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SMTP Debug Tool vs Softaken OLM to IMAP Migration
Short answer: Pick SMTP Debug Tool if you want 3-in-1 SMTP testing and debugging; pick Softaken OLM to IMAP Migration if you want OLM-to-IMAP migration on Windows. SMTP Debug Tool is free; Softaken OLM to IMAP Migration has a free plan.
SMTP Debug ToolTest and debug your SMTP connection. Quickly and for free. 
Softaken OLM to IMAP MigrationEffective solution to migrate OLM archive files directly into any desired IMAP Accounts.Which to pick
Pick SMTP Debug Tool if you want…
- 3-in-1 SMTP testing and debugging
- SMTP connection testing
- A free tool
- Integrations with Amazon SES, SendGrid or Mailgun (on SMTP Debug Tool's list, not Softaken OLM to IMAP Migration's)
Pick Softaken OLM to IMAP Migration if you want…
- OLM-to-IMAP migration on Windows
- Integrations with Gmail, Google Workspace (G Suite) or Yahoo Mail (on Softaken OLM to IMAP Migration's list, not SMTP Debug Tool's)
Side by side
- What it is
- SMTP Debug Tool:A free web tool to test, proxy, and blackhole SMTP connections with real-time session logs.
- Softaken OLM to IMAP Migration:Softaken OLM to IMAP Migration moves Outlook for Mac .olm files directly into any IMAP email account on Windows.
- Best for
- SMTP Debug Tool:3-in-1 SMTP testing and debugging
- Softaken OLM to IMAP Migration:OLM-to-IMAP migration on Windows
- Who it’s for
- SMTP Debug Tool:Developers and engineers who need to debug email sending setups.
- Softaken OLM to IMAP Migration:Mac Outlook users who need to transfer mail to Gmail, Outlook.com, Office 365, etc., on Windows.
- Pricing
- SMTP Debug Tool:Free
- Softaken OLM to IMAP Migration:Freemium
- Starting price
- SMTP Debug Tool:Free
- Softaken OLM to IMAP Migration:—
- Free plan or trial
- SMTP Debug Tool:Free to use
- Softaken OLM to IMAP Migration:Free plan (Demo) · Free trial
- Plans
- SMTP Debug Tool:—
- Softaken OLM to IMAP Migration:Demo FREE
- Works with
- SMTP Debug Tool:Amazon SES, SendGrid, Mailgun, Sendinblue, Google SMTP, Elastic Email, SMTP2GO, UniOne
- Softaken OLM to IMAP Migration:Gmail, Google Workspace (G Suite), Yahoo Mail, AOL Mail, Outlook.com, Office 365, Zoho Mail, iCloud
SMTP Debug Tool features
- SMTP Test. Run a quick SMTP session in the browser and view the full conversation log.
- SMTP Proxy. Log an existing SMTP connection between your app and mail provider for error analysis.
- SMTP Blackhole. Create a safe test session without exposing real credentials, capturing logs only.
- Real-time logs. See live, detailed logs of every SMTP command and response.
- No login required. All core functions are accessible without registration.
- Extended parameters for logged-in users. Add subject, HTML body, and extra headers, and raise hourly limits.
Softaken OLM to IMAP Migration features
- Direct OLM → IMAP transfer. Migrate full .olm archives straight into IMAP servers without needing Outlook installed.
- Preserve metadata & attachments. Keeps subject, recipients, formatting, signatures and all attachments intact.
- Folder mapping. Upload to existing IMAP folders or create new ones, preserving original folder hierarchy.
- Scan & preview. Shows full mailbox preview and lets you select items before uploading.
- Unlimited size (full license). Full version removes any limits on OLM file size or item count.
- Multi-provider support. Works with Gmail, Yahoo, AOL, Outlook.com, Office 365, Zoho, iCloud, custom IMAP, etc.
SMTP Debug Tool vs Softaken OLM to IMAP Migration FAQ
What is the difference between SMTP Debug Tool and Softaken OLM to IMAP Migration?+
SMTP Debug Tool tests SMTP connections, not OLM conversion.
Should I use SMTP Debug Tool or Softaken OLM to IMAP Migration?+
Pick SMTP Debug Tool if you want 3-in-1 SMTP testing and debugging, SMTP connection testing or a free tool. Pick Softaken OLM to IMAP Migration if you want OLM-to-IMAP migration on Windows or integrations with Gmail, Google Workspace (G Suite) or Yahoo Mail (on Softaken OLM to IMAP Migration's list, not SMTP Debug Tool's).
Is SMTP Debug Tool or Softaken OLM to IMAP Migration free?+
SMTP Debug Tool is free. Softaken OLM to IMAP Migration has a free plan (Demo) and paid plans.
Do SMTP Debug Tool and Softaken OLM to IMAP Migration integrate with the same tools?+
Their integration lists don't overlap: SMTP Debug Tool lists Amazon SES, SendGrid, Mailgun, Sendinblue and 4 more; Softaken OLM to IMAP Migration lists Gmail, Google Workspace (G Suite), Yahoo Mail, AOL Mail and 4 more.
On DevHunt
Softaken OLM to IMAP Migration
0 upvotes · Launched on DevHunt on Jan 6, 2026
Based on each tool's website and DevHunt data. Details may change; check the official sites.