Compare/Head to head

Folderly vs GlockApps

Same facts, side by side: starting price, free tier, MCP, API and what each one is actually built for.

Starting price

Folderly

$79/mo Free tier

Folderly tests email deliverability and monitors inbox placement. Inbox Insights has a free tier with 2 tests a month, then $79/mo for 100 tests.

Where Folderly fits

  • Outbound teams whose mail is landing in spam and need placement proof
  • RevOps watching DMARC and inbox placement across many domains
  • Agencies that want a deliverability report to show clients
  • Senders who already have warmup and now need monitoring

GlockApps

$59/mo Free tier Free trial

GlockApps is a deliverability testing platform that shows where your email lands across Gmail, Outlook, Yahoo and other providers before a campaign goes out. It suits agencies and recruiters running cold email across several domains who need proof of inbox placement, not guesses. There is a free plan with 2 tests, paid plans start at $59/mo on annual billing, and a free trial is offered.

Where GlockApps fits

  • Agencies testing inbox placement before launching client campaigns
  • Recruiters rotating several cold email domains and mailboxes
  • Teams that want DMARC reports and blocklist alerts in one place
  • Senders who want Gmail Postmaster data kept longer than Google keeps it

At a glance

DetailFolderlyGlockApps
Starting price$79/mo$59/mo
Free tier✓Yes✓Yes
Free trialNot on recordYes
MCP server–No✓Yes
Public API–No✓Yes
Listed underDeliverabilityDeliverability

Where they pull apart

Folderly

Stands out: The product is placement and authentication (SPF, DKIM, DMARC, seed-list inbox tests), not a warmup bot and not a sequencer.

Watch out: Folderly does not send your campaigns. You still need Instantly, Smartlead, or Google Workspace as the actual mail server.

Not the right fit for

  • Teams that only need a $15 warmup mailbox
  • Buyers looking for a cold-email sequencer

GlockApps

Stands out: GlockApps puts seed list placement tests, DMARC reporting, blocklist monitors and a Google Postmaster dashboard in one account, where many warm-up tools only report their own network results. It also runs its own MCP server, so you can start a placement test and compare results from Claude or ChatGPT.

Watch out: Spam test credits are the real limit, so testing many mailboxes on a schedule can push you from Essential to Growth or Enterprise. GlockApps tests and monitors but does not warm up mailboxes, so you still need a separate warm-up tool.

Not the right fit for

  • Anyone who needs mailbox warm-up included
  • Senders who only need a one-off free spam check
  • Teams wanting a done-for-you deliverability service on a self-serve plan

Pros and cons

Folderly

  • Inbox placement tests rather than warmup-only
  • Free tier with 2 placement tests a month
  • Useful when the problem is DNS and reputation, not copy
  • Does not send or warm the mail for you
  • Overlap with Instantly's built-in placement features

GlockApps

  • Seed tests across many providers in one run
  • Free plan with DMARC analytics and 2 tests
  • Own MCP server and documented API
  • Spam test credits run out fast with scheduled tests
  • No mailbox warm-up
  • Published prices shown on annual billing

What each one costs

Folderly

$79/mo

Inbox Insights (placement tests before you launch) has a free tier with 2 tests a month, then $79/month for 100 tests, or $799 a year. The core Folderly deliverability product is $96 per mailbox per month on yearly billing. Pulse spam-placement alerts are free. Confirm current terms on the vendor site.

Checked 4 Nov 2026

GlockApps

$59/mo

GlockApps has a Free plan at $0 with 2 spam test credits, 10,000 DMARC messages, 5 uptime monitors and 1 IP reputation monitor. Essential costs $59/mo shown on annual billing ($708 a year) and gives 360 spam test credits, 600,000 DMARC messages, 15 uptime monitors, 10 IP reputation monitors and 3 DMARKOFF domains. Growth costs $99/mo on annual billing ($1,188 a year) with 1,080 spam test credits, 1.2 million DMARC messages and 5 Postmaster Tool users. Enterprise, aimed at agencies, costs $129/mo on annual billing ($1,548 a year) with 1,800 spam test credits, 12 million DMARC messages and 10 Postmaster Tool users. Every paid plan includes API access and unlimited DMARC domains, DMARC overage is billed per 100,000 messages, and monthly billing is also offered. The vendor offers a free trial and 2 free tests with no credit card. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Common questions

Is Folderly cheaper than GlockApps?
GlockApps starts lower, at $59/mo against $79/mo for Folderly. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Folderly or GlockApps for free?
Folderly and GlockApps carry a free tier on our listing. GlockApps offers a free trial.
Does Folderly or GlockApps have an MCP server?
GlockApps ships a first party MCP server, so an AI assistant can work the product directly.

Not the pair you wanted?

All Folderly alternatives All GlockApps alternatives Every Deliverability tool

Editorial listings, never paid rankings. Prices checked 4 Nov 2026. Confirm current terms on the vendor site. Spot an error?