Email Marketing Features
Built for Deliverability.

Email sharding is the practice of splitting one campaign's volume across several sending accounts and domains rather than sending everything from a single mailbox. Messages are dispatched in a round-robin rotation, so no individual account carries enough volume in a short window to look like a bulk sender to a spam filter.

Yes. When you add a domain, the platform performs live DNS TXT lookups and reports which of SPF, DKIM and DMARC are present, valid, or misconfigured, so you can fix authentication problems before they cost you a campaign.

Yes, in two ways. Mail merge substitutes any column from your uploaded CSV into the subject and body. Spintax lets you write several phrasings of the same sentence and have a different one selected per recipient, so no two messages in a campaign are byte-identical.

Opens are recorded through a 1×1 tracking pixel and clicks through wrapped redirect links. Both are resolved to device type and approximate geographic location, and surface in the analytics dashboard in real time over a WebSocket connection.

If a provider returns an SMTP 421 or 429 error, that account is put into a 60-minute cool-down and skipped in the rotation, while the remaining accounts continue sending. It returns to the pool automatically when the cool-down expires. If every account goes offline, the campaign pauses and you are alerted rather than continuing to fail silently.

Yes. Uploaded CSV files are parsed and validated for syntax errors, duplicates and malformed addresses, with MX record lookups to confirm the receiving domain can actually accept mail. Invalid rows are reported before the campaign is queued.