If your account does not have an active custom sending domain, Mailcamp can use a default sender address based on your From name and @mailcamp.io. This lets you keep setting up lists and campaigns, but it has limitations compared with sending from your own authenticated domain.
For the best deliverability and brand recognition, use a domain that you own and authenticate it in Sending domains.
A free/default domain is used when you do not have an active verified sending domain.
Mailcamp may generate a sender address using your From name and @mailcamp.io.
This fallback can help you start sending, but it is not the same as using your own business domain.
Some plans may require an upgrade before you can add and verify custom sending domains.
Lower brand recognition: recipients may not immediately recognize the sender address if it does not use your own domain.
Less control over authentication: you cannot manage DNS records such as DKIM, SPF, and DMARC for a domain you do not own.
Limited sender identity: your campaigns may not fully match your website, company, or organization domain.
Deliverability can be less predictable: authenticated custom domains usually give receiving servers clearer signals about who is sending the email.
Campaign setup may be restricted: Mailcamp may prevent sender addresses from unverified domains or fall back to a default sender address.
Use your own domain when you send marketing campaigns for a business, product, community, or organization.
Use your own domain when you want the From address to match your website domain.
Use your own domain when you want better control over sender reputation and authentication records.
Use your own domain before sending regular campaigns to a larger audience.
In Mailcamp, go to Sending domains.
Add the domain you want to use for sending.
Copy the DNS records generated by Mailcamp.
Add the records in your DNS provider.
Return to Mailcamp and click Verify Now.
After the domain is verified, use an email address from that domain as your sender address.
Check your current plan to see whether custom sending domains are included.
If Mailcamp shows an upgrade message, upgrade your plan to unlock custom sending domains.
Until then, Mailcamp may use the default @mailcamp.io sender address based on your From name.
Avoid using sender addresses from domains you do not control or cannot authenticate.
Use a domain that matches your website or brand.
Authenticate the domain before sending important campaigns.
Keep your From name consistent so subscribers recognize your emails.
Make sure replies go to an inbox that your team monitors.
Do not switch sender domains too often, because consistent sending identity helps build trust.
You cannot add a custom domain: check whether your plan includes custom sending domains.
Your sender address keeps changing to @mailcamp.io: confirm that your custom domain is active and verified.
Your domain is still pending: review the DNS records and click Verify Now again after DNS propagation.
Your sender email is rejected: make sure the email address uses the same domain that was verified in Sending domains.