Clean Lists. Fewer Bounces. Better Inbox Placement.

We catch and correct invalid email formats, typos, and structural errors — so you never lose a good lead over a misplaced dot or missing “@”.

RelayDocs confirms that the recipient’s domain is properly configured to receive email. No valid mail server? That address is flagged.

We scan for domains known for abuse, spam, or fraud. This helps protect your brand from toxic senders that could harm your deliverability.

Some domains accept any email address format (like anything@company.com) but silently drop the messages. We identify these tricky cases so you can choose how to handle them.

Our engine cross-checks against known spam trap sources — helping you avoid the silent killers of sender reputation and inbox placement.

Temporary and self-destructing emails (like @mailinator.com) are removed from your list automatically to avoid fake signups or wasted sends.

We detect Gmail, Yahoo, Outlook, and other consumer-grade domains so you can segment, prioritize, or exclude them based on your targeting needs.

Without sending any mail, we ping the server to verify if the mailbox is active and ready to receive — minimizing soft bounces before they happen.

Whenever possible, we enrich your list with inferred gender and first names based on address patterns — unlocking new personalization opportunities.

RelayDocs retries validations that are temporarily blocked due to greylisting — ensuring you don’t lose out on valid contacts during the first pass.