SendGrid Email Validation alternatives
You're likely here because list cleaning sits inside your SendGrid account, and bulk results land in an inbox as a CSV. Here's what verification costs as its own step, and what to check before you move it out of your ESP.
| Service | 100,000 addresses | Credits expire? | Bills unknowns? |
|---|---|---|---|
| ZapBounce | $139 | Never | No |
| ZeroBounce | Subscription only | Credits roll over while the subscription is active | Not stated |
| Bouncer | $400, and 1,000,000 for $2,000 | Never | No |
| Emailable | Custom | Never | No |
| Clearout | Not listed | Never | No |
| Kickbox | $500 ($1,100 for 250,000; $2,999 for a million) | Credits expire one year from purchase | No |
| SendGrid Email Validation | Premier includes 5,000; custom pricing | Not stated on its pricing page | Not stated |
Read from each vendor's own pricing page in September 2026. Prices move, so confirm theirs before you buy. Ours are published in full on the pricing page.
Why people look elsewhere
SendGrid's validation lives inside the account you send with, so list cleaning follows your ESP. Bulk results arrive as a CSV sent to the email address on the SendGrid account. If you clean lists for more than one sending tool, or before a list reaches any ESP, you want the check to stand on its own. ZapBounce is that step, with results waiting in your dashboard and over the API.
SendGrid counts validations inside its sending plans. Essentials includes none, Pro includes 2,500 from $89.95 a month, and Premier includes 5,000 at a custom price, with the overage rate left off the page (Twilio pricing, read September 2026). ZapBounce prints one table for verification alone: $5 for 1,000, $25 for 10,000 and $139 for 100,000. Unknown rows and duplicates cost nothing, and credits never expire.
What ZapBounce changes for a SendGrid Email Validation user
The differences that show up on the first invoice and the first results file.
The short version
- Verification sold on its own, from $5 for 1,000 checks, in front of whichever ESP sends your mail.
- Results come back in your dashboard and through the API, with your original columns plus the result, the reason and a billed flag.
- Unknown results and duplicate rows are never charged, and the pricing page says so.
- Credits never expire, and 100 free credits arrive every month with no card.
- Our own SMTP check on port 25, closed before DATA, so no message reaches the addresses you check.
Before you move off SendGrid Email Validation
Run the same sample through two vendors and the interesting number is not how many came back valid.
Find where your bulk results go today
SendGrid mails bulk results to the address on the account. Decide who on your team should see them, and whether a dashboard download or an API call suits that person better.
Split signup checks from list cleaning
A form check stops a bad address before it costs a send. A bulk run cleans what's already on the list. ZapBounce's API handles the first, and bulk upload handles the second.
Decide what happens to catch-all rows
A catch-all row is a domain-level answer. Choose now whether those rows go into your SendGrid send, a slower campaign or the bin.
Price a year of list cleaning
Add up the addresses you cleaned over the last twelve months and price them at ZapBounce's table. Credits never expire, so a slow quarter costs you nothing.
What switching actually involves
Your SendGrid sending stays exactly as it is. Upload an old list to ZapBounce as a CSV, or call POST /v1/verify from your signup form for new addresses. Each row comes back valid, invalid, catch_all or unknown with a reason, and only the rows you keep go on to SendGrid.
What stays true whichever verifier replaces SendGrid Email Validation
Questions about moving off SendGrid Email Validation
What does email verification cost outside SendGrid?
ZapBounce lists $5 for 1,000, $25 for 10,000 and $139 for 100,000, paid once with no plan. Credits never expire, and unknowns and duplicates are never billed.
Will moving verification out of SendGrid change how I send?
Your sending stays in SendGrid. ZapBounce only decides which addresses reach it, through a CSV upload or an API call before import. Setup takes one API key and one request per address.
Why do people leave SendGrid Email Validation?
SendGrid's validation lives inside the account you send with, so list cleaning follows your ESP. Bulk results arrive as a CSV sent to the email address on the SendGrid account. If you clean lists for more than one sending tool, or before a list reaches any ESP, you want the check to stand on its own. ZapBounce is that step, with results waiting in your dashboard and over the API.
How hard is it to switch verifiers?
For bulk cleaning, no harder than uploading the file somewhere else. For real-time checks on a signup form it is an API swap, which is an afternoon.
Move list cleaning in front of SendGrid and price your next import at $139 for 100,000, with credits that never expire.
Put us next to SendGrid Email Validation on your own list
100 free checks a month, no card.