Real feedback from customers who verify email lists with us. Praise and criticism, published as-is.
Leave a Review8,626+ reviews collected since 2012. Here are the latest.
i use the free single email checker almost every day to spot check addresses before adding them to my crm. 10 free checks a day is plenty for what i need. when i have a bigger list i just buy credits
Used it to clean up our internal contact database after a company merger. Found 40+ addresses that were completely dead or belonged to employees who left years ago. Saved us from bouncing a bunch of onboarding emails to the combined team. Not the typical use case probably but it worked perfectly for it.
We use some threads for real-time form validation and others for nightly list cleaning. The flexibility of the unlimited API is unmatched by any competitor.
Used it to clean my shopify customer email list before a sale campaign. Worked good. I emailed support to ask about the diffrence between "risky" and "unknown" results and they got back same day which was nice. Only 4 stars because I wish there was a shopify plugin to do it automaticaly.
no frills, just works. exactly what i was looking for
The thread-based model is genius. We run 20 threads 24/7 and verify our entire 15M contact database every month for a fraction of what we used to pay.
We run an agency and verify every client list before we touch it. Bulk Email Checker is what we use. The pricing makes sense for us because we dont verify every month, just when a new client comes on or before big sends.
We switched from ZeroBounce to the unlimited API and our verification costs dropped from $8,000/mo to $2,300/mo. Same accuracy, fraction of the cost.
been using this on and off for a couple years. always works, price hasnt gone up, credits are still there when I come back months later. hard to ask for more than that
The disposable email detection alone saved us thousands in wasted marketing spend. The API catches throwaway addresses that other services miss.
Ran our newsletter list through it (about 12k contacts). It flagged around 900 as invalid and another 300 or so as risky. Our bounce rate on the next send dropped from like 8% to under 1% so it definately works. Taking off one star bc the UI is a little plain looking but honestly who cares, it does the job.
We tested 5 different email verification APIs. Bulk Email Checker had the best accuracy, fastest response times, and the pricing is unbeatable.
love it. been using this for about a year now. never had an issue
We tested four validators on the same 250k sample. Bulk Email Checker was the only one that correctly flagged the reserved-TLD and disposable addresses the others missed.
My client gave me a list of 8,000 emails and asked me to clean it before thier mailchimp campaign. I literally just uploaded the csv and downloaded the clean file. Super easy even for someone whos not technical.
The typo correction response field alone pays for itself. We auto-suggest the corrected domain in the signup flow and recover around four percent of otherwise-bounced users.
works great. fast and cheap. used it for a 50k list and hit 99.1% deliverability on the next send
Our previous provider billed credits for validation, so we built a whole pre-upload cleanup step to keep the bill down. Bulk Verify does that layer for free as part of the run. That manual work just disappeared from our pipeline.
We use this to clean our outreach lists before loading them into Instantly. Cuts our bounce rate way down. Wish there was a direct integration but the csv export works fine for now.
The bulk verify tool handles my large CSV files without any issues. Very impressed with the speed and thoroughness of the checks.
Works well for most of my lists. Caught a bunch of bad emails before I sent a campaign. Only reason its not 5 stars is the catch all results - hard to know what to do with those.
Integrated the API into our signup form in less than an hour. It instantly stopped the spam bots and fake signups we were dealing with daily.
Best accuracy I've found after testing 5 different vendors. The real-time API is blazing fast and the catch-all detection is perfect.
I was paying NeverBounce $40/mo and barely using it. This is pay as you go and the credits dont expire which is exactly what I needed. Would definately reccomend.
does what it says on the tin. uploaded my list, got results back in like 20 minutes. no complaints
Pulled from thousands of reviews. The highlights and the hang-ups.
Across thousands of reviews, these are the ways customers put Bulk Email Checker to work.
Cleaning lists before every campaign to keep bounce rates below 2% and protect their sender reputation from blocklist damage.
Managing multiple client lists under one team account with shared credits, role-based permissions, and per-member usage tracking.
Using the real-time API to validate emails at signup. Blocking disposables, catching typos, and preventing fake accounts from entering their system.
Validating customer emails at checkout to reduce failed order confirmations and fight fraud. Flagging disposable and temporary addresses before purchases complete.
Verifying prospect lists before cold email campaigns. Removing invalid addresses that would spike bounce rates and damage their sending domain on the first touch.
Blocking fake signups, bot registrations, and promo abuse. Using disposable email detection to identify throwaway addresses before they exploit free trials or referral programs.
Verifying lead quality before delivering to clients or feeding into nurture sequences. Removing invalid and role-based addresses so pipelines start clean.
Integrating the REST API into signup forms, checkout flows, and contact pages. Using the documentation, code samples, and 10 free daily checks to build and test.
Starting with 10 free verifications daily, no account required. Grabbing small credit packs when they need bulk cleaning, with no monthly commitment and credits that never expire.
Verifying candidate contact information before outreach. Reducing bounced recruiting emails and making sure offer letters and follow-ups reach real inboxes.
Running regular verification to combat the 2-3% monthly subscriber decay. Keeping open rates honest and preventing newsletters from landing in spam folders.
Processing millions of records for CRM hygiene, data warehouse cleanup, and compliance audits. Using unlimited API plans for continuous verification at scale.
You should ask this about every service that handles your email list.
All data transmitted over HTTPS with TLS 1.2+. Your email lists are encrypted from upload to download.
Uploaded lists are permanently deleted under our 90-day data retention policy if the customer hasn't already deleted them. Your data is used solely for verification and never accessed, shared, or repurposed for any other reason.
Over a decade of continuous operation. 12.1B+ emails verified. That track record does not happen by accident.
Pay-as-you-go credit packs, no expiration, no monthly minimums, no auto-renewal surprises.
Used by email marketers, SaaS companies, and agencies across 100+ countries. Solo senders to enterprise.
Our privacy policy and terms of service are public and written in plain language.
Transparency about how reviews get from customer to page.
Reviews submitted through our Feedback Hub. Name, email, rating, and written review.
Every submission is reviewed by a person before going live. We check for spam and fabricated content. We do not filter legitimate negative reviews.
Reviews only appear here if the submitter opted into public display. We never publish email addresses. Only the reviewer's first name and last initial are displayed.
Start with 10 free email verifications daily. No account required. Or grab a credit pack and verify your entire list in minutes.