’s X allowance first, since its entry plan runs out mid-month.
On price, PostFast bills in euros and is cheaper at four accounts or fewer, from 21 to 30, and from 41 to 100, while our $29 Starter plan covers 20 accounts, the band where we come out ahead.
Two Ways an Agent Posts, Defined Side by Side
In category terms, Blotato is agent infrastructure for social media marketing: one API key and hosted MCP server that an agent uses to publish to 9 platforms, answer Instagram and Facebook comments and DMs, run DM automations and read analytics. PostFast is a social media scheduler with a REST API, a hosted MCP server and a comment inbox on 4 platforms. So the split is the private side of social. PostFast’s agent publishes to more places and works more comment threads, while ours can hold a DM conversation and run the automations that answer one.
PostFast is run by Kohi Solutions Ltd and pitches “a week of social media, scheduled in minutes.” Every plan includes all 11 of its platforms, the API, the MCP server and its comment inbox. Third-party review coverage is still thin, so judge it on its docs and a trial run rather than on aggregate ratings.
| PostFast | Blotato | |
|---|---|---|
| What it is | Scheduler with an API, MCP server and comment inbox on every plan | One API key and hosted MCP server for publishing, comments, DMs, DM automation and analytics |
| Publishing reach | 11 platforms, including Telegram and Google Business Profile | 9 platforms |
| Hosted MCP | mcp.postfa.st/mcp, OAuth, 31 tools | mcp.blotato.com/mcp, OAuth or API-key header, 35 tools |
| What the agent can answer | Comments on TikTok, Instagram, Facebook and Threads | Comments and DMs on Instagram and Facebook |
| DM automation | Not listed on its pricing page or docs | Keyword-triggered, Instagram and Facebook, reply-only |
| Human approval | New posts held for your yes on the hosted connector | No approval step |
| What the bill tracks | Plan tier, by accounts, users and workspaces, in EUR | Plan tier, by connected accounts, in USD |
Every Daily Posting Cap, Platform by Platform
These are the caps an agent hits first, because they apply per account per day, and most of them stay the same on every plan. PostFast lists one daily cap per platform in its fair usage policy, and its caps reset at midnight UTC. Ours live in the platform posting limits section of our help docs, and our per-platform limits table sets them beside what each network allows on its own.
| Platform | PostFast, per account per day | Blotato, per 24 hours |
|---|---|---|
| 35 | 50 per account | |
| 25 | 25 per Page | |
| 35 | 50 per profile and per company Page | |
| TikTok | 15 | 25 per account, and Starter posts to 3 TikTok accounts per 24 hours |
| YouTube | 10 | 10 per channel on Starter, 25 on Creator and Agency |
| 15 | 10, 20 or 50 for new connections, set by the account’s monthly views | |
| X | 6 to 9 by plan, plus an organization-wide pool | No X cap listed |
| Threads | 65 | No Threads cap listed |
| Bluesky | 70 | No Bluesky cap listed |
| Telegram | 25 | Not a Blotato platform |
| Google Business Profile | 5 | Not a Blotato platform |
Read the table by where your agent posts most. Our Instagram, LinkedIn and TikTok caps run higher per account, and Facebook is a tie. PostFast also publishes caps for Threads and Bluesky, where our doc lists none, and it reaches two platforms we do not.
Two details need the fine print. Our TikTok row has a second limit on Starter: it publishes to at most three different TikTok accounts in a rolling 24 hours, a cap Creator and Agency do not have. Our Starter error message for that limit still says 10 posts per account while the validator allows 25, a conflict our own docs flag. And “no cap listed” means our posting-limits doc names none, not that the platform’s own limits stop applying.
How PostFast Rations X Posts
X is the one platform where PostFast’s limits change by plan, and they stack. Each plan caps how many X accounts you connect, how many posts each account sends a day, how many the whole organization sends a day, and how many X posts with a link go out each month.
| PostFast plan | X accounts | Posts per account per day | Posts per organization per day | Link posts per month |
|---|---|---|---|---|
| Starter | 2 | 6 | 8 | 14 |
| Creator | 6 | 6 | 14 | 32 |
| Growth | 12 | 6 | 32 | 44 |
| Pro (Agency) | 36 | 9 | 96 | 60 |
| Enterprise | 45 | 9 | 280 | 120 |
The link allowance is the limit that runs out first. PostFast counts any X post whose text or first comment carries a link, a link in both counts twice, and the pool is shared across every workspace. An agent that shares one article a day on Starter, starting on the 1st, uses up the month’s 14 link posts by the 14th, and the allowance resets on the 1st of the next month.
If X with links is the center of your plan, that is a documented difference worth testing at your own volume: Blotato’s posting-limits doc lists no X allowance of this kind, which is not the same as no limit, and X’s own rules apply on either tool.
When Your Agent Hits a Cap Mid-Run
The two tools count a day differently, and that changes how a batch job behaves near the limit. PostFast resets every daily cap at midnight UTC. Several of ours, including TikTok, YouTube and Pinterest, are written as rolling 24-hour windows, so a slot frees up 24 hours after the post that used it.
