No. Recognised keys and tokens are removed in your browser before the code is sent, the conversion runs once, and nothing you paste is kept or used to train a model.

Which languages and platforms does it convert?

Node.js, Python, Ruby, PHP and cURL, from Resend, SendGrid, Postmark and Mailgun. Pick Another provider for anything else, and the notes say what did not map.

How do I know the converted code is right?

Every Nextmail call in it is checked against the SDK reference, anything left of the old provider is flagged, and every change is listed. Read it and send yourself a test before you ship.

What if my code uses something Nextmail does not have?

It is left out of the converted code and named in the notes, so nothing disappears without a word.

Yes. Anybody can convert a few files a day, and no account is needed.

Migrate

Your email code,
rewritten for Nextmail.

Paste the code that sends your mail today. It comes back in the same language on the Nextmail SDK, with every change listed and every call checked against the reference.

Convert your codeOpen mailGet Started

Converter

Paste it in,
read what changed.

Pick where the code comes from and its language. Recognised keys are removed in your browser, and nothing you paste is kept.

A guide for
every platform you leave.

What maps to what when you move your code, and every step when you move a list or a mailbox.

Sending and marketing

Resend
Keep your code on the compatible API, or convert it.
SendGrid
Personalizations, dynamic templates and event webhooks.
Postmark
Server tokens, message streams and templates.
Mailgun
Domains, o: options and v: variables.
Mailchimp
Lists, subscribers and unsubscribes, with one key.

Mailboxes

Gmail
Mail, labels and threads, from Google Takeout.
Outlook
Mail, contacts and calendars, with a Microsoft sign-in.
Google Workspace
Your team's mailboxes and your domain, labels included.
iCloud Mail
Mail, contacts and calendars, with an app-specific password.
Yahoo Mail
Mail, contacts and calendars, with an app password.
Proton Mail
Proton's own export, with folders and labels.
Zoho Mail
Every folder, over IMAP with an app password.
AOL Mail
Your folders and read state, with an app password.
Fastmail
One export per folder, threads intact.
HEY
Every message and attachment, from one export.

Four steps
from paste to production.

01
Paste one file
The code that sends your mail, in Node.js, Python, Ruby, PHP or cURL. Recognised keys are removed in your browser first.
02
Read the rewrite
The same program on Nextmail, with each change, each manual step and each option left out listed beside it.
03
Check every call
Every Nextmail call is matched against the SDK reference, and anything left of the old provider is flagged.
04
Ship it
Add your domain, create an API key, set NEXTMAIL_API_KEY and deploy.

Questions about
moving your code.

Converted?
Create the key it reads.

A workspace takes a minute. Add your domain, create an API key and set NEXTMAIL_API_KEY.

Open mailGet StartedRead the SDK docs

Your email code,rewritten for Nextmail.

Paste it in,read what changed.

A guide forevery platform you leave.

Sending and marketing

Mailboxes

Four stepsfrom paste to production.

Questions aboutmoving your code.

Converted?Create the key it reads.

Your inbox,on your own terms.