Question 1

How accurate is the email validation?

Accepted Answer

Our validation achieves 99.2% accuracy by checking RFC format compliance, MX records, SMTP verification, and cross-referencing against our database of over 100,000 disposable email domains.

Question 2

What happens if I reach my monthly limit?

Accepted Answer

API requests beyond your quota will return an HTTP 402 error with a clear message. You won't be charged extra — simply upgrade your plan to continue validating. We'll notify you when you're approaching your limit.

Question 3

Can I downgrade or cancel anytime?

Accepted Answer

Yes! You can change your plan or cancel at any time from your dashboard. Downgrades take effect at the end of your billing cycle, and we offer prorated refunds for annual plans.

Question 4

Do you offer a free trial of Pro features?

Accepted Answer

Our Free tier lets you test everything except bulk validation. If you need to evaluate bulk features, contact us for a 7-day Pro trial.

Question 5

Is there an API rate limit?

Accepted Answer

Free: 10/sec. Growth: 75/sec. Pro: 150/sec. Business: 300/sec. Enterprise: 500/sec.

Question 6

Can I just use validation without sending?

Accepted Answer

Yes. The Free plan is validation-only. Sending, tracking, and storefront measurement unlock on Growth (EUR 19/month). You can use MailOdds purely as a validation API if that is all you need.

Question 7

How is this different from ZeroBounce or Mailchimp?

Accepted Answer

ZeroBounce validates but does not send. Mailchimp sends but does not validate or track storefront behavior. MailOdds does all three in one platform: validate your list, send campaigns and transactional emails, and measure everything from inbox to storefront.

Question 8

What does the web pixel track on my store?

Accepted Answer

A lightweight 2KB script tracks page visits, product views, cart additions, wishlist saves, and purchases. It ties this activity back to the email that drove the click, so you see exactly which campaigns generate revenue. No cross-domain tracking, no cookies.

Question 9

What is the difference between email validation and email verification?

Accepted Answer

Email validation and email verification are often used interchangeably, but technically they differ. Validation is the broader process including syntax checks, DNS lookups, and disposable detection. Verification specifically refers to SMTP-level confirmation that the mailbox exists and accepts mail. MailOdds performs both: full validation checks plus deep SMTP verification, achieving 99.2% accuracy. According to Validity research, combining both approaches reduces false positives by over 95% compared to syntax-only checks.

Question 10

Can I validate emails without sending a test email?

Accepted Answer

Yes. MailOdds verifies email addresses through SMTP handshake without sending any actual email. The API connects to the recipient's mail server and checks whether the mailbox accepts mail without delivering anything. This process is non-intrusive and compliant with RFC 5321. The entire check completes in under 300ms on average.

Question 11

Does email validation work with catch-all domains?

Accepted Answer

Catch-all (accept-all) domains are servers configured to accept mail for any address, making individual mailbox verification impossible. MailOdds detects catch-all domains and returns a 'catch_all' status so you can handle them separately. According to industry data, approximately 15 to 20% of business domains use catch-all configurations. Our API returns a 'flag' action for catch-all addresses, letting you decide whether to accept or review them.

Question 12

Is MailOdds an email service provider (ESP)?

Accepted Answer

Yes. MailOdds is a full-stack email platform. You can send transactional emails, run campaigns with A/B testing, track opens/clicks/conversions, manage sender health, and monitor DMARC compliance. The platform also validates every recipient before delivery, eliminating bounces at source. Growth plans include 10,000+ sends/month.

Question 13

Can I replace SendGrid or Postmark with MailOdds?

Accepted Answer

Yes. MailOdds provides DKIM dual signing (Ed25519 + RSA), domain warmup, ISP-aware rate limiting, bounce and complaint processing, open and click tracking with bot filtering, and conditional webhooks. The key difference: MailOdds validates every recipient before delivery, so your bounce rate starts at zero.

Question 14

Does MailOdds support email campaigns with analytics?

Accepted Answer

Yes. Create campaigns with up to 5 A/B variants, schedule sends, and track delivery, opens, clicks, and conversions. Analytics include bot-filtered engagement, Apple Mail Privacy Protection detection, Gmail tab detection, and storefront attribution via web pixel.

Frequently Asked Questions