That difference is easy to see with a big queue. On PostFast, an agent could send its 35 Instagram posts just before midnight UTC and a fresh 35 just after. On a rolling window, the count looks back a full 24 hours from whenever the agent tries.
PostFast also tracks each cap per social account across everything you own. If the same Instagram account is connected in two workspaces or two organizations, both connections share one daily limit, and reconnecting the account does not add capacity. Its fair-usage terms add that limits “may change without notice” and that it may use throttling, queuing or temporary blocks to keep usage safe.
On Blotato, the publish call hands back a postSubmissionId, and the post is not confirmed until a status check on that ID reads published. A failed post reads failed, and one queued for later reads scheduled, so the agent should stop waiting at either. Our docs tell agents to read a Pinterest account’s cap from the error it returns, so the agent can see why instead of guessing. PostFast’s signed webhooks for published and failed posts are still listed as in progress on its roadmap, and our docs list no post-status webhook either, so on both tools today your agent polls for the result.
The Caps Each Plan Puts on Accounts, Queue and Calendar
A daily cap slows an agent down, while a plan cap decides how many accounts and posts it can manage at all. Both vendors publish these too, PostFast on its pricing page and Blotato in its plan limits reference.
| Plan limit | PostFast | Blotato |
|---|---|---|
| Accounts per plan | 4, 12, 30, 120, 500 | 20, 40, 100 |
| Users | 1 on Starter, then 5, 8, 15 or 30 per workspace | One user per Blotato subscription |
| Queued posts | 150, 3,000, 5,000, then a fair-usage ceiling of 50,000 and 80,000 on the “Unlimited” tiers | 200, 1,000, 3,000 |
| How far ahead you can schedule | Up to a year, every plan | 9 months, every plan |
| Analytics | Limited on Starter, full from Creator, on 7 platforms with LinkedIn Pages only | 8 platforms, not LinkedIn, with fewer metric fields on Starter |
| API and MCP on the trial | Yes, 7 days, no card | No, the trial covers the web app only |
On queue size, our Starter holds more queued posts than PostFast’s Starter, and PostFast’s Creator and Growth hold far more than ours. The calendar is a clean PostFast win: if your agent schedules a full year of evergreen posts in one pass, PostFast takes it and we stop at nine months.
Where PostFast Gets Further
Five of our gaps show up most clearly next to PostFast, each for a specific kind of setup.
Reach. Telegram and Google Business Profile are on every PostFast plan, and Blotato publishes to neither.
A wider comment inbox. Its Social Inbox answers and hides comments on TikTok, Instagram, Facebook and Threads, and deletes them everywhere except Threads, with LinkedIn listed as coming soon. It can also send an Instagram private reply, once per comment and within 7 days. Our comment tools cover Instagram and Facebook only.
A review step for agent posts. On PostFast’s Claude connector, new posts are created on hold and go out only after you say yes, and replies and deletions show a preview first. The npm package, which takes an API key instead of a login, ships 25 tools and no approval tool. If a human sign-off matters more to you than anything else here, the review step a Blotato setup needs is covered in our Loomly comparison.
A trial that includes the agent. PostFast’s 7-day trial needs no card and covers the API and both connectors. Ours collects a card and excludes the API and MCP server.
Teams and clients. Every PostFast plan has Admin, Editor and Client roles with approvals, seats scale from 1 to 30 per workspace, and Pro and Enterprise add white-label reports. A Blotato account has a single user, with no separate teammate logins or roles.
What Blotato Adds: DMs and the Rules That Answer Them
The gap PostFast leaves is the private side of the inbox. Its own feature list describes the Social Inbox as comments only, not direct messages. The one exception is the Instagram private reply, which lands in the commenter’s messages, and its API reference lists no DM automation. That matters if your agent’s job does not end at publishing.
Through Blotato, an agent reads and answers Instagram and Facebook DMs, and it can create keyword automations that reply when someone comments a word on a post. The automation docs describe the match as a case-insensitive substring, so “price” also fires on “pricey.” Each automation also posts a public reply under the triggering comment by default, which you can turn off. Our DM automation API guide walks through a full build.
Analytics is the second difference. Our post analytics cover X and Bluesky among 8 platforms, while PostFast’s post metrics cover neither, though it does chart Bluesky follower growth. Ours do not cover LinkedIn yet, where PostFast reports on Pages.
Does your agent need to hold a DM conversation, not just reply under a post? Of these two, only Blotato does that, and only on Instagram and Facebook, while it publishes to 9 platforms against PostFast’s 11.
