BlogDM automation tools compared
LinkDM vs InstantDM 2026: price, limits and features
LinkDM sells a monthly pool of DMs, with top-up credits that never expire, and puts 3 accounts on Pro. InstantDM caps how many automations run an hour, and its single-account plans hold one account each.
The short answer
LinkDM bills by DMs sent: Pro is $19 a month for 3 Instagram accounts and 25,000 DMs. InstantDM bills a flat price per account and caps the pace: Legend Pro is $12 a month for 1 account, up to 800 automations an hour. InstantDM schedules Instagram posts and has an MCP server from Trendsetter; we found neither on LinkDM. Postkey is the third option: several accounts on one plan, a scheduler for 21 networks and an agent that builds the automations.
Facts as of November 5, 2026
Plans side by side
| Tool and plan | Monthly billing | Yearly billing | Accounts | What it limits |
|---|---|---|---|---|
| LinkDM Free | Free | Free | 1 | 1,000 DMs a month |
| LinkDM Pro | $19 a month | $182 a year | 3 | 25,000 DMs a month |
| LinkDM Platinum+ | $99 a month | $832 a year | 10 | 300,000 DMs a month |
| InstantDM Free | Free | Free | 1 | 500 DM automations a month |
| InstantDM Legend Pro | $12 a month | $9.99 a month | 1 | Up to 800 automations an hour |
| InstantDM Trendsetter | $29.99 a month | $24.99 a month | 1 | Up to 2,000 automations an hour; API and MCP |
| InstantDM Trendsetter Pro | $59.99 a month | $49.99 a month | 1 | No hourly limit; API and MCP |
| InstantDM Multi Starter | $15 a month | $160 a year | 3 | 30,000 automations per account a month |
| InstantDM Multi Pro | $99 a month | $990 a year | 10 | 300,000 automations per account a month |
LinkDM as its pricing page showed on November 5, 2026, InstantDM on November 5, 2026. List prices before tax, in US dollars.
How each one bills
LinkDM counts DMs sent. In its words, "If you reach your monthly sending limit, DMs will stop sending until the start of the next month", unless you bought DM credits: from 1,000 for $5 to 1,000,000 for $350, which "do not expire" and are shared across your accounts.
InstantDM's single-account plans cap the pace, not the month: up to 800 automations an hour on Legend Pro and 2,000 on Trendsetter; Trendsetter Pro lists no hourly limit. Its Free plan allows 500 a month, and Multi Starter and Multi Pro give each account 30,000 and 300,000 a month.
So a post that reaches thousands of new people uses up LinkDM's monthly pool, while on InstantDM it queues behind the hourly pace.
Sourceslinkdm.com/pricingLinkDM help: DM creditsLinkDM help: monthly send limitinstantdm.com/pricing
What each says about the other, checked
LinkDM's InstantDM page marks InstantDM as missing Facebook DM automation, comment auto-replies and next-post triggers. InstantDM's own pricing page lists all three on Legend Pro.
InstantDM's LinkDM page says its safety pacing is on every plan, the free one included. Its own pricing page lists DM queues and overload handling from Trendsetter, and the slowdown mode on Trendsetter Pro. The same page puts the AI agent on Legend Pro; the pricing page lists the AI agent step from Trendsetter, run on your own AI key.
Both pages are each company's claims about a rival. We checked them only against the rival's own pricing page.
SourcesLinkDM: compare to InstantDMInstantDM: vs LinkDMinstantdm.com/pricing
What it costs for your setup
The cheapest published plan that covers each number of accounts on one login, before extra usage.
| Accounts | LinkDM | InstantDM | Postkey |
|---|---|---|---|
| 1 | $19 (Pro) | $12 (Legend Pro) | $15 (Essential) |
| 3 | $19 (Pro) | $15 (Multi Starter) | $20 (Essential + 1 extra) |
| 5 | $99 (Platinum+) | $99 (Multi Pro) | $34 (Create) |
| 10 | $99 (Platinum+) | $99 (Multi Pro) | $85 (Pro) |
Allowances differ: check what each plan includes above. Postkey's price includes the scheduler and the agent connection.
Features compared
| Feature | LinkDM | InstantDM | Postkey |
|---|---|---|---|
| DM channels | Instagram and Messenger | Instagram and Messenger | Instagram, Messenger and X |
| Accounts per plan | Up to 10 | Up to 10 | Up to 15 |
| Comment to DM | Yes | Yes | Yes |
| Follow gate | Yes (On Pro) | Yes | Yes |
| Email capture | Yes (On Pro) | Yes | Yes |
| DM inbox | Not found | Yes (Not on Free) | Yes |
| AI replies | Not found | Yes | From Create |
| Schedules posts | Not found | Yes, 21 networks | |
| AI agent (MCP) | No MCP server found | MCP server; triggers and pauses automations, does not build them | Yes, builds and switches on automations |
LinkDM November 5, 2026, InstantDM November 5, 2026. "Not found" means we looked on the company's own pages and did not find it.
Where LinkDM wins
- Several accounts on one plan: 3 on Pro and 10 on Platinum+. InstantDM's single-account plans hold 1 each.
- A larger free plan: 1,000 DMs a month, against 500 automations on InstantDM Free.
- DM credits that never expire and serve every linked account.
- Rewind sends DMs to comments left on posts less than 7 days old.
Where InstantDM wins
- No monthly cap on its paid single-account plans, only an hourly pace.
- A post scheduler for Instagram posts, Reels and carousels, with the DM attached, from Legend Pro.
- AI comment replies on the free plan, and an AI agent step from Trendsetter.
- An MCP server from Trendsetter that, by InstantDM's pages, sends DMs and publishes Instagram posts.
Who should pick Postkey instead
Postkey is the most agentic DM automation tool. Start on the free plan, no card, and rebuild your automations yourself or ask your assistant to do it.
- You want ChatGPT, Claude or Grok to build and switch on your automations. We found no MCP server for LinkDM, and none of InstantDM's tools that builds automations.
- You post beyond Instagram: Postkey schedules to 21 networks and switches each post's DM keyword on with it.
- You want DM automation on Instagram, Messenger and X from one plan.
- You want flows, a DM inbox and AI replies in the same plan as your scheduler.
Questions
Is LinkDM better than InstantDM?
For several Instagram accounts on one plan and a big free allowance, LinkDM fits better. For one account with viral posts, a scheduler and AI replies, InstantDM does more.
Does InstantDM or LinkDM have an MCP server?
InstantDM does, from Trendsetter; by its own pages it sends DMs and publishes posts, and sends cost credits. We found none for LinkDM on its own pages.
What is the best alternative to LinkDM and InstantDM?
Postkey, if you want more than DMs. It does comment to DM, the follow gate and email capture, schedules the post to 21 networks from the same plan, and is the most agentic DM automation tool. It starts at $15 a month for 2 accounts, with a free plan.
