Paste a messy block of email addresses in any format, and get back a clean, de-duplicated, properly separated string ready to paste into a To, CC or BCC field — along with a check against common recipient-per-message limits across major providers.
Different email clients and CRM import fields expect addresses separated differently — some To/CC/BCC fields want commas, some (particularly certain older Outlook configurations and some CSV imports) expect semicolons, and bulk-upload tools frequently want one address per line instead. Pasting a list copied from a spreadsheet or another system often carries whatever separator that source used, which doesn't always match what your destination expects, causing addresses to get mashed together or silently dropped.
This tool normalizes any mix of newlines, commas and semicolons in your input, removes duplicate addresses (case-insensitively), and outputs the result in whichever separator format you choose — ready to paste directly where you need it.
Alongside formatting, the tool checks your final recipient count against commonly cited per-message limits for several major providers — useful context before you paste a large list into a single BCC field and discover partway through sending that it silently failed or got rejected for exceeding a cap you didn't know about. Combined with the formatting step, this gives you both a clean, ready-to-paste string and an early warning if your list is simply too large for the field you're about to paste it into, before you waste time troubleshooting a failed send. It's a small step, but one that saves the more frustrating alternative of a bounced or partially delivered send discovered only after the fact.
They reflect commonly published limits at the time of writing, but providers do update these over time — for anything important, it's worth double-checking your specific account type's current limit in that provider's own help documentation.
It focuses on formatting and de-duplication rather than validation. Run your list through the Email Validator or Bulk Email List Checker first if you also need to confirm each address is well-formed.
This tool cleans and reformats a list into one ready-to-paste string within a single field. The Email List Splitter instead divides a list into multiple separate batches when your list is too large for one message or one day's sending limit.
Duplicate addresses in a large BCC list waste space against a provider's recipient cap and can occasionally cause a message to be flagged or rejected outright by strict mail servers that don't expect the same address to appear twice.
Yes — it works the same way regardless of list size, from a handful of addresses up to a large bulk list, and is equally useful for tidying up a short list before an important email. Even a five-person To line benefits from the same duplicate-check and clean formatting pass.