Blotato vs PostFast Pricing by Account Count
Both tools bill per plan, not per channel or seat, so the comparison comes down to where your account count lands. PostFast prices in euros and we price in dollars, so check today’s rate before treating any row as a tie.
| Your accounts | PostFast, monthly billing | Blotato, monthly billing | Cheaper |
|---|---|---|---|
| 1 to 4 | Starter, €12 | Starter, $29 | PostFast |
| 5 to 12 | Creator, €29 | Starter, $29 | Blotato, slightly, while a euro costs more than a dollar |
| 13 to 20 | Growth, €49 | Starter, $29 | Blotato |
| 21 to 30 | Growth, €49 | Creator, $97 | PostFast |
| 31 to 40 | Pro (Agency), €99 | Creator, $97 | Blotato, slightly, while a euro costs more than a dollar |
| 41 to 100 | Pro (Agency), €99 | Agency, $499 | PostFast, by a wide margin |
| 101 to 120 | Pro (Agency), €99 | Above our largest plan | PostFast |
PostFast’s yearly billing works out to €10, €24, €40, €82.50 and €199 a month. One catch for X-heavy setups: each PostFast plan also caps X accounts, at 2, 6, 12, 36 and 45, so an account mix with many X profiles can push you a tier higher than the total suggests.
At the entry tier, here is what each plan buys.
| At the entry tier | PostFast Starter (€12/mo) | Blotato Starter ($29/mo) |
|---|---|---|
| Social accounts | 4 | 20 |
| X posts with a link | 14 a month across the organization | No X allowance listed |
| Queued posts | 150 | 200 |
| Comment inbox | TikTok, Instagram, Facebook, Threads | Instagram, Facebook |
| DMs and DM automation | Not listed | Instagram and Facebook, 1,000 active contacts a month |
| API and MCP | Included, trial too | Included on the paid plan |
Our Starter costs more on the sticker and buys five times the accounts plus the DM layer. That trade pays off only for a reader who needs more than four accounts or the DMs.
Three cases change that math. Below five accounts, €12 against $29 is a real saving, and the extra accounts are worth nothing if you never connect them. If your agent only posts and never answers anyone, the DM rows drop out of the comparison. And from 21 to 30 accounts, and again from 41 up, PostFast’s €49 and €99 plans undercut our Creator and Agency plans by a wide margin.
Limits on Our Side Worth Knowing First
Three of our limits matter most against PostFast.
Our calendar stops at nine months on every plan, where PostFast schedules a year out on all of its plans. Our Creator plan queues 1,000 posts at once, a third of the 3,000 that PostFast’s Creator plan holds, so a bulk-loading agent on that tier fills our queue first. And Starter analytics return 25 metric fields per post and collect for 30 days after publishing, while Creator returns every field and Agency collects for 90 days.
How I Would Pick Between Them
Start from the limit your agent will hit first. An agent that posts to four accounts or fewer, or to Telegram or Google Business Profile, costs less on PostFast, and one that needs a person to approve each post gets that step built in there. An agent that answers Instagram and Facebook DMs or runs reply-only automations on them fits Blotato, if 9 platforms and a nine-month calendar are enough. Between 13 and 20 accounts, Blotato is also the cheaper of the two.
Our trial covers the web app and not the API or MCP server, so an agent build should start on a paid Starter plan. If you want to see the web app first, the 7-day Blotato trial covers that.
Blotato vs PostFast FAQs
Does PostFast have an MCP server?
Yes, two routes. The hosted connector at mcp.postfa.st/mcp signs in over OAuth and gives Claude or ChatGPT 31 tools, holding new posts until you approve them. The npm package postfast-mcp takes an API key and ships 25 tools, with no approval tool. Both need a running PostFast trial or plan.
Can PostFast answer Instagram DMs?
Not as conversations. Its Social Inbox is comments only, on TikTok, Instagram, Facebook and Threads. Its one DM-shaped tool is a private reply to an Instagram comment, sent once within 7 days, which lands in the commenter’s messages. Blotato reads and answers Instagram and Facebook DMs and runs reply-only DM automations on both.
Is PostFast cheaper than Blotato?
At 1 to 4, 21 to 30, and 41 to 100 accounts, yes, and above 100 PostFast is the only one of the two with a plan. PostFast’s €12, €49 and €99 plans undercut our $29, $97 and $499 tiers in those bands. Between 13 and 20 accounts our $29 Starter is cheaper than PostFast’s €49 Growth plan. At 5 to 12 and 31 to 40 accounts the two list nearly the same number, €29 against $29 and €99 against $97, so the exchange rate decides it.
Does PostFast limit how often an agent can post to X?
Yes, by plan. Starter allows 2 X accounts, 6 posts per account a day, 8 per organization a day and 14 posts with a link a month. A link in both a post and its first comment counts twice. Enterprise raises those to 45 accounts and 120 link posts a month.
Can I test the API on either free trial?
On PostFast, yes: the 7-day trial covers the API and both connectors without a card. On Blotato, no. Our trial covers the web app, and generating an API key ends the trial and starts the paid subscription.
Which platforms does PostFast reach that Blotato does not?
Telegram and Google Business Profile. Every other platform PostFast lists, Blotato also publishes to: X, LinkedIn, Facebook, Instagram, Pinterest, TikTok, Threads, Bluesky and YouTube.