FAQ
Answers, in plain language.
For recipients
Why did I get an email from this domain?
Because a website or app you use asked Mailssender to send it. We are the sending infrastructure behind other companies' email — password resets, receipts, verifications, and notifications travel through this domain on their behalf.
The message is legitimate and comes from the service you signed up with, not from us. Mailssender does not write the content, does not sell or share address lists, and has no account for you to log into. If you want a message to stop, use the unsubscribe or account settings inside the service that sent it. If something looks wrong, you can always report it to us
More questions
For developers and everyone else.
No. Mailssender is backend infrastructure, not a consumer product. There is no public sign-up, no login, and no user dashboard on this domain. If you are a developer, you integrate through the API or SMTP relay; if you are a recipient, there is nothing here you need to create.
Two ways, both standard. Point your existing SMTP client at our relay and keep your current code, or call the send API directly. Either way you hand off a recipient, subject, and body, and authenticated delivery is handled for you.
Every message is sent with SPF, DKIM, and DMARC configured on a dedicated sending domain, and delivered over TLS wherever the receiving server supports it. Together these let receivers verify that mail claiming to be from your domain genuinely originated with an authorized sender.
Deliverability is ongoing work: authenticated sending, dedicated domains, careful volume warm-up, automatic bounce handling and suppression, and continuous reputation monitoring. When a problem address or a reputation dip appears, it is caught and handled before it drags down your inbox placement.
Message data is used to deliver mail and to process delivery results — nothing more. Address lists are never sold or shared, and Mailssender does not send marketing on its own behalf. Privacy and transparency are core operating values, not afterthoughts.
Use the unsubscribe link or the account settings inside the service that sent the message — they control what gets sent, not us. If a message looks fraudulent or you believe our infrastructure is being misused, contact our abuse & deliverability channel and we will investigate.