Quick Mode or Power Mode for the API? Learn the difference, what each one checks, expected speed, and which mode to use for signups, cold email and bulk list cleaning. In Reoon, there are two verification modes designed for two different jobs:
- Quick Mode = fast, real-time checks (built for speed)
- Power Mode = deep verification (built for accuracy and detailed results)
This article will help you pick the right mode confidently, so you don’t accidentally use a “speed mode” when you need deep results (or slow down your signup form when you don’t need to).
The Quick Answer
The Quick Mode basically verifies the domain part and ensures it is from a good and active domain and not a temporary one. Using this mode, you can detect dead websites, temporary emails and a few other things, but individual inbox status cannot be checked. For example, gmail.com is a good domain. So the quick mode will return valid for all emails from Gmail that match the quick criteria. To check individual inboxes, please use the power mode. With power mode, you will be able to verify both the domain and the individual inbox status.
If we need to verify the individual inbox status, our server needs to ping the server of that email address and has to wait for their response. As that response time is not in our hands, the verification time can be higher in power mode. Here, the quick mode comes (with some trade-offs). Many people do not need to check the individual inbox during the registration on their website/app. They just want to block temporary emails and dead/unavailable domains to prevent the spammers. The quick mode can do that in 0.5 seconds.
- Use Quick Mode when you need an answer within ~0.5 seconds (example: website signups, lead forms, real-time validation).
- Use Power Mode when you need deep accuracy and detailed statuses (example: bulk list cleaning, cold email, CRM imports).
- Dashboard verification (single or bulk) always uses Power Mode internally.
Simple rule: If a human is waiting on the screen, use Quick Mode. If your sender reputation is on the line, use Power Mode.
What Quick Mode checks (and what it does NOT)
Quick Mode is designed for real-time validation. It’s optimized to return results within about 0.5 seconds.
Quick Mode checks:
- Email syntax (format correctness)
- Disposable/temporary email detection
- MX validation (mail server records)
- Domain acceptance (whether the domain is set up to receive mail)
- Expired/invalid domains
- Role accounts (like support@, info@, sales@)
Quick Mode does NOT verify individual inbox status.
That means Quick Mode is fantastic for stopping obvious bad emails at the door (typos, disposable emails, invalid domains)… but it’s not meant to be your “final decision” mode before sending a campaign to thousands of contacts.
What Power Mode checks (and why it can take longer)
Power Mode performs deep verification similar to what you get when verifying emails through the Reoon dashboard (single or bulk/file verification).
Power Mode is designed to provide the most complete result set, including deeper mailbox-level signals where possible.
In Power Mode, you can see detailed outcomes and attributes such as:
- Status categories like Safe, Role, Catch-All, Disposable, Invalid, Inbox Full, Disabled, Spamtrap, and Unknown
- An AI-powered overall score (0–100) that helps you decide how strict to be
- SMTP/MX-related checks and other deeper signals are used during verification
Speed expectation: Power Mode can take a few seconds to over a minute depending on the email provider and server behavior (the server of the email you are verifying). On average, about 90% of emails complete in ~3 seconds.
Why the wait? Some mail servers respond slowly, are busy, or are protected by strict firewall policies. Deep verification has to “work with reality,” and reality can be slow.
Quick Mode vs Power Mode: side-by-side comparison
| Topic | Quick Mode | Power Mode |
|---|---|---|
| Best for | Signups, forms, real-time quick checks | Bulk cleaning, cold email, campaign preparation |
| Typical speed | ~0.5 seconds | Seconds to 1+ minute (avg ~3s for 90%) |
| Individual inbox status | Not checked | Checked where possible |
| Depth of results | Lightweight (great for filtering obvious bad inputs) | Deep (better for sending decisions + segmentation) |
| Where you’ll use it in Reoon | API (mode=quick) | Dashboard verification + API (mode=power) |
Which mode should you use? (real-world examples)
Use Quick Mode when…
- You’re validating a signup or lead form and you want instant feedback (nobody wants to wait 10–30 seconds to create an account).
- You want to block disposable emails to reduce fake registrations and junk leads.
- You’re catching domain typos early (so you don’t lose real customers due to mistakes like a wrong domain).
- You’re building a smooth UX and need the check to feel invisible.
Pro move: Use Quick Mode at signup, then (optionally) re-check important users/leads later in Power Mode in the background of your workflow.
Use Power Mode when…
- You’re verifying a bulk list before a campaign or cold outreach.
- Bounce rate matters (it always does, but especially for cold email and newer domains).
- You need segmentation (Safe/Role vs Catch-All vs Risky vs Invalid vs Unknown).
- You want full insights like detailed status categories and the overall score.
Short version: If you’re about to email a list, Power Mode is usually the correct choice.
Why results can differ between Quick and Power Mode
People sometimes expect both modes to behave the same way. But they’re solving different problems.
Here’s why you may see differences:
- Quick Mode doesn’t check individual inbox status, so it may not surface deeper mailbox-level findings that Power Mode can.
- Mail servers behave differently over time—they can be busy now and responsive later.
- Some providers intentionally limit what they reveal to prevent abuse. Deep checks can be slower or less certain.
This is also why Reoon includes Unknown as a possible status in deep verification: sometimes the server is configured to receive mail, but verification can’t reliably confirm the exact status due to timeouts, firewalls, or misconfiguration.
How to use Quick Mode vs Power Mode in Reoon (practical steps)
Option 1: Use the Reoon dashboard (Power Mode internally)
If you want deep verification without coding, use the dashboard:
- Bulk verification page: https://emailverifier.reoon.com/bulk-verification/
- Results and downloads: https://emailverifier.reoon.com/results/
Dashboard verification (single or bulk/file) uses Power-mode level checks internally, and it appends detailed verification columns to your uploaded CSV.
Option 2: Use the API (choose mode per request)
You will also find the full API documentation in here: Reoon Email Verifier API Documentation
You can use the quick verification mode or the power verification mode, depending on your requirements (more explanation is below).
Option 3: Bulk API for large lists (Power Mode)
If you want to verify large lists at high speed programmatically, use the Bulk Email Verification API endpoint. It’s designed for large submissions and verifies emails using Power-mode level checks for maximum accuracy.
(Bonus: It also removes duplicate emails before processing, and bulk submissions create tasks you can track in the dashboard.)
Best-practice rules (to avoid the most common mistakes)
- Don’t use Quick Mode for “final sending decisions.” It’s great for filtering obvious issues fast, but it’s not intended to replace deep verification.
- For bulk list cleaning, use the dashboard (Power Mode internally) or the Bulk API.
- Keep “Unknown” separate. Unknown doesn’t mean bad—it means “not confirmed.” Re-verify Unknown emails after 15–30 minutes.
- Verify a list all at once. Splitting verification across multiple days increases risk because email statuses can change within a day.
- Treat catch-all domains carefully. A catch-all server can accept mail for any address, even if a specific mailbox doesn’t exist. That’s why segmentation matters. (If you want a deeper explanation, you can link to: Catch-All Email Address and Safety.)
Want the easiest path?
If you’re new to Reoon and you just want the simplest “do the right thing” workflow:
- Bulk list you plan to email? Use the dashboard bulk verification (Power Mode internally), then download Safe Only or Safe + Role first.
- Website signup form? Use the API in Quick Mode for instant validation, then optionally re-check later with Power Mode for important accounts.
Free registration (no card required): Create your Reoon Email Verifier account here
FAQ
Does the Reoon dashboard use Quick Mode or Power Mode?
Dashboard verification (single and bulk/file) uses Power-mode level checks internally.
Is Quick Mode “less accurate”?
Quick Mode is accurate for the checks it performs, but it’s intentionally not as deep. It does not verify individual inbox status, so it shouldn’t be used as a complete replacement for deep verification when you’re preparing to send campaigns.
Why did Quick Mode look okay, but Power Mode showed a risky/invalid result?
Power Mode performs deeper checks (including inbox-level signals where possible). Quick Mode is designed for speed and doesn’t do inbox status verification, so it can’t surface every deep result.
Which mode should I use for cold email outreach?
Power Mode is recommended because cold email is less forgiving when it comes to bounces and reputation. Use Quick Mode only when you need real-time gating (like signup validation).
Do “Unknown” results cost credits?
No. If an email returns an Unknown status, the credit is automatically refunded. You can try re-verifying Unknown emails after 15–30 minutes.
Can either mode guarantee zero bounces?
No tool can guarantee zero bounces. Some bounces happen due to temporary server issues, rate limits, sending configuration problems (SPF/DKIM/DMARC/rDNS/HELO), or content/spam-filter triggers. Verification is best viewed as strong risk reduction—not a perfect guarantee.
