Articles on: Digital Delivery

Connect your email using SMTP with Resend

Resend requires an MX record to be added to your DNS. You will need to read their guide to ensure it won't interfere with your other email providers. If you are concerned about this, please use the SendGrid or Postmark SMTP methods which do not require MX records. Read their guide - Will Resend's MX record cause conflict with my email settings?


About Resend SMTP


  • Resend is very fast and easy to set up, but it does require adding an MX record to your domain DNS. If you already have an email platform configured on your domain, read their guide to check to see if it will cause conflict. If so, use SendGrid or Postmark SMTP.
  • Speed of setup: 5/5 Fast
  • Ease of setup: 4/5 Decent
  • Resend does not have a maximum usage limit on how many emails are sent via SMTP. You can send as much as your plan allows.
  • Resend's free plan allows up to 100 emails per day for free. Maximum of 3000 per month for free. Resend's pricing
  • Resend's first pricing plan starts at 50,000 emails per month for $20/m.


Resend app SMTP details


Sender: Add your email address

Username: resend

Password: Use your API key from Resend

Host server: smtp.resend.com

Port: 587

Encryption: TLS


Resend's SMTP details


How to get an API key in Resend


In short terms, all you need to do is ensure you have your domain connected to Resend, and then create an API key. Then we enter those details into Fileflare, and that's all.


1. Sign up to Resend if you haven't yet


2. Connect your domain name


  1. Go to "Domains"
  2. Click the "Add domain" button


When adding and verifying a whole domain, this means you can use any email address on the domain. For example - type-anything-here@example.com


3. Get API Key


  1. Go to "API Keys"
  2. Click the "Create API Key" button
  3. Create your API key


Add SMTP details to Fileflare


  1. Copy the API key from Resend
  2. Go to Fileflare's SMTP page
  3. Paste the API key into the "Password" box
  4. Enter the rest of the details as shown below and click "Save"


Sender: Add your email address

Username: resend

Password: Use your API key from Resend

Host server: smtp.resend.com

Port: 587

Encryption: TLS


  1. Now, you will receive an email at your store's email address. If you received the email, then it worked. If you didn't, then it didn't work. Please click the verify button in the email to confirm.


Updated on: 28/03/2025